Rewrite the OSC color table functions

microsoft/vcpkg-tool#1474 now validates that the target triplet is
valid. Unfortunately, `ARM64` is not valid... despite VS defaulting to
it.

VS 17.12 moved to the newer version of the vcpkg tool.

Given that we still want to build on VS 17.12, this commit adds a local
workaround.

See DD-2302065 for the internal tracking bug.
 
See microsoft/vcpkg#42182 for the upstream fix.

.github/ISSUE_TEMPLATE/Bug_Report.yml

@@ -1,6 +1,7 @@
 name: "Bug report 🐛"
 description: Report errors or unexpected behavior
 labels: [Issue-Bug, Needs-Triage]
+type: Bug
 body:
 - type: markdown
   attributes:
@@ -12,7 +13,7 @@ body:
 - type: input
   attributes:
     label: Windows Terminal version
-    placeholder: "1.7.3651.0"
+    placeholder: "1.21.2701.0"
     description: |
       You can copy the version number from the About dialog. Open the About dialog by opening the menu with the "V" button (to the right of the "+" button that opens a new tab) and choosing About from the end of the list.
   validations:
@@ -21,7 +22,7 @@ body:
 - type: input
   attributes:
     label: Windows build number
-    placeholder: "10.0.19042.0"
+    placeholder: "10.0.22621.0"
     description: |
       Please run `ver` or `[Environment]::OSVersion`.
   validations:
@@ -32,9 +33,9 @@ body:
     label: Other Software
     description: If you're reporting a bug about our interaction with other software, what software? What versions?
     placeholder: |
-      vim 8.2 (inside WSL)
-      OpenSSH_for_Windows_8.1p1
-      My Cool Application v0.3 (include a code snippet if it would help!)
+      vim 9.1 (inside WSL)
+      OpenSSH_for_Windows_9.5p1
+      My Cool Application v0.4 (include a code snippet if it would help!)
   validations:
     required: false
 

.github/ISSUE_TEMPLATE/Documentation_Issue.md

@@ -1,10 +0,0 @@
----
-name: "Documentation Issue 📚"
-about: Report issues in our documentation
-title: ''
-labels: Issue-Docs
-assignees: ''
-
----
-
-<!-- Briefly describe which document needs to be corrected and why. -->

.github/ISSUE_TEMPLATE/Feature_Request.md

@@ -1,35 +0,0 @@
----
-name: "Feature Request/Idea 🚀"
-about: Suggest a new feature or improvement (this does not mean you have to implement
-  it)
-title: ''
-labels: Issue-Feature
-assignees: ''
-
----
-
-<!-- 
-🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨
-
-I ACKNOWLEDGE THE FOLLOWING BEFORE PROCEEDING:
-1. If I delete this entire template and go my own path, the core team may close my issue without further explanation or engagement.
-2. If I list multiple bugs/concerns in this one issue, the core team may close my issue without further explanation or engagement.
-3. If I write an issue that has many duplicates, the core team may close my issue without further explanation or engagement (and without necessarily spending time to find the exact duplicate ID number).
-4. If I leave the title incomplete when filing the issue, the core team may close my issue without further explanation or engagement.
-5. If I file something completely blank in the body, the core team may close my issue without further explanation or engagement.
-
-All good? Then proceed!
--->
-
-# Description of the new feature/enhancement
-
-<!-- 
-A clear and concise description of what the problem is that the new feature would solve.
-Describe why and how a user would use this new functionality (if applicable).
--->
-
-# Proposed technical implementation details (optional)
-
-<!-- 
-A clear and concise description of what you want to happen.
--->

.github/ISSUE_TEMPLATE/Feature_Request.yml

@@ -0,0 +1,20 @@
+name: "Feature Request/Idea 🚀"
+description: Suggest a new feature or improvement (this does not mean you have to implement it)
+labels: [Issue-Feature]
+type: Feature
+body:
+- type: textarea
+  attributes:
+    label: Description of the new feature
+    description: A clear and concise description of what the problem is that the new feature would solve.
+    placeholder: |
+      ... and guess what? I have four Terminals. And I have a hover car, and a hover house. And my computer's a runner, and it shows.
+  validations:
+    required: true
+
+- type: textarea
+  attributes:
+    label: Proposed technical implementation details
+    description: This field is optional. If you have any ideas, let us know!
+  validations:
+    required: false

.github/actions/spelling/allow/allow.txt

@@ -5,11 +5,11 @@ breadcrumbs
 ccmp
 ccon
 clickable
+cmark
 CMMI
 colorbrewer
 consvc
 copyable
-CText
 dalet
 dcs
 deselection
@@ -21,9 +21,9 @@ dze
 dzhe
 Emacspeak
 Fitt
-flac
 FTCS
 gantt
+gfm
 ghe
 gje
 godbolt
@@ -57,7 +57,6 @@ ptys
 pwn
 pwshw
 qof
-QOL
 qps
 quickfix
 rclt
@@ -76,7 +75,6 @@ slnt
 stakeholders
 sustainability
 sxn
-Tencent
 TLDR
 tonos
 toolset

.github/actions/spelling/allow/apis.txt

@@ -43,6 +43,7 @@ DONTADDTORECENT
 DWMSBT
 DWMWA
 DWORDLONG
+EMPH
 endfor
 ENDSESSION
 enumset
@@ -62,6 +63,7 @@ GETDESKWALLPAPER
 GETHIGHCONTRAST
 GETMOUSEHOVERTIME
 GETTEXTLENGTH
+HARDBREAKS
 Hashtable
 HIGHCONTRASTON
 HIGHCONTRASTW
@@ -115,6 +117,7 @@ IUri
 IVirtual
 KEYSELECT
 LCID
+LINEBREAK
 llabs
 llu
 localtime
@@ -148,6 +151,7 @@ NIF
 NIN
 NOAGGREGATION
 NOASYNC
+NOBREAKS
 NOCHANGEDIR
 NOPROGRESS
 NOREDIRECTIONBITMAP
@@ -175,6 +179,7 @@ PALLOC
 PATINVERT
 PEXPLICIT
 PICKFOLDERS
+PINPUT
 pmr
 ptstr
 QUERYENDSESSION
@@ -203,6 +208,7 @@ SINGLEUSE
 SIZENS
 smoothstep
 snprintf
+SOFTBREAK
 spsc
 sregex
 SRWLOC
@@ -285,5 +291,4 @@ xtree
 xutility
 YIcon
 YMax
-zstring
 zwstring

.github/actions/spelling/excludes.txt

@@ -104,6 +104,7 @@
 ^doc/reference/UTF8-torture-test\.txt$
 ^doc/reference/windows-terminal-logo\.ans$
 ^oss/
+^NOTICE.md
 ^samples/PixelShaders/Screenshots/
 ^src/interactivity/onecore/BgfxEngine\.
 ^src/renderer/atlas/

.github/actions/spelling/expect/expect.txt

@@ -87,7 +87,6 @@ autoscrolling
 Autowrap
 AVerify
 awch
-AZCOPY
 azurecr
 AZZ
 backgrounded
@@ -215,7 +214,6 @@ codepages
 codepath
 coinit
 colorizing
-COLORONCOLOR
 COLORREFs
 colorschemes
 colorspec
@@ -921,6 +919,7 @@ Keymapping
 keyscan
 keystate
 keyups
+Kickstart
 KILLACTIVE
 KILLFOCUS
 kinda
@@ -1160,8 +1159,6 @@ nfe
 NLSMODE
 nnn
 NOACTIVATE
-NOACTIVATEKEYBOARDLAYOUT
-NOACTIVATETIP
 NOAPPLYNOW
 NOCLIP
 NOCOMM
@@ -1430,7 +1427,6 @@ propvar
 propvariant
 propvarutil
 psa
-PSCRED
 PSECURITY
 pseudoconsole
 pseudoterminal
@@ -1469,6 +1465,7 @@ QWER
 Qxxxxxxxxxxxxxxx
 qzmp
 RAII
+Ralph
 RALT
 rasterbar
 rasterfont
@@ -1601,6 +1598,7 @@ scrolllock
 scrolloffset
 SCROLLSCALE
 SCROLLSCREENBUFFER
+scursor
 sddl
 SDKDDK
 securityappcontainer
@@ -1692,7 +1690,6 @@ SMARTQUOTE
 SMTO
 snapcx
 snapcy
-snk
 SOLIDBOX
 Solutiondir
 somefile
@@ -1817,12 +1814,10 @@ TEXTMETRICW
 textmode
 texttests
 TFunction
-TFCAT
 THUMBPOSITION
 THUMBTRACK
 TIcon
 tilunittests
-TIPCAP
 titlebars
 TITLEISLINKNAME
 TJson
@@ -1885,8 +1880,6 @@ UIACCESS
 uiacore
 uiautomationcore
 uielem
-UIELEMENTENABLED
-UIELEMENTENABLEDONLY
 UINTs
 ul
 uld
@@ -2022,6 +2015,7 @@ WHelper
 wic
 WIDTHSCROLL
 Widthx
+Wiggum
 wil
 WImpl
 WINAPI

.github/workflows/addToProject.yml

@@ -13,7 +13,7 @@ jobs:
     name: Add issue to project
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/add-to-project@v1.0.1
+      - uses: actions/add-to-project@v1.0.2
         with:
           project-url: https://github.com/orgs/microsoft/projects/159
           github-token: ${{ secrets.ADD_TO_PROJECT_PAT }}

NOTICE.md

@@ -281,6 +281,181 @@ CONDITIONS OF ANY KIND, either express or implied. See the License for the
 specific language governing permissions and limitations under the License.
 ```
 
+## cmark
+**Source**: [https://github.com/commonmark/cmark](https://github.com/commonmark/cmark)
+
+### License
+Copyright (c) 2014, John MacFarlane
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+-----
+
+houdini.h, houdini_href_e.c, houdini_html_e.c, houdini_html_u.c
+
+derive from https://github.com/vmg/houdini (with some modifications)
+
+Copyright (C) 2012 Vicent Martí
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+-----
+
+buffer.h, buffer.c, chunk.h
+
+are derived from code (C) 2012 Github, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+-----
+
+utf8.c and utf8.c
+
+are derived from utf8proc
+(<http://www.public-software-group.org/utf8proc>),
+(C) 2009 Public Software Group e. V., Berlin, Germany.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+-----
+
+The normalization code in normalize.py was derived from the
+markdowntest project, Copyright 2013 Karl Dubost:
+
+The MIT License (MIT)
+
+Copyright (c) 2013 Karl Dubost
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+-----
+
+The CommonMark spec (test/spec.txt) is
+
+Copyright (C) 2014-15 John MacFarlane
+
+Released under the Creative Commons CC-BY-SA 4.0 license:
+<http://creativecommons.org/licenses/by-sa/4.0/>.
+
+-----
+
+The test software in test/ is
+
+Copyright (c) 2014, John MacFarlane
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 # Microsoft Open Source
 
 This product also incorporates source code from other Microsoft open source projects, all licensed under the MIT license.

NuGet.Config

@@ -4,7 +4,7 @@
         <clear />
         <!-- Dependencies that we can turn on to force override for testing purposes before uploading. -->
         <!--<add key="Static Package Dependencies" value="dep\packages" />-->
-        <add key="TerminalDependencies" value="https://pkgs.dev.azure.com/shine-oss/terminal/_packaging/TerminalDependencies%40Local/nuget/v3/index.json" />
+        <add key="TerminalDependencies" value="https://pkgs.dev.azure.com/shine-oss/terminal/_packaging/TerminalDependencies/nuget/v3/index.json" />
     </packageSources>
     <disabledPackageSources>
         <clear />

OpenConsole.sln

@@ -405,6 +405,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "RenderingTests", "src\tools
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Microsoft.Terminal.UI", "src\cascadia\UIHelpers\UIHelpers.vcxproj", "{6515F03F-E56D-4DB4-B23D-AC4FB80DB36F}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Microsoft.Terminal.UI.Markdown", "src\cascadia\UIMarkdown\UIMarkdown.vcxproj", "{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}"
+EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "benchcat", "src\tools\benchcat\benchcat.vcxproj", "{2C836962-9543-4CE5-B834-D28E1F124B66}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ConsoleMonitor", "src\tools\ConsoleMonitor\ConsoleMonitor.vcxproj", "{328729E9-6723-416E-9C98-951F1473BBE1}"
@@ -2302,6 +2304,28 @@ Global
 		{6515F03F-E56D-4DB4-B23D-AC4FB80DB36F}.Release|x64.Build.0 = Release|x64
 		{6515F03F-E56D-4DB4-B23D-AC4FB80DB36F}.Release|x86.ActiveCfg = Release|Win32
 		{6515F03F-E56D-4DB4-B23D-AC4FB80DB36F}.Release|x86.Build.0 = Release|Win32
+        {7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.AuditMode|Any CPU.ActiveCfg = Debug|Win32
+        {7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.AuditMode|ARM64.ActiveCfg = Release|ARM64
+        {7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.AuditMode|x64.ActiveCfg = Release|x64
+        {7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.AuditMode|x86.ActiveCfg = Release|Win32
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Debug|Any CPU.ActiveCfg = Debug|x64
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Debug|ARM64.Build.0 = Debug|ARM64
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Debug|x64.ActiveCfg = Debug|x64
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Debug|x64.Build.0 = Debug|x64
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Debug|x86.ActiveCfg = Debug|Win32
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Debug|x86.Build.0 = Debug|Win32
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Fuzzing|Any CPU.ActiveCfg = Fuzzing|x64
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Fuzzing|ARM64.ActiveCfg = Fuzzing|ARM64
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Fuzzing|x64.ActiveCfg = Fuzzing|x64
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Fuzzing|x86.ActiveCfg = Fuzzing|Win32
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Release|Any CPU.ActiveCfg = Release|x64
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Release|ARM64.ActiveCfg = Release|ARM64
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Release|ARM64.Build.0 = Release|ARM64
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Release|x64.ActiveCfg = Release|x64
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Release|x64.Build.0 = Release|x64
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Release|x86.ActiveCfg = Release|Win32
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}.Release|x86.Build.0 = Release|Win32
 		{2C836962-9543-4CE5-B834-D28E1F124B66}.AuditMode|Any CPU.ActiveCfg = AuditMode|Win32
 		{2C836962-9543-4CE5-B834-D28E1F124B66}.AuditMode|ARM64.ActiveCfg = Release|ARM64
 		{2C836962-9543-4CE5-B834-D28E1F124B66}.AuditMode|x64.ActiveCfg = Release|x64
@@ -2455,6 +2479,7 @@ Global
 		{613CCB57-5FA9-48EF-80D0-6B1E319E20C4} = {A10C4720-DCA4-4640-9749-67F4314F527C}
 		{37C995E0-2349-4154-8E77-4A52C0C7F46D} = {A10C4720-DCA4-4640-9749-67F4314F527C}
 		{6515F03F-E56D-4DB4-B23D-AC4FB80DB36F} = {61901E80-E97D-4D61-A9BB-E8F2FDA8B40C}
+		{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F} = {61901E80-E97D-4D61-A9BB-E8F2FDA8B40C}
 		{2C836962-9543-4CE5-B834-D28E1F124B66} = {A10C4720-DCA4-4640-9749-67F4314F527C}
 		{328729E9-6723-416E-9C98-951F1473BBE1} = {A10C4720-DCA4-4640-9749-67F4314F527C}
 		{BE92101C-04F8-48DA-99F0-E1F4F1D2DC48} = {A10C4720-DCA4-4640-9749-67F4314F527C}

build/config/esrp.build.batch.wpfdotnet.json

@@ -6,20 +6,6 @@
         ],
         "SigningInfo": {
             "Operations": [
-                {
-                    "KeyCode": "CP-233904-SN",
-                    "OperationSetCode": "StrongNameSign",
-                    "ToolName": "sign",
-                    "ToolVersion": "1.0",
-                    "Parameters": []
-                },
-                {
-                    "KeyCode": "CP-233904-SN",
-                    "OperationSetCode": "StrongNameVerify",
-                    "ToolName": "sign",
-                    "ToolVersion": "1.0",
-                    "Parameters": []
-                },
                 {
                     "KeyCode": "CP-230012",
                     "OperationSetCode": "SigntoolSign",

build/config/tsa.json

@@ -1,6 +1,6 @@
 {
     "instanceUrl": "https://microsoft.visualstudio.com",
     "projectName": "OS",
-    "areaPath": "OS\\Windows Client and Services\\WinPD\\DFX-Developer Fundamentals and Experiences\\DEFT\\SHINE\\Terminal",
+    "areaPath": "OS\\Windows Client and Services\\WinPD\\DEEP-Developer Experience, Ecosystem and Partnerships\\SHINE\\Terminal",
     "notificationAliases": ["condev@microsoft.com", "duhowett@microsoft.com"]
 }

build/packages.config

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
+  <package id="MUXCustomBuildTasks" version="1.0.48" targetFramework="native" />
   <package id="Microsoft.Taef" version="10.93.240607003" targetFramework="native" />
   <package id="Microsoft.Internal.PGO-Helpers.Cpp" version="0.2.34" targetFramework="native" />
   <package id="Microsoft.Debugging.Tools.PdbStr" version="20220617.1556.0" targetFramework="native" />

build/pgo/Terminal.PGO.props

@@ -9,7 +9,7 @@
 
   <PropertyGroup>
     <!-- Optional, defaults to main.  Name of the branch which will be used for calculating branch point. -->
-    <PGOBranch>release-1.22</PGOBranch>
+    <PGOBranch>main</PGOBranch>
 
     <!-- Mandatory.  Name of the NuGet package which will contain PGO databases for consumption by build system. -->
     <PGOPackageName>Microsoft.Internal.Windows.Terminal.PGODatabase</PGOPackageName>

build/pipelines/ob-nightly.yml

@@ -37,8 +37,6 @@ extends:
       akvName: $(SigningAKVName)
       authCertName: $(SigningAuthCertName)
       signCertName: $(SigningSignCertName)
-      useManagedIdentity: $(SigningUseManagedIdentity)
-      clientId: $(SigningOriginalClientId)
     publishSymbolsToPublic: true
     publishVpackToWindows: false
     symbolExpiryTime: 15

build/pipelines/ob-release.yml

@@ -85,8 +85,6 @@ extends:
       akvName: $(SigningAKVName)
       authCertName: $(SigningAuthCertName)
       signCertName: $(SigningSignCertName)
-      useManagedIdentity: $(SigningUseManagedIdentity)
-      clientId: $(SigningOriginalClientId)
     terminalInternalPackageVersion: ${{ parameters.terminalInternalPackageVersion }}
     publishSymbolsToPublic: ${{ parameters.publishSymbolsToPublic }}
     publishVpackToWindows: ${{ parameters.publishVpackToWindows }}

build/pipelines/templates-v2/job-check-code-format.yml

@@ -10,6 +10,6 @@ jobs:
     submodules: false
     clean: true
 
-  - powershell: |-
+  - pwsh: |-
       .\build\scripts\Invoke-FormattingCheck.ps1
     displayName: 'Run formatters'

build/pipelines/templates-v2/job-deploy-to-azure-storage.yml

@@ -75,13 +75,18 @@ jobs:
       }
     displayName: "Wrangle Unpackaged builds into place, rename"
 
-  - task: AzurePowerShell@5
+  - powershell: |-
+      Get-PackageProvider -Name NuGet -ForceBootstrap
+      Install-Module -Verbose -AllowClobber -Force Az.Accounts, Az.Storage, Az.Network, Az.Resources, Az.Compute
+    displayName: Install Azure Module Dependencies
+
+  - task: AzureFileCopy@6
     displayName: Publish to Storage Account
     inputs:
+      sourcePath: _out/*
+      Destination: AzureBlob
       azureSubscription: ${{ parameters.subscription }}
-      azurePowerShellVersion: LatestVersion
-      pwsh: true
-      ScriptType: InlineScript
-      Inline: |-
-        $Env:AZCOPY_AUTO_LOGIN_TYPE="PSCRED"
-        & AzCopy copy "_out\*" "https://${{ parameters.storageAccount }}.blob.core.windows.net/${{ parameters.storageContainer }}/" --content-type application/octet-stream
+      storage: ${{ parameters.storageAccount }}
+      ContainerName: ${{ parameters.storageContainer }}
+      AdditionalArgumentsForBlobCopy: "--content-type application/octet-stream"
+

build/pipelines/templates-v2/job-merge-msix-into-bundle.yml

@@ -147,10 +147,6 @@ jobs:
         ValidateSignature: true
         Verbosity: 'Verbose'
 
-  - pwsh: |-
-      tar -c -v --format=zip -f "$(JobOutputDirectory)/GroupPolicyTemplates_$(XES_APPXMANIFESTVERSION).zip" -C "$(Build.SourcesDirectory)/policies" *
-    displayName: Package GPO Templates
-
   - ${{ parameters.afterBuildSteps }}
 
   - ${{ if eq(parameters.publishArtifacts, true) }}:

build/pipelines/templates-v2/job-publish-symbols-using-symbolrequestprod-api.yml

@@ -52,6 +52,11 @@ jobs:
       itemPattern: '**/*.pdb'
       targetPath: '$(Build.SourcesDirectory)/bin'
 
+  - powershell: |-
+      Get-PackageProvider -Name NuGet -ForceBootstrap
+      Install-Module -Verbose -AllowClobber -Force Az.Accounts, Az.Storage, Az.Network, Az.Resources, Az.Compute
+    displayName: Install Azure Module Dependencies
+
   # Transit the Azure token from the Service Connection into a secret variable for the rest of the pipeline to use.
   - task: AzurePowerShell@5
     displayName: Generate an Azure Token
@@ -61,7 +66,7 @@ jobs:
       pwsh: true
       ScriptType: InlineScript
       Inline: |-
-        $AzToken = (Get-AzAccessToken -AsSecureString -ResourceUrl api://30471ccf-0966-45b9-a979-065dbedb24c1).Token | ConvertFrom-SecureString -AsPlainText
+        $AzToken = (Get-AzAccessToken -ResourceUrl api://30471ccf-0966-45b9-a979-065dbedb24c1).Token
         Write-Host "##vso[task.setvariable variable=SymbolAccessToken;issecret=true]$AzToken"
 
 

build/pipelines/templates-v2/job-submit-windows-vpack.yml

@@ -69,3 +69,10 @@ jobs:
       artifact: $(JobOutputArtifactName)
       displayName: 'Publish VPack Manifest to Drop'
 
+  - task: PkgESFCIBGit@12
+    displayName: 'Submit VPack Manifest to Windows'
+    inputs:
+      configPath: '$(Build.SourcesDirectory)\build\config\GitCheckin.json'
+      artifactsDirectory: $(XES_VPACKMANIFESTDIRECTORY)
+      prTimeOut: 5
+

build/pipelines/templates-v2/pipeline-onebranch-full-release-build.yml

@@ -78,9 +78,7 @@ extends:
     template: v2/Microsoft.NonOfficial.yml@templates
   parameters:
     featureFlags:
-      WindowsHostVersion:
-        Version: 2022
-        Network: R1
+      WindowsHostVersion: 1ESWindows2022
     platform:
       name: 'windows_undocked'
       product: 'Windows Terminal'

build/pipelines/templates-v2/steps-ensure-nuget-version.yml

@@ -1,12 +1,5 @@
 steps:
-- ${{ if eq(variables['System.CollectionId'], 'cb55739e-4afe-46a3-970f-1b49d8ee7564') }}:
-  - pwsh: |-
-      Write-Host "Assuming NuGet is already installed..."
-      & nuget.exe help
-    displayName: Assume NuGet is fine
-
-- ${{ else }}:
-  - task: NuGetToolInstaller@1
-    displayName: Use NuGet 6.6.1
-    inputs:
-      versionSpec: 6.6.1
+- task: NuGetToolInstaller@1
+  displayName: Use NuGet 6.6.1
+  inputs:
+    versionSpec: 6.6.1

build/pipelines/templates-v2/steps-esrp-signing.yml

@@ -19,6 +19,4 @@ steps:
       AuthAKVName: ${{ parameters.signingIdentity.akvName }}
       AuthCertName: ${{ parameters.signingIdentity.authCertName }}
       AuthSignCertName: ${{ parameters.signingIdentity.signCertName }}
-      UseMSIAuthentication: ${{ coalesce(parameters.signingIdentity.useManagedIdentity, 'false') }}
-      EsrpClientId: ${{ parameters.signingIdentity.clientId }}
       ${{ insert }}: ${{ parameters.inputs }}

build/scripts/Set-LatestVCToolsVersion.ps1

@@ -1,28 +1,8 @@
 $VSInstances = ([xml](& 'C:\Program Files (x86)\Microsoft Visual Studio\Installer\vswhere.exe' -latest -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -include packages -format xml))
 $VSPackages = $VSInstances.instances.instance.packages.package
-$LatestVCPackage = ($VSPackages | ? { $_.id -eq "Microsoft.VisualCpp.Tools.Core" })
+$LatestVCPackage = ($VSInstances.instances.instance.packages.package | ? { $_.id -eq "Microsoft.VisualCpp.CRT.Source" })
 $LatestVCToolsVersion = $LatestVCPackage.version;
 
-$VSRoot = (& 'C:\Program Files (x86)\Microsoft Visual Studio\Installer\vswhere.exe' -latest -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 -property 'resolvedInstallationPath')
-$VCToolsRoot = Join-Path $VSRoot "VC\Tools\MSVC"
-
-# We have observed a few instances where the VC tools package version actually
-# differs from the version on the files themselves. We might as well check
-# whether the version we just found _actually exists_ before we use it.
-# We'll use whichever highest version exists.
-$PackageVCToolPath = Join-Path $VCToolsRoot $LatestVCToolsVersion
-If ($Null -Eq (Get-Item $PackageVCToolPath -ErrorAction:Ignore)) {
-    $VCToolsVersions = Get-ChildItem $VCToolsRoot | ForEach-Object {
-        [Version]$_.Name
-    } | Sort -Descending
-    $LatestActualVCToolsVersion = $VCToolsVersions | Select -First 1
-
-    If ([Version]$LatestVCToolsVersion -Ne $LatestActualVCToolsVersion) {
-        Write-Output "VC Tools Mismatch: Directory = $LatestActualVCToolsVersion, Package = $LatestVCToolsVersion"
-        $LatestVCToolsVersion = $LatestActualVCToolsVersion.ToString(3)
-    }
-}
-
 Write-Output "Latest VCToolsVersion: $LatestVCToolsVersion"
 Write-Output "Updating VCToolsVersion environment variable for job"
 Write-Output "##vso[task.setvariable variable=VCToolsVersion]$LatestVCToolsVersion"

custom.props

@@ -5,10 +5,7 @@
     <XesUseOneStoreVersioning>true</XesUseOneStoreVersioning>
     <XesBaseYearForStoreVersion>2024</XesBaseYearForStoreVersion>
     <VersionMajor>1</VersionMajor>
-    <VersionMinor>22</VersionMinor>
+    <VersionMinor>23</VersionMinor>
     <VersionInfoProductName>Windows Terminal</VersionInfoProductName>
-    <VersionInfoCulture>1033</VersionInfoCulture>
-    <!-- The default has a spacing problem -->
-    <VersionInfoCopyRight>\xa9 Microsoft Corporation. All rights reserved.</VersionInfoCopyRight>
   </PropertyGroup>
 </Project>

dep/vcpkg-overlay-ports/fmt/fix-write-batch.patch

@@ -1,13 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 88c12148..967b53dd 100644
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -260,7 +260,7 @@ if (FMT_MASTER_PROJECT AND CMAKE_GENERATOR MATCHES "Visual Studio")
-   join(netfxpath
-        "C:\\Program Files\\Reference Assemblies\\Microsoft\\Framework\\"
-        ".NETFramework\\v4.0")
--  file(WRITE run-msbuild.bat "
-+  file(WRITE "${CMAKE_BINARY_DIR}/run-msbuild.bat" "
-     ${MSBUILD_SETUP}
-     ${CMAKE_MAKE_PROGRAM} -p:FrameworkPathOverride=\"${netfxpath}\" %*")
- endif ()

dep/vcpkg-overlay-ports/fmt/portfile.cmake

@@ -1,38 +0,0 @@
-vcpkg_from_github(
-    OUT_SOURCE_PATH SOURCE_PATH
-    REPO fmtlib/fmt
-    REF "${VERSION}"
-    SHA512 573b7de1bd224b7b1b60d44808a843db35d4bc4634f72a9edcb52cf68e99ca66c744fd5d5c97b4336ba70b94abdabac5fc253b245d0d5cd8bbe2a096bf941e39
-    HEAD_REF master
-    PATCHES
-        fix-write-batch.patch
-)
-
-vcpkg_cmake_configure(
-    SOURCE_PATH "${SOURCE_PATH}"
-    OPTIONS
-        -DFMT_CMAKE_DIR=share/fmt
-        -DFMT_TEST=OFF
-        -DFMT_DOC=OFF
-        -DFMT_PEDANTIC=ON
-)
-
-vcpkg_cmake_install()
-vcpkg_cmake_config_fixup()
-vcpkg_fixup_pkgconfig()
-vcpkg_copy_pdbs()
-
-if(VCPKG_LIBRARY_LINKAGE STREQUAL dynamic)
-    vcpkg_replace_string("${CURRENT_PACKAGES_DIR}/include/fmt/base.h"
-        "defined(FMT_SHARED)"
-        "1"
-    )
-endif()
-
-file(REMOVE_RECURSE
-    "${CURRENT_PACKAGES_DIR}/debug/include"
-    "${CURRENT_PACKAGES_DIR}/debug/share"
-)
-
-file(INSTALL "${CMAKE_CURRENT_LIST_DIR}/usage" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}")
-vcpkg_install_copyright(FILE_LIST "${SOURCE_PATH}/LICENSE")

dep/vcpkg-overlay-ports/fmt/usage

@@ -1,8 +0,0 @@
-The package fmt provides CMake targets:
-
-    find_package(fmt CONFIG REQUIRED)
-    target_link_libraries(main PRIVATE fmt::fmt)
-
-    # Or use the header-only version
-    find_package(fmt CONFIG REQUIRED)
-    target_link_libraries(main PRIVATE fmt::fmt-header-only)

dep/vcpkg-overlay-ports/fmt/vcpkg.json

@@ -1,17 +0,0 @@
-{
-  "name": "fmt",
-  "version": "11.1.4",
-  "description": "{fmt} is an open-source formatting library providing a fast and safe alternative to C stdio and C++ iostreams.",
-  "homepage": "https://github.com/fmtlib/fmt",
-  "license": "MIT",
-  "dependencies": [
-    {
-      "name": "vcpkg-cmake",
-      "host": true
-    },
-    {
-      "name": "vcpkg-cmake-config",
-      "host": true
-    }
-  ]
-}

doc/cascadia/Unittesting-CppWinRT-Xaml.md

@@ -380,7 +380,7 @@ Here's the AppxManifest we're using:
   </Properties>
 
   <Dependencies>
-    <TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.18362.0" MaxVersionTested="10.0.26100.0" />
+    <TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.18362.0" MaxVersionTested="10.0.22621.0" />
     <PackageDependency Name="Microsoft.VCLibs.140.00.Debug" MinVersion="14.0.27023.1" Publisher="CN=Microsoft Corporation, O=Microsoft Corporation, L=Redmond, S=Washington, C=US" />
     <PackageDependency Name="Microsoft.VCLibs.140.00.Debug.UWPDesktop" MinVersion="14.0.27027.1" Publisher="CN=Microsoft Corporation, O=Microsoft Corporation, L=Redmond, S=Washington, C=US" />
   </Dependencies>
@@ -517,7 +517,7 @@ This is because of a few key lines we already put in the appxmanifest:
 
 ```xml
   <Dependencies>
-    <TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.18362.0" MaxVersionTested="10.0.26100.0" />
+    <TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.18362.0" MaxVersionTested="10.0.22621.0" />
     <PackageDependency Name="Microsoft.VCLibs.140.00.Debug" MinVersion="14.0.27023.1" Publisher="CN=Microsoft Corporation, O=Microsoft Corporation, L=Redmond, S=Washington, C=US" />
     <PackageDependency Name="Microsoft.VCLibs.140.00.Debug.UWPDesktop" MinVersion="14.0.27027.1" Publisher="CN=Microsoft Corporation, O=Microsoft Corporation, L=Redmond, S=Washington, C=US" />
   </Dependencies>

doc/cascadia/profiles.schema.json

@@ -35,8 +35,7 @@
       "enum": [
         "Windows.Terminal.Wsl",
         "Windows.Terminal.Azure",
-        "Windows.Terminal.PowershellCore",
-        "Windows.Terminal.VisualStudio"
+        "Windows.Terminal.PowershellCore"
       ],
       "type": "string"
     },
@@ -734,6 +733,9 @@
               "type": "string",
               "default": "",
               "description": "The name or GUID of the profile to show in this entry"
+            },
+            "icon": {
+              "$ref": "#/$defs/Icon"
             }
           }
         }
@@ -805,6 +807,9 @@
               "type": "string",
               "default": "",
               "description": "The ID of the action to show in this entry"
+            },
+            "icon": {
+              "$ref": "#/$defs/Icon"
             }
           }
         }
@@ -880,6 +885,11 @@
               "default": false,
               "description": "If true, the copied content will be copied as a single line (even if there are hard line breaks present in the text). If false, newlines persist from the selected text."
             },
+            "withControlSequences": {
+              "type": "boolean",
+              "default": false,
+              "description": "If true, copied content will contain ANSI escape code control sequences representing the styling of the content."
+            },
             "dismissSelection": {
               "type": "boolean",
               "default": true,
@@ -2341,7 +2351,7 @@
           "description": "When set to `true`, the terminal window will auto-center itself on the display it opens on. The terminal will use the \"initialPosition\" to determine which display to open on.",
           "type": "boolean"
         },
-        "inputServiceWarning": {
+        "warning.inputService": {
           "default": true,
           "description": "Warning if 'Touch Keyboard and Handwriting Panel Service' is disabled.",
           "type": "boolean"
@@ -2366,14 +2376,10 @@
           "description": "When set to true, Terminal windows will not be able to interact with each other (including global hotkeys, tab drag/drop, running commandlines in existing windows, etc.). This is a compatibility escape hatch for users who are running into certain windowing issues.",
           "type": "boolean"
         },
-        "compatibility.textMeasurement": {
-          "default": "graphemes",
-          "description": "This changes the way incoming text is grouped into cells. The \"graphemes\" option is the most modern and Unicode-correct way to do so, while \"wcswidth\" is a common approach on UNIX, and \"console\" replicates the way it used to work on Windows.",
-          "enum": [
-            "graphemes",
-            "wcswidth",
-            "console"
-          ]
+        "compatibility.allowDECRQCRA": {
+          "default": false,
+          "description": "When set to true, the terminal will support the DECRQCRA (Request Checksum of Rectangular Area) escape sequence.",
+          "type": "boolean"
         },
         "copyFormatting": {
           "default": true,
@@ -2405,12 +2411,12 @@
           "description": "When set to `true`, visual animations will be disabled across the application.",
           "type": "boolean"
         },
-        "largePasteWarning": {
+        "warning.largePaste": {
           "default": true,
           "description": "When set to true, trying to paste text with more than 5 KiB of characters will display a warning asking you whether to continue or not with the paste.",
           "type": "boolean"
         },
-        "multiLinePasteWarning": {
+        "warning.multiLinePaste": {
           "default": true,
           "description": "When set to true, trying to paste text with a \"new line\" character will display a warning asking you whether to continue or not with the paste.",
           "type": "boolean"
@@ -2473,6 +2479,11 @@
           "minimum": 1,
           "type": "integer"
         },
+        "startOnUserLogin": {
+          "default": false,
+          "description": "When set to true, this enables the launch of Terminal at startup. Setting this to false will disable the startup task entry. If the Terminal startup task entry is disabled either by org policy or by user action this setting will have no effect.",
+          "type": "boolean"
+        },
         "firstWindowPreference": {
           "default": "defaultProfile",
           "description": "Defines what behavior the terminal takes when it starts. \"defaultProfile\" will have the terminal launch with one tab of the default profile, and \"persistedWindowLayout\" will cause the terminal to save its layout on close and reload it on open.",
@@ -2603,7 +2614,7 @@
           "description": "Determines the delimiters used in a double click selection.",
           "type": "string"
         },
-        "confirmCloseAllTabs": {
+        "warning.confirmCloseAllTabs": {
           "default": true,
           "description": "When set to \"true\" closing a window with multiple tabs open will require confirmation.  When set to \"false\", the confirmation dialog will not appear.",
           "type": "boolean"
@@ -2709,16 +2720,6 @@
           "description": "When set to true, when opening a new tab or pane it will get reloaded environment variables.",
           "type": "boolean"
         },
-        "compatibility.allowDECRQCRA": {
-          "default": false,
-          "description": "When set to true, the terminal will support the DECRQCRA (Request Checksum of Rectangular Area) escape sequence.",
-          "type": "boolean"
-        },
-        "compatibility.allowOSC52": {
-          "default": true,
-          "description": "When set to true, VT applications will be allowed to set the contents of the local clipboard using OSC 52 (Manipulate Selection Data).",
-          "type": "boolean"
-        },
         "unfocusedAppearance": {
           "$ref": "#/$defs/AppearanceConfig",
           "description": "Sets the appearance of the terminal when it is unfocused.",

policies/WindowsTerminal.admx

@@ -9,7 +9,6 @@
   <supportedOn>
     <definitions>
       <definition name="SUPPORTED_WindowsTerminal_1_21" displayName="$(string.SUPPORTED_WindowsTerminal_1_21)" />
-      <definition name="SUPPORTED_DefaultTerminalApplication" displayName="$(string.SUPPORTED_DefaultTerminalApplication)" />
     </definitions>
   </supportedOn>
   <categories>
@@ -25,61 +24,5 @@
         <multiText id="DisabledProfileSources" valueName="DisabledProfileSources" required="true" />
       </elements>
     </policy>
-    <policy name="DefaultTerminalApplication" class="User" displayName="$(string.DefaultTerminalApplication)" explainText="$(string.DefaultTerminalApplicationText)" presentation="$(presentation.TermAppSelection)" key="Console\%%Startup">
-      <parentCategory ref="WindowsTerminal" />
-      <supportedOn ref="SUPPORTED_DefaultTerminalApplication" />
-      <elements>
-        <enum id="TermAppSelect" required="true" valueName="DelegationTerminal">
-          <item displayName="$(string.TermAppAutomatic)">
-            <value>
-              <string>{00000000-0000-0000-0000-000000000000}</string>
-            </value>
-            <valueList>
-              <item key="Console\%%Startup" valueName="DelegationConsole">
-                <value>
-                  <string>{00000000-0000-0000-0000-000000000000}</string>
-                </value>
-              </item>
-            </valueList>
-          </item>
-          <item displayName="$(string.TermAppConsoleHost)">
-            <value>
-              <string>{B23D10C0-E52E-411E-9D5B-C09FDF709C7D}</string>
-            </value>
-            <valueList>
-              <item key="Console\%%Startup" valueName="DelegationConsole">
-                <value>
-                  <string>{B23D10C0-E52E-411E-9D5B-C09FDF709C7D}</string>
-                </value>
-              </item>
-            </valueList>
-          </item>
-          <item displayName="$(string.TermAppWindowsTerminal)">
-            <value>
-              <string>{E12CFF52-A866-4C77-9A90-F570A7AA2C6B}</string>
-            </value>
-            <valueList>
-              <item key="Console\%%Startup" valueName="DelegationConsole">
-                <value>
-                  <string>{2EACA947-7F5F-4CFA-BA87-8F7FBEEFBE69}</string>
-                </value>
-              </item>
-            </valueList>
-          </item>
-          <item displayName="$(string.TermAppWindowsTerminalPreview)">
-            <value>
-              <string>{86633F1F-6454-40EC-89CE-DA4EBA977EE2}</string>
-            </value>
-            <valueList>
-              <item key="Console\%%Startup" valueName="DelegationConsole">
-                <value>
-                  <string>{06EC847C-C0A5-46B8-92CB-7C92F6E35CD5}</string>
-                </value>
-              </item>
-            </valueList>
-          </item>
-        </enum>
-      </elements>
-    </policy>
   </policies>
 </policyDefinitions>

policies/en-US/WindowsTerminal.adml

@@ -7,7 +7,6 @@
     <stringTable>
       <string id="WindowsTerminal">Windows Terminal</string>
       <string id="SUPPORTED_WindowsTerminal_1_21">At least Windows Terminal 1.21</string>
-      <string id="SUPPORTED_DefaultTerminalApplication">At least Windows 11 22H2 or Windows 10 22H2 (Build 19045.3031, KB5026435) with Windows Terminal 1.17</string>
       <string id="DisabledProfileSources">Disabled Profile Sources</string>
       <string id="DisabledProfileSourcesText">Profiles will not be generated from any sources listed here. Source names can be arbitrary strings. Potential candidates can be found as the "source" property on profile definitions in Windows Terminal's settings.json file.
 
@@ -19,22 +18,11 @@ Common sources are:
 For instance, setting this policy to Windows.Terminal.Wsl will disable the builtin WSL integration of Windows Terminal.
 
 Note: Existing profiles will disappear from Windows Terminal after adding their source to this policy.</string>
-      <string id="DefaultTerminalApplication">Default terminal application</string>
-      <string id="DefaultTerminalApplicationText">Select the default terminal application used in Windows.
-
-If you select Windows Terminal Preview and it is not installed the system will fallback to the legacy Windows Console Host. (Please note that the settings interfaces showing "Let windows decide" in this case as configuration.)</string>
-      <string id="TermAppAutomatic">Automatic selection (Windows Terminal, if available)</string>
-      <string id="TermAppConsoleHost">Windows Console Host (legacy)</string>
-      <string id="TermAppWindowsTerminal">Windows Terminal</string>
-      <string id="TermAppWindowsTerminalPreview">Windows Terminal Preview (if available)</string>
     </stringTable>
     <presentationTable>
       <presentation id="DisabledProfileSources">
         <multiTextBox refId="DisabledProfileSources">List of disabled sources (one per line)</multiTextBox>
       </presentation>
-      <presentation id="TermAppSelection">
-        <dropdownList refId="TermAppSelect" noSort="true" defaultItem="0">Select from the following options:</dropdownList>
-      </presentation>
     </presentationTable>
   </resources>
 </policyDefinitionResources>

res/fonts/README.md

@@ -8,5 +8,5 @@ Please consult the [license](https://raw.githubusercontent.com/microsoft/cascadi
 
 ### Fonts Included
 
-* Cascadia Code, Cascadia Mono (2407.24)
-   * from microsoft/cascadia-code@56bcca3f2c1e4cb19458954f0e2bb4635960df91
+* Cascadia Code, Cascadia Mono (2404.23)
+   * from microsoft/cascadia-code@1034791e5fc6e060a448d2b29cd94a6c683edb36

scratch/ScratchIslandApp/Package/Package.appxmanifest

@@ -27,7 +27,7 @@
   </Properties>
 
   <Dependencies>
-    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.19041.0" MaxVersionTested="10.0.26100.0" />
+    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.19041.0" MaxVersionTested="10.0.22621.0" />
   </Dependencies>
 
   <Resources>

src/buffer/out/ImageSlice.cpp

@@ -186,20 +186,18 @@ bool ImageSlice::_copyCells(const ImageSlice& srcSlice, const til::CoordType src
     }
 
     // The used destination before and after the written area must be erased.
-    // If this results in the entire range being erased, we return true to let
-    // the caller know that the slice should be deleted.
-    if (dstUsedBegin < dstWriteBegin && _eraseCells(dstUsedBegin, dstWriteBegin))
+    if (dstUsedBegin < dstWriteBegin)
     {
-        return true;
+        _eraseCells(dstUsedBegin, dstWriteBegin);
     }
-    if (dstUsedEnd > dstWriteEnd && _eraseCells(dstWriteEnd, dstUsedEnd))
+    if (dstUsedEnd > dstWriteEnd)
     {
-        return true;
+        _eraseCells(dstWriteEnd, dstUsedEnd);
     }
 
-    // At this point, if the beginning column is not less than the end, that
-    // means this was an empty slice into which nothing was copied, so we can
-    // again return true to let the caller know it should be deleted.
+    // If the beginning column is now not less than the end, that means the
+    // content has been entirely erased, so we return true to let the caller
+    // know that the slice should be deleted.
     return _columnBegin >= _columnEnd;
 }
 
@@ -212,19 +210,10 @@ void ImageSlice::EraseBlock(TextBuffer& buffer, const til::rect rect)
     }
 }
 
-void ImageSlice::EraseCells(TextBuffer& buffer, const til::point at, const til::CoordType distance)
+void ImageSlice::EraseCells(TextBuffer& buffer, const til::point at, const size_t distance)
 {
-    auto x = at.x;
-    auto y = at.y;
-    auto distanceRemaining = distance;
-    while (distanceRemaining > 0)
-    {
-        auto& row = buffer.GetMutableRowByOffset(y);
-        EraseCells(row, x, x + distanceRemaining);
-        distanceRemaining -= (static_cast<til::CoordType>(row.size()) - x);
-        x = 0;
-        y++;
-    }
+    auto& row = buffer.GetMutableRowByOffset(at.y);
+    EraseCells(row, at.x, gsl::narrow_cast<til::CoordType>(at.x + distance));
 }
 
 void ImageSlice::EraseCells(ROW& row, const til::CoordType columnBegin, const til::CoordType columnEnd)

src/buffer/out/ImageSlice.hpp

@@ -41,7 +41,7 @@ public:
     static void CopyRow(const ROW& srcRow, ROW& dstRow);
     static void CopyCells(const ROW& srcRow, const til::CoordType srcColumn, ROW& dstRow, const til::CoordType dstColumnBegin, const til::CoordType dstColumnEnd);
     static void EraseBlock(TextBuffer& buffer, const til::rect rect);
-    static void EraseCells(TextBuffer& buffer, const til::point at, const til::CoordType distance);
+    static void EraseCells(TextBuffer& buffer, const til::point at, const size_t distance);
     static void EraseCells(ROW& row, const til::CoordType columnBegin, const til::CoordType columnEnd);
 
 private:

src/buffer/out/Row.cpp

@@ -426,7 +426,7 @@ OutputCellIterator ROW::WriteCells(OutputCellIterator it, const til::CoordType c
     THROW_HR_IF(E_INVALIDARG, limitRight.value_or(0) >= size());
 
     // If we're given a right-side column limit, use it. Otherwise, the write limit is the final column index available in the char row.
-    const auto finalColumnInRow = gsl::narrow_cast<uint16_t>(limitRight.value_or(size() - 1));
+    const auto finalColumnInRow = limitRight.value_or(size() - 1);
 
     auto currentColor = it->TextAttr();
     uint16_t colorUses = 0;
@@ -937,12 +937,12 @@ void ROW::_resizeChars(uint16_t colEndDirty, uint16_t chBegDirty, size_t chEndDi
     }
 }
 
-RowAttributes& ROW::Attributes() noexcept
+til::small_rle<TextAttribute, uint16_t, 1>& ROW::Attributes() noexcept
 {
     return _attr;
 }
 
-const RowAttributes& ROW::Attributes() const noexcept
+const til::small_rle<TextAttribute, uint16_t, 1>& ROW::Attributes() const noexcept
 {
     return _attr;
 }

src/buffer/out/Row.hpp

@@ -14,11 +14,6 @@
 class ROW;
 class TextBuffer;
 
-// Because MarkKind::Output gets set only on the actually written text,
-// most rows will end up having at least 2 runs: The start of the line
-// with MarkKind::Output and the rest of the line with MarkKind::None.
-using RowAttributes = til::small_rle<TextAttribute, uint16_t, 2>;
-
 enum class DelimiterClass
 {
     ControlChar,
@@ -153,8 +148,8 @@ public:
     void ReplaceText(RowWriteState& state);
     void CopyTextFrom(RowCopyTextFromState& state);
 
-    RowAttributes& Attributes() noexcept;
-    const RowAttributes& Attributes() const noexcept;
+    til::small_rle<TextAttribute, uint16_t, 1>& Attributes() noexcept;
+    const til::small_rle<TextAttribute, uint16_t, 1>& Attributes() const noexcept;
     TextAttribute GetAttrByColumn(til::CoordType column) const;
     std::vector<uint16_t> GetHyperlinks() const;
     ImageSlice* SetImageSlice(ImageSlice::Pointer imageSlice) noexcept;
@@ -302,7 +297,7 @@ private:
     std::span<uint16_t> _charOffsets;
     // _attr is a run-length-encoded vector of TextAttribute with a decompressed
     // length equal to _columnCount (= 1 TextAttribute per column).
-    RowAttributes _attr;
+    til::small_rle<TextAttribute, uint16_t, 1> _attr;
     // The width of the row in visual columns.
     uint16_t _columnCount = 0;
     // Stores double-width/height (DECSWL/DECDWL/DECDHL) attributes.

src/buffer/out/textBuffer.cpp

@@ -1917,6 +1917,41 @@ std::wstring TextBuffer::GetPlainText(const CopyRequest& req) const
     return selectedText;
 }
 
+// Retrieves the text data from the buffer *with* ANSI escape code control sequences and presents it in
+//      a clipboard-ready format.
+// Arguments:
+// - req - the copy request having the bounds of the selected region and other related configuration flags.
+// Return Value:
+// - The text and control sequence data from the selected region of the text buffer. Empty if the copy request
+//      is invalid.
+std::wstring TextBuffer::GetWithControlSequences(const CopyRequest& req) const
+{
+    if (req.beg > req.end)
+    {
+        return {};
+    }
+
+    std::wstring selectedText;
+    std::optional<TextAttribute> previousTextAttr;
+    bool delayedLineBreak = false;
+
+    const auto firstRow = req.beg.y;
+    const auto lastRow = req.end.y;
+
+    for (til::CoordType currentRow = firstRow; currentRow <= lastRow; currentRow++)
+    {
+        const auto& row = GetRowByOffset(currentRow);
+
+        const auto [startX, endX, reqAddLineBreak] = _RowCopyHelper(req, currentRow, row);
+        const bool isLastRow = currentRow == lastRow;
+        const bool addLineBreak = reqAddLineBreak && !isLastRow;
+
+        _SerializeRow(row, startX, endX, addLineBreak, isLastRow, selectedText, previousTextAttr, delayedLineBreak);
+    }
+
+    return selectedText;
+}
+
 // Routine Description:
 // - Generates a CF_HTML compliant structure from the selected region of the buffer
 // Arguments:
@@ -2348,7 +2383,7 @@ void TextBuffer::_AppendRTFText(std::string& contentBuilder, const std::wstring_
     }
 }
 
-void TextBuffer::Serialize(const wchar_t* destination) const
+void TextBuffer::SerializeToPath(const wchar_t* destination) const
 {
     const wil::unique_handle file{ CreateFileW(destination, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_DELETE, nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr) };
     THROW_LAST_ERROR_IF(!file);
@@ -2358,268 +2393,26 @@ void TextBuffer::Serialize(const wchar_t* destination) const
     buffer.reserve(writeThreshold + writeThreshold / 2);
     buffer.push_back(L'\uFEFF');
 
-    const til::CoordType lastRowWithText = GetLastNonSpaceCharacter(nullptr).y;
-    CharacterAttributes previousAttr = CharacterAttributes::Unused1;
-    TextColor previousFg;
-    TextColor previousBg;
-    TextColor previousUl;
-    uint16_t previousHyperlinkId = 0;
+    std::optional<TextAttribute> previousTextAttr;
     bool delayedLineBreak = false;
 
+    const til::CoordType firstRow = 0;
+    const til::CoordType lastRow = GetLastNonSpaceCharacter(nullptr).y;
+
     // This iterates through each row. The exit condition is at the end
     // of the for() loop so that we can properly handle file flushing.
-    for (til::CoordType currentRow = 0;; currentRow++)
+    for (til::CoordType currentRow = firstRow;; currentRow++)
     {
         const auto& row = GetRowByOffset(currentRow);
 
-        if (const auto lr = row.GetLineRendition(); lr != LineRendition::SingleWidth)
-        {
-            static constexpr std::wstring_view mappings[] = {
-                L"\x1b#6", // LineRendition::DoubleWidth
-                L"\x1b#3", // LineRendition::DoubleHeightTop
-                L"\x1b#4", // LineRendition::DoubleHeightBottom
-            };
-            const auto idx = std::clamp(static_cast<int>(lr) - 1, 0, 2);
-            buffer.append(til::at(mappings, idx));
-        }
+        const auto isLastRow = currentRow == lastRow;
+        const auto startX = 0;
+        const auto endX = row.GetReadableColumnCount();
+        const bool addLineBreak = !row.WasWrapForced() || isLastRow;
 
-        const auto& runs = row.Attributes().runs();
-        const auto beg = runs.begin();
-        const auto end = runs.end();
-        auto it = beg;
-        const auto last = end - 1;
-        const auto lastCharX = row.MeasureRight();
-        til::CoordType oldX = 0;
+        _SerializeRow(row, startX, endX, addLineBreak, isLastRow, buffer, previousTextAttr, delayedLineBreak);
 
-        for (; it != end; ++it)
-        {
-            const auto attr = it->value.GetCharacterAttributes();
-            const auto hyperlinkId = it->value.GetHyperlinkId();
-            const auto fg = it->value.GetForeground();
-            const auto bg = it->value.GetBackground();
-            const auto ul = it->value.GetUnderlineColor();
-
-            if (previousAttr != attr)
-            {
-                auto attrDelta = attr ^ previousAttr;
-
-                // There's no escape sequence that only turns off either bold/intense or dim/faint. SGR 22 turns off both.
-                // This results in two issues in our generic "Mapping" code below. Assuming, both Intense and Faint were on...
-                // * ...and either turned off, it would emit SGR 22 which turns both attributes off = Wrong.
-                // * ...and both are now off, it would emit SGR 22 twice.
-                //
-                // This extra branch takes care of both issues. If both attributes turned off it'll emit a single \x1b[22m,
-                // if faint turned off \x1b[22;1m (intense is still on), and \x1b[22;2m if intense turned off (vice versa).
-                if (WI_AreAllFlagsSet(previousAttr, CharacterAttributes::Intense | CharacterAttributes::Faint) &&
-                    WI_IsAnyFlagSet(attrDelta, CharacterAttributes::Intense | CharacterAttributes::Faint))
-                {
-                    wchar_t buf[8] = L"\x1b[22m";
-                    size_t len = 5;
-
-                    if (WI_IsAnyFlagSet(attr, CharacterAttributes::Intense | CharacterAttributes::Faint))
-                    {
-                        buf[4] = L';';
-                        buf[5] = WI_IsAnyFlagSet(attr, CharacterAttributes::Intense) ? L'1' : L'2';
-                        buf[6] = L'm';
-                        len = 7;
-                    }
-
-                    buffer.append(&buf[0], len);
-                    WI_ClearAllFlags(attrDelta, CharacterAttributes::Intense | CharacterAttributes::Faint);
-                }
-
-                {
-                    struct Mapping
-                    {
-                        CharacterAttributes attr;
-                        uint8_t change[2]; // [0] = off, [1] = on
-                    };
-                    static constexpr Mapping mappings[] = {
-                        { CharacterAttributes::Intense, { 22, 1 } },
-                        { CharacterAttributes::Italics, { 23, 3 } },
-                        { CharacterAttributes::Blinking, { 25, 5 } },
-                        { CharacterAttributes::Invisible, { 28, 8 } },
-                        { CharacterAttributes::CrossedOut, { 29, 9 } },
-                        { CharacterAttributes::Faint, { 22, 2 } },
-                        { CharacterAttributes::TopGridline, { 55, 53 } },
-                        { CharacterAttributes::ReverseVideo, { 27, 7 } },
-                    };
-                    for (const auto& mapping : mappings)
-                    {
-                        if (WI_IsAnyFlagSet(attrDelta, mapping.attr))
-                        {
-                            const auto n = til::at(mapping.change, WI_IsAnyFlagSet(attr, mapping.attr));
-                            fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[{}m"), n);
-                        }
-                    }
-                }
-
-                if (WI_IsAnyFlagSet(attrDelta, CharacterAttributes::UnderlineStyle))
-                {
-                    static constexpr std::wstring_view mappings[] = {
-                        L"\x1b[24m", // UnderlineStyle::NoUnderline
-                        L"\x1b[4m", // UnderlineStyle::SinglyUnderlined
-                        L"\x1b[21m", // UnderlineStyle::DoublyUnderlined
-                        L"\x1b[4:3m", // UnderlineStyle::CurlyUnderlined
-                        L"\x1b[4:4m", // UnderlineStyle::DottedUnderlined
-                        L"\x1b[4:5m", // UnderlineStyle::DashedUnderlined
-                    };
-
-                    auto idx = WI_EnumValue(it->value.GetUnderlineStyle());
-                    if (idx >= std::size(mappings))
-                    {
-                        idx = 1; // UnderlineStyle::SinglyUnderlined
-                    }
-
-                    buffer.append(til::at(mappings, idx));
-                }
-
-                previousAttr = attr;
-            }
-
-            if (previousFg != fg)
-            {
-                switch (fg.GetType())
-                {
-                case ColorType::IsDefault:
-                    buffer.append(L"\x1b[39m");
-                    break;
-                case ColorType::IsIndex16:
-                {
-                    uint8_t index = WI_IsFlagSet(fg.GetIndex(), 8) ? 90 : 30;
-                    index += fg.GetIndex() & 7;
-                    fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[{}m"), index);
-                    break;
-                }
-                case ColorType::IsIndex256:
-                    fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[38;5;{}m"), fg.GetIndex());
-                    break;
-                case ColorType::IsRgb:
-                    fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[38;2;{};{};{}m"), fg.GetR(), fg.GetG(), fg.GetB());
-                    break;
-                default:
-                    break;
-                }
-                previousFg = fg;
-            }
-
-            if (previousBg != bg)
-            {
-                switch (bg.GetType())
-                {
-                case ColorType::IsDefault:
-                    buffer.append(L"\x1b[49m");
-                    break;
-                case ColorType::IsIndex16:
-                {
-                    uint8_t index = WI_IsFlagSet(bg.GetIndex(), 8) ? 100 : 40;
-                    index += bg.GetIndex() & 7;
-                    fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[{}m"), index);
-                    break;
-                }
-                case ColorType::IsIndex256:
-                    fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[48;5;{}m"), bg.GetIndex());
-                    break;
-                case ColorType::IsRgb:
-                    fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[48;2;{};{};{}m"), bg.GetR(), bg.GetG(), bg.GetB());
-                    break;
-                default:
-                    break;
-                }
-                previousBg = bg;
-            }
-
-            if (previousUl != ul)
-            {
-                switch (fg.GetType())
-                {
-                case ColorType::IsDefault:
-                    buffer.append(L"\x1b[59m");
-                    break;
-                case ColorType::IsIndex256:
-                    fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[58:5:{}m"), ul.GetIndex());
-                    break;
-                case ColorType::IsRgb:
-                    fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[58:2::{}:{}:{}m"), ul.GetR(), ul.GetG(), ul.GetB());
-                    break;
-                default:
-                    break;
-                }
-                previousUl = ul;
-            }
-
-            if (previousHyperlinkId != hyperlinkId)
-            {
-                if (hyperlinkId)
-                {
-                    const auto uri = GetHyperlinkUriFromId(hyperlinkId);
-                    if (!uri.empty())
-                    {
-                        buffer.append(L"\x1b]8;;");
-                        buffer.append(uri);
-                        buffer.append(L"\x1b\\");
-                        previousHyperlinkId = hyperlinkId;
-                    }
-                }
-                else
-                {
-                    buffer.append(L"\x1b]8;;\x1b\\");
-                    previousHyperlinkId = 0;
-                }
-            }
-
-            // Initially, the buffer is initialized with the default attributes, but once it begins to scroll,
-            // newly scrolled in rows are initialized with the current attributes. This means we need to set
-            // the current attributes to those of the upcoming row before the row comes up. Or inversely:
-            // We let the row come up, let it set its attributes and only then print the newline.
-            if (delayedLineBreak)
-            {
-                buffer.append(L"\r\n");
-                delayedLineBreak = false;
-            }
-
-            auto newX = oldX + it->length;
-
-            // Since our text buffer doesn't store the original input text, the information over the amount of trailing
-            // whitespaces was lost. If we don't do anything here then a row that just says "Hello" would be serialized
-            // to "Hello                    ...". If the user restores the buffer dump with a different window size,
-            // this would result in some fairly ugly reflow. This code attempts to at least trim trailing whitespaces.
-            //
-            // As mentioned above for `delayedLineBreak`, rows are initialized with their first attribute, BUT
-            // only if the viewport has begun to scroll. Otherwise, they're initialized with the default attributes.
-            // In other words, we can only skip \x1b[K = Erase in Line, if both the first/last attribute are the default attribute.
-            static constexpr TextAttribute defaultAttr;
-            const auto trimTrailingWhitespaces = it == last && lastCharX < newX;
-            const auto clearToEndOfLine = trimTrailingWhitespaces && (beg->value != defaultAttr || last->value != defaultAttr);
-
-            if (trimTrailingWhitespaces)
-            {
-                newX = lastCharX;
-            }
-
-            buffer.append(row.GetText(oldX, newX));
-
-            if (clearToEndOfLine)
-            {
-                buffer.append(L"\x1b[K");
-            }
-
-            oldX = newX;
-        }
-
-        const auto moreRowsRemaining = currentRow < lastRowWithText;
-        delayedLineBreak = !row.WasWrapForced();
-
-        if (!moreRowsRemaining)
-        {
-            if (previousHyperlinkId)
-            {
-                buffer.append(L"\x1b]8;;\x1b\\");
-            }
-            buffer.append(L"\x1b[m\r\n");
-        }
-
-        if (buffer.size() >= writeThreshold || !moreRowsRemaining)
+        if (buffer.size() >= writeThreshold || isLastRow)
         {
             const auto fileSize = gsl::narrow<DWORD>(buffer.size() * sizeof(wchar_t));
             DWORD bytesWritten = 0;
@@ -2628,13 +2421,294 @@ void TextBuffer::Serialize(const wchar_t* destination) const
             buffer.clear();
         }
 
-        if (!moreRowsRemaining)
+        if (isLastRow)
         {
             break;
         }
     }
 }
 
+// Serializes one row of the text buffer including ANSI escape code control sequences.
+// Arguments:
+// - row - A reference to the row being serialized.
+// - startX - The first column (inclusive) to include in the serialized content.
+// - endX - The last column (exclusive) to include in the serialized content.
+// - addLineBreak - Whether to add a line break at the end of the serialized row.
+// - isLastRow - Whether this is the final row to be serialized.
+// - buffer - A string to write the serialized row into.
+// - previousTextAttr - Used for tracking state across multiple calls to `_SerializeRow` for sequential rows.
+//      The value will be mutated by the call. The initial call should contain `nullopt`, and subsequent calls
+//      should pass the value that was written by the previous call.
+// - delayedLineBreak - Similarly used for tracking state across multiple calls, and similarly will be mutated
+//      by the call. The initial call should pass `false` and subsequent calls should pass the value that was
+//      written by the previous call.
+void TextBuffer::_SerializeRow(const ROW& row, const til::CoordType startX, const til::CoordType endX, const bool addLineBreak, const bool isLastRow, std::wstring& buffer, std::optional<TextAttribute>& previousTextAttr, bool& delayedLineBreak) const
+{
+    if (const auto lr = row.GetLineRendition(); lr != LineRendition::SingleWidth)
+    {
+        static constexpr std::wstring_view mappings[] = {
+            L"\x1b#6", // LineRendition::DoubleWidth
+            L"\x1b#3", // LineRendition::DoubleHeightTop
+            L"\x1b#4", // LineRendition::DoubleHeightBottom
+        };
+        const auto idx = std::clamp(static_cast<int>(lr) - 1, 0, 2);
+        buffer.append(til::at(mappings, idx));
+    }
+
+    const auto startXU16 = gsl::narrow_cast<uint16_t>(startX);
+    const auto endXU16 = gsl::narrow_cast<uint16_t>(endX);
+    const auto runs = row.Attributes().slice(startXU16, endXU16).runs();
+
+    const auto beg = runs.begin();
+    const auto end = runs.end();
+    auto it = beg;
+    // Don't try to get `end - 1` if it's an empty iterator; in this case we're going to ignore the `last`
+    // value anyway so just use `end`.
+    const auto last = it == end ? end : end - 1;
+    const auto lastCharX = row.MeasureRight();
+    til::CoordType oldX = startX;
+
+    for (; it != end; ++it)
+    {
+        const auto effectivePreviousTextAttr = previousTextAttr.value_or(TextAttribute{ CharacterAttributes::Unused1, TextColor{}, TextColor{}, 0, TextColor{} });
+        const auto previousAttr = effectivePreviousTextAttr.GetCharacterAttributes();
+        const auto previousHyperlinkId = effectivePreviousTextAttr.GetHyperlinkId();
+        const auto previousFg = effectivePreviousTextAttr.GetForeground();
+        const auto previousBg = effectivePreviousTextAttr.GetBackground();
+        const auto previousUl = effectivePreviousTextAttr.GetUnderlineColor();
+
+        const auto attr = it->value.GetCharacterAttributes();
+        const auto hyperlinkId = it->value.GetHyperlinkId();
+        const auto fg = it->value.GetForeground();
+        const auto bg = it->value.GetBackground();
+        const auto ul = it->value.GetUnderlineColor();
+
+        if (previousAttr != attr)
+        {
+            auto attrDelta = attr ^ previousAttr;
+
+            // There's no escape sequence that only turns off either bold/intense or dim/faint. SGR 22 turns off both.
+            // This results in two issues in our generic "Mapping" code below. Assuming, both Intense and Faint were on...
+            // * ...and either turned off, it would emit SGR 22 which turns both attributes off = Wrong.
+            // * ...and both are now off, it would emit SGR 22 twice.
+            //
+            // This extra branch takes care of both issues. If both attributes turned off it'll emit a single \x1b[22m,
+            // if faint turned off \x1b[22;1m (intense is still on), and \x1b[22;2m if intense turned off (vice versa).
+            if (WI_AreAllFlagsSet(previousAttr, CharacterAttributes::Intense | CharacterAttributes::Faint) &&
+                WI_IsAnyFlagSet(attrDelta, CharacterAttributes::Intense | CharacterAttributes::Faint))
+            {
+                wchar_t buf[8] = L"\x1b[22m";
+                size_t len = 5;
+
+                if (WI_IsAnyFlagSet(attr, CharacterAttributes::Intense | CharacterAttributes::Faint))
+                {
+                    buf[4] = L';';
+                    buf[5] = WI_IsAnyFlagSet(attr, CharacterAttributes::Intense) ? L'1' : L'2';
+                    buf[6] = L'm';
+                    len = 7;
+                }
+
+                buffer.append(&buf[0], len);
+                WI_ClearAllFlags(attrDelta, CharacterAttributes::Intense | CharacterAttributes::Faint);
+            }
+
+            {
+                struct Mapping
+                {
+                    CharacterAttributes attr;
+                    uint8_t change[2]; // [0] = off, [1] = on
+                };
+                static constexpr Mapping mappings[] = {
+                    { CharacterAttributes::Intense, { 22, 1 } },
+                    { CharacterAttributes::Italics, { 23, 3 } },
+                    { CharacterAttributes::Blinking, { 25, 5 } },
+                    { CharacterAttributes::Invisible, { 28, 8 } },
+                    { CharacterAttributes::CrossedOut, { 29, 9 } },
+                    { CharacterAttributes::Faint, { 22, 2 } },
+                    { CharacterAttributes::TopGridline, { 55, 53 } },
+                    { CharacterAttributes::ReverseVideo, { 27, 7 } },
+                };
+                for (const auto& mapping : mappings)
+                {
+                    if (WI_IsAnyFlagSet(attrDelta, mapping.attr))
+                    {
+                        const auto n = til::at(mapping.change, WI_IsAnyFlagSet(attr, mapping.attr));
+                        fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[{}m"), n);
+                    }
+                }
+            }
+
+            if (WI_IsAnyFlagSet(attrDelta, CharacterAttributes::UnderlineStyle))
+            {
+                static constexpr std::wstring_view mappings[] = {
+                    L"\x1b[24m", // UnderlineStyle::NoUnderline
+                    L"\x1b[4m", // UnderlineStyle::SinglyUnderlined
+                    L"\x1b[21m", // UnderlineStyle::DoublyUnderlined
+                    L"\x1b[4:3m", // UnderlineStyle::CurlyUnderlined
+                    L"\x1b[4:4m", // UnderlineStyle::DottedUnderlined
+                    L"\x1b[4:5m", // UnderlineStyle::DashedUnderlined
+                };
+
+                auto idx = WI_EnumValue(it->value.GetUnderlineStyle());
+                if (idx >= std::size(mappings))
+                {
+                    idx = 1; // UnderlineStyle::SinglyUnderlined
+                }
+
+                buffer.append(til::at(mappings, idx));
+            }
+        }
+
+        if (previousFg != fg)
+        {
+            switch (fg.GetType())
+            {
+            case ColorType::IsDefault:
+                buffer.append(L"\x1b[39m");
+                break;
+            case ColorType::IsIndex16:
+            {
+                uint8_t index = WI_IsFlagSet(fg.GetIndex(), 8) ? 90 : 30;
+                index += fg.GetIndex() & 7;
+                fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[{}m"), index);
+                break;
+            }
+            case ColorType::IsIndex256:
+                fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[38;5;{}m"), fg.GetIndex());
+                break;
+            case ColorType::IsRgb:
+                fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[38;2;{};{};{}m"), fg.GetR(), fg.GetG(), fg.GetB());
+                break;
+            default:
+                break;
+            }
+        }
+
+        if (previousBg != bg)
+        {
+            switch (bg.GetType())
+            {
+            case ColorType::IsDefault:
+                buffer.append(L"\x1b[49m");
+                break;
+            case ColorType::IsIndex16:
+            {
+                uint8_t index = WI_IsFlagSet(bg.GetIndex(), 8) ? 100 : 40;
+                index += bg.GetIndex() & 7;
+                fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[{}m"), index);
+                break;
+            }
+            case ColorType::IsIndex256:
+                fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[48;5;{}m"), bg.GetIndex());
+                break;
+            case ColorType::IsRgb:
+                fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[48;2;{};{};{}m"), bg.GetR(), bg.GetG(), bg.GetB());
+                break;
+            default:
+                break;
+            }
+        }
+
+        if (previousUl != ul)
+        {
+            switch (fg.GetType())
+            {
+            case ColorType::IsDefault:
+                buffer.append(L"\x1b[59m");
+                break;
+            case ColorType::IsIndex256:
+                fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[58:5:{}m"), ul.GetIndex());
+                break;
+            case ColorType::IsRgb:
+                fmt::format_to(std::back_inserter(buffer), FMT_COMPILE(L"\x1b[58:2::{}:{}:{}m"), ul.GetR(), ul.GetG(), ul.GetB());
+                break;
+            default:
+                break;
+            }
+        }
+
+        if (previousHyperlinkId != hyperlinkId)
+        {
+            if (hyperlinkId)
+            {
+                const auto uri = GetHyperlinkUriFromId(hyperlinkId);
+                if (!uri.empty())
+                {
+                    buffer.append(L"\x1b]8;;");
+                    buffer.append(uri);
+                    buffer.append(L"\x1b\\");
+                }
+            }
+            else
+            {
+                buffer.append(L"\x1b]8;;\x1b\\");
+            }
+        }
+
+        previousTextAttr = it->value;
+
+        // Initially, the buffer is initialized with the default attributes, but once it begins to scroll,
+        // newly scrolled in rows are initialized with the current attributes. This means we need to set
+        // the current attributes to those of the upcoming row before the row comes up. Or inversely:
+        // We let the row come up, let it set its attributes and only then print the newline.
+        if (delayedLineBreak)
+        {
+            buffer.append(L"\r\n");
+            delayedLineBreak = false;
+        }
+
+        auto newX = oldX + it->length;
+
+        // Since our text buffer doesn't store the original input text, the information over the amount of trailing
+        // whitespaces was lost. If we don't do anything here then a row that just says "Hello" would be serialized
+        // to "Hello                    ...". If the user restores the buffer dump with a different window size,
+        // this would result in some fairly ugly reflow. This code attempts to at least trim trailing whitespaces.
+        //
+        // As mentioned above for `delayedLineBreak`, rows are initialized with their first attribute, BUT
+        // only if the viewport has begun to scroll. Otherwise, they're initialized with the default attributes.
+        // In other words, we can only skip \x1b[K = Erase in Line, if both the first/last attribute are the default attribute.
+        static constexpr TextAttribute defaultAttr;
+        const auto trimTrailingWhitespaces = it == last && lastCharX < newX;
+        const auto clearToEndOfLine = trimTrailingWhitespaces && (beg->value != defaultAttr || last->value != defaultAttr);
+
+        if (trimTrailingWhitespaces)
+        {
+            newX = lastCharX;
+        }
+
+        buffer.append(row.GetText(oldX, newX));
+
+        if (clearToEndOfLine)
+        {
+            buffer.append(L"\x1b[K");
+        }
+
+        oldX = newX;
+    }
+
+    // Handle empty rows (with no runs). See above for more details about `delayedLineBreak`.
+    if (delayedLineBreak)
+    {
+        buffer.append(L"\r\n");
+        delayedLineBreak = false;
+    }
+
+    delayedLineBreak = !row.WasWrapForced() && addLineBreak;
+
+    if (isLastRow)
+    {
+        if (previousTextAttr.has_value() && previousTextAttr->GetHyperlinkId())
+        {
+            buffer.append(L"\x1b]8;;\x1b\\");
+        }
+        buffer.append(L"\x1b[0m");
+        if (addLineBreak)
+        {
+            buffer.append(L"\r\n");
+        }
+    }
+}
+
 // Function Description:
 // - Reflow the contents from the old buffer into the new buffer. The new buffer
 //   can have different dimensions than the old buffer. If it does, then this

src/buffer/out/textBuffer.hpp

@@ -266,6 +266,8 @@ public:
 
     std::wstring GetPlainText(const CopyRequest& req) const;
 
+    std::wstring GetWithControlSequences(const CopyRequest& req) const;
+
     std::string GenHTML(const CopyRequest& req,
                         const int fontHeightPoints,
                         const std::wstring_view fontFaceName,
@@ -280,7 +282,7 @@ public:
                        const bool isIntenseBold,
                        std::function<std::tuple<COLORREF, COLORREF, COLORREF>(const TextAttribute&)> GetAttributeColors) const noexcept;
 
-    void Serialize(const wchar_t* destination) const;
+    void SerializeToPath(const wchar_t* destination) const;
 
     struct PositionInformation
     {
@@ -332,6 +334,8 @@ private:
 
     std::tuple<til::CoordType, til::CoordType, bool> _RowCopyHelper(const CopyRequest& req, const til::CoordType iRow, const ROW& row) const;
 
+    void _SerializeRow(const ROW& row, const til::CoordType startX, const til::CoordType endX, const bool addLineBreak, const bool isLastRow, std::wstring& buffer, std::optional<TextAttribute>& previousTextAttr, bool& delayedLineBreak) const;
+
     static void _AppendRTFText(std::string& contentBuilder, const std::wstring_view& text);
 
     Microsoft::Console::Render::Renderer* _renderer = nullptr;

src/cascadia/CascadiaPackage/Package-Can.appxmanifest

@@ -38,7 +38,7 @@
   </Properties>
 
   <Dependencies>
-    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.19041.0" MaxVersionTested="10.0.26100.0" />
+    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.19041.0" MaxVersionTested="10.0.22621.0" />
   </Dependencies>
 
   <Resources>

src/cascadia/CascadiaPackage/Package-Dev.appxmanifest

@@ -38,7 +38,7 @@
   </Properties>
 
   <Dependencies>
-    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.19041.0" MaxVersionTested="10.0.26100.0" />
+    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.19041.0" MaxVersionTested="10.0.22621.0" />
   </Dependencies>
 
   <Resources>

src/cascadia/CascadiaPackage/Package-Pre.appxmanifest

@@ -39,7 +39,7 @@
   </Properties>
 
   <Dependencies>
-    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.19041.0" MaxVersionTested="10.0.26100.0" />
+    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.19041.0" MaxVersionTested="10.0.22621.0" />
   </Dependencies>
 
   <Resources>

src/cascadia/CascadiaPackage/Package.appxmanifest

@@ -39,7 +39,7 @@
   </Properties>
 
   <Dependencies>
-    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.19041.0" MaxVersionTested="10.0.26100.0" />
+    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.19041.0" MaxVersionTested="10.0.22621.0" />
   </Dependencies>
 
   <Resources>

src/cascadia/ElevateShim/elevate-shim.vcxproj

@@ -7,7 +7,6 @@
     <ProjectName>elevate-shim</ProjectName>
     <TargetName>elevate-shim</TargetName>
     <ConfigurationType>Application</ConfigurationType>
-    <VersionInfoFileDescription>Windows Terminal Administrator Launch Helper</VersionInfoFileDescription>
   </PropertyGroup>
 
   <Import Project="..\..\..\common.openconsole.props" Condition="'$(OpenConsoleDir)'==''" />

src/cascadia/ShellExtension/WindowsTerminalShellExt.vcxproj

@@ -10,7 +10,6 @@
     <SubSystem>Console</SubSystem>
     <!-- suppress a bunch of Windows Universal properties from cppwinrt.props -->
     <OpenConsoleUniversalApp>false</OpenConsoleUniversalApp>
-    <VersionInfoFileDescription>Windows Terminal Open Here Shell Extension</VersionInfoFileDescription>
   </PropertyGroup>
   <PropertyGroup Label="NuGet Dependencies">
     <TerminalCppWinrt>true</TerminalCppWinrt>

src/cascadia/TerminalApp/AppActionHandlers.cpp

@@ -118,7 +118,7 @@ namespace winrt::TerminalApp::implementation
     void TerminalPage::_HandleCloseWindow(const IInspectable& /*sender*/,
                                           const ActionEventArgs& args)
     {
-        CloseWindow();
+        CloseRequested.raise(nullptr, nullptr);
         args.Handled(true);
     }
 
@@ -548,7 +548,7 @@ namespace winrt::TerminalApp::implementation
     {
         if (const auto& realArgs = args.ActionArgs().try_as<CopyTextArgs>())
         {
-            const auto handled = _CopyText(realArgs.DismissSelection(), realArgs.SingleLine(), realArgs.CopyFormatting());
+            const auto handled = _CopyText(realArgs.DismissSelection(), realArgs.SingleLine(), realArgs.WithControlSequences(), realArgs.CopyFormatting());
             args.Handled(handled);
         }
     }

src/cascadia/TerminalApp/AppLogic.cpp

@@ -83,6 +83,8 @@ static winrt::hstring _GetErrorText(SettingsLoadErrors error)
     return _GetMessageText(static_cast<uint32_t>(error), settingsLoadErrorsLabels);
 }
 
+static constexpr std::wstring_view StartupTaskName = L"StartTerminalOnLoginTask";
+
 namespace winrt::TerminalApp::implementation
 {
     // Function Description:
@@ -335,16 +337,8 @@ namespace winrt::TerminalApp::implementation
     void AppLogic::_ApplyLanguageSettingChange() noexcept
     try
     {
-        const auto language = _settings.GlobalSettings().Language();
-
         if (!IsPackaged())
         {
-            if (!language.empty())
-            {
-                // We cannot use the packaged app API, PrimaryLanguageOverride, but we *can* tell the resource loader
-                // to set the Language for all loaded resources to the user's preferred language.
-                winrt::Windows::ApplicationModel::Resources::Core::ResourceContext::SetGlobalQualifierValue(L"Language", language);
-            }
             return;
         }
 
@@ -352,6 +346,8 @@ namespace winrt::TerminalApp::implementation
 
         // NOTE: PrimaryLanguageOverride throws if this instance is unpackaged.
         const auto primaryLanguageOverride = ApplicationLanguages::PrimaryLanguageOverride();
+        const auto language = _settings.GlobalSettings().Language();
+
         if (primaryLanguageOverride != language)
         {
             ApplicationLanguages::PrimaryLanguageOverride(language);
@@ -359,6 +355,40 @@ namespace winrt::TerminalApp::implementation
     }
     CATCH_LOG()
 
+    safe_void_coroutine AppLogic::_ApplyStartupTaskStateChange()
+    try
+    {
+        // First, make sure we're running in a packaged context. This method
+        // won't work, and will crash mysteriously if we're running unpackaged.
+        if (!IsPackaged())
+        {
+            co_return;
+        }
+
+        const auto tryEnableStartupTask = _settings.GlobalSettings().StartOnUserLogin();
+        const auto task = co_await StartupTask::GetAsync(StartupTaskName);
+
+        switch (task.State())
+        {
+        case StartupTaskState::Disabled:
+            if (tryEnableStartupTask)
+            {
+                co_await task.RequestEnableAsync();
+            }
+            break;
+        case StartupTaskState::DisabledByUser:
+            // TODO: GH#6254: define UX for other StartupTaskStates
+            break;
+        case StartupTaskState::Enabled:
+            if (!tryEnableStartupTask)
+            {
+                task.Disable();
+            }
+            break;
+        }
+    }
+    CATCH_LOG();
+
     // Method Description:
     // - Reloads the settings from the settings.json file.
     // - When this is called the first time, this initializes our settings. See
@@ -396,7 +426,7 @@ namespace winrt::TerminalApp::implementation
                 auto ev = winrt::make_self<SettingsLoadEventArgs>(true,
                                                                   static_cast<uint64_t>(_settingsLoadedResult),
                                                                   _settingsLoadExceptionText,
-                                                                  warnings.GetView(),
+                                                                  warnings,
                                                                   _settings);
                 SettingsChanged.raise(*this, *ev);
                 return;
@@ -418,6 +448,7 @@ namespace winrt::TerminalApp::implementation
         // TerminalSettings object.
 
         _ApplyLanguageSettingChange();
+        _ApplyStartupTaskStateChange();
         _ProcessLazySettingsChanges();
 
         auto warnings{ winrt::multi_threaded_vector<SettingsLoadWarnings>() };
@@ -428,7 +459,7 @@ namespace winrt::TerminalApp::implementation
         auto ev = winrt::make_self<SettingsLoadEventArgs>(!initialLoad,
                                                           _settingsLoadedResult,
                                                           _settingsLoadExceptionText,
-                                                          warnings.GetView(),
+                                                          warnings,
                                                           _settings);
         SettingsChanged.raise(*this, *ev);
     }
@@ -444,6 +475,7 @@ namespace winrt::TerminalApp::implementation
         // Both LoadSettings and ReloadSettings are supposed to call this function,
         // but LoadSettings skips it, so that the UI starts up faster.
         // Now that the UI is present we can do them with a less significant UX impact.
+        _ApplyStartupTaskStateChange();
         _ProcessLazySettingsChanges();
 
         FILETIME creationTime, exitTime, kernelTime, userTime, now;
@@ -656,7 +688,7 @@ namespace winrt::TerminalApp::implementation
         auto ev = winrt::make_self<SettingsLoadEventArgs>(false,
                                                           _settingsLoadedResult,
                                                           _settingsLoadExceptionText,
-                                                          warnings.GetView(),
+                                                          warnings,
                                                           _settings);
 
         auto window = winrt::make_self<implementation::TerminalWindow>(*ev, _contentManager);

src/cascadia/TerminalApp/AppLogic.h

@@ -103,6 +103,7 @@ namespace winrt::TerminalApp::implementation
                                                                        const Microsoft::Terminal::Settings::Model::WindowingMode& windowingBehavior);
 
         void _ApplyLanguageSettingChange() noexcept;
+        safe_void_coroutine _ApplyStartupTaskStateChange();
 
         [[nodiscard]] HRESULT _TryLoadSettings() noexcept;
         void _ProcessLazySettingsChanges();

src/cascadia/TerminalApp/CommandPalette.cpp

@@ -359,7 +359,7 @@ namespace winrt::TerminalApp::implementation
             _switchToMode(CommandPaletteMode::CommandlineMode);
             e.Handled(true);
         }
-        else if ((key == VirtualKey::C || key == VirtualKey::Insert) && ctrlDown)
+        else if (key == VirtualKey::C && ctrlDown)
         {
             _searchBox().CopySelectionToClipboard();
             e.Handled(true);

src/cascadia/TerminalApp/DebugTapConnection.cpp

@@ -60,12 +60,9 @@ namespace winrt::Microsoft::TerminalApp::implementation
 
     DebugTapConnection::DebugTapConnection(ITerminalConnection wrappedConnection)
     {
-        _outputRevoker = wrappedConnection.TerminalOutput(winrt::auto_revoke, { get_weak(), &DebugTapConnection::_OutputHandler });
-        _stateChangedRevoker = wrappedConnection.StateChanged(winrt::auto_revoke, [weak = get_weak()](auto&& /*s*/, auto&& /*e*/) {
-            if (const auto self = weak.get())
-            {
-                self->StateChanged.raise(*self, nullptr);
-            }
+        _outputRevoker = wrappedConnection.TerminalOutput(winrt::auto_revoke, { this, &DebugTapConnection::_OutputHandler });
+        _stateChangedRevoker = wrappedConnection.StateChanged(winrt::auto_revoke, [this](auto&& /*s*/, auto&& /*e*/) {
+            StateChanged.raise(*this, nullptr);
         });
         _wrappedConnection = wrappedConnection;
     }

src/cascadia/TerminalApp/MarkdownPaneContent.cpp

@@ -0,0 +1,202 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+#include "pch.h"
+#include "MarkdownPaneContent.h"
+#include <LibraryResources.h>
+#include "MarkdownPaneContent.g.cpp"
+#include <til/io.h>
+
+using namespace std::chrono_literals;
+using namespace winrt::Microsoft::Terminal;
+using namespace winrt::Microsoft::Terminal::Settings;
+using namespace winrt::Microsoft::Terminal::Settings::Model;
+
+namespace winrt
+{
+    namespace MUX = Microsoft::UI::Xaml;
+    namespace WUX = Windows::UI::Xaml;
+    using IInspectable = Windows::Foundation::IInspectable;
+}
+
+namespace winrt::TerminalApp::implementation
+{
+
+    MarkdownPaneContent::MarkdownPaneContent() :
+        MarkdownPaneContent(L"") {}
+
+    MarkdownPaneContent::MarkdownPaneContent(const winrt::hstring& initialPath)
+    {
+        InitializeComponent();
+
+        FilePathInput().Text(initialPath);
+        _filePath = FilePathInput().Text();
+        _loadFile();
+    }
+
+    INewContentArgs MarkdownPaneContent::GetNewTerminalArgs(BuildStartupKind /*kind*/) const
+    {
+        return BaseContentArgs(L"x-markdown");
+    }
+
+    void MarkdownPaneContent::_clearOldNotebook()
+    {
+        RenderedMarkdown().Children().Clear();
+    }
+    void MarkdownPaneContent::_loadFile()
+    {
+        if (_filePath.empty())
+        {
+            return;
+        }
+
+        // Our title is the path of our MD file
+        TitleChanged.raise(*this, nullptr);
+
+        const std::filesystem::path filePath{ std::wstring_view{ _filePath } };
+        const auto markdownContents{ til::io::read_file_as_utf8_string_if_exists(filePath) };
+
+        Editing(false);
+        PropertyChanged.raise(*this, WUX::Data::PropertyChangedEventArgs{ L"Editing" });
+        FileContents(winrt::to_hstring(markdownContents));
+        PropertyChanged.raise(*this, WUX::Data::PropertyChangedEventArgs{ L"FileContents" });
+
+        _renderFileContents();
+    }
+    void MarkdownPaneContent::_renderFileContents()
+    {
+        // Was the file a .md file?
+        if (_filePath.ends_with(L".md"))
+        {
+            _loadMarkdown();
+        }
+        else
+        {
+            _loadText();
+        }
+    }
+    void MarkdownPaneContent::_loadText()
+    {
+        auto block = WUX::Controls::TextBlock();
+        block.IsTextSelectionEnabled(true);
+        block.FontFamily(WUX::Media::FontFamily{ L"Cascadia Code" });
+        block.Text(FileContents());
+
+        RenderedMarkdown().Children().Append(block);
+    }
+
+    void MarkdownPaneContent::_loadMarkdown()
+    {
+        auto rootTextBlock{ Microsoft::Terminal::UI::Markdown::Builder::Convert(FileContents(), _filePath) };
+
+        // By default, the markdown pane doesn't have play buttons next to the
+        // blocks. But to demonstrate how that's possible:
+        for (const auto& b : rootTextBlock.Blocks())
+        {
+            if (const auto& p{ b.try_as<WUX::Documents::Paragraph>() })
+            {
+                for (const auto& line : p.Inlines())
+                {
+                    if (const auto& otherContent{ line.try_as<WUX::Documents::InlineUIContainer>() })
+                    {
+                        if (const auto& codeBlock{ otherContent.Child().try_as<Microsoft::Terminal::UI::Markdown::CodeBlock>() })
+                        {
+                            codeBlock.PlayButtonVisibility(WUX::Visibility::Visible);
+                            codeBlock.RequestRunCommands({ this, &MarkdownPaneContent::_handleRunCommandRequest });
+                        }
+                    }
+                }
+            }
+        }
+
+        RenderedMarkdown().Children().Append(rootTextBlock);
+    }
+
+    void MarkdownPaneContent::_loadTapped(const Windows::Foundation::IInspectable&, const Windows::UI::Xaml::Input::TappedRoutedEventArgs&)
+    {
+        _filePath = FilePathInput().Text();
+        // Does the file exist? if not, bail
+        const wil::unique_handle file{ CreateFileW(_filePath.c_str(), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_DELETE, nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, nullptr) };
+        if (!file)
+        {
+            return;
+        }
+
+        // It does. Clear the old one
+        _clearOldNotebook();
+        _loadFile();
+    }
+
+    void MarkdownPaneContent::_editTapped(const Windows::Foundation::IInspectable&, const Windows::UI::Xaml::Input::TappedRoutedEventArgs&)
+    {
+        if (Editing())
+        {
+            _clearOldNotebook();
+            _renderFileContents();
+
+            EditIcon().Glyph(L"\xe932"); // Label
+
+            _scrollViewer().Visibility(WUX::Visibility::Visible);
+            _editor().Visibility(WUX::Visibility::Collapsed);
+
+            Editing(false);
+        }
+        else
+        {
+            EditIcon().Glyph(L"\xe890"); // View
+
+            _scrollViewer().Visibility(WUX::Visibility::Collapsed);
+            _editor().Visibility(WUX::Visibility::Visible);
+
+            Editing(true);
+        }
+        PropertyChanged.raise(*this, WUX::Data::PropertyChangedEventArgs{ L"Editing" });
+    }
+
+    void MarkdownPaneContent::_closeTapped(const Windows::Foundation::IInspectable&, const Windows::UI::Xaml::Input::TappedRoutedEventArgs&)
+    {
+        CloseRequested.raise(*this, nullptr);
+    }
+
+    void MarkdownPaneContent::_handleRunCommandRequest(const Microsoft::Terminal::UI::Markdown::CodeBlock& /*sender*/,
+                                                       const Microsoft::Terminal::UI::Markdown::RequestRunCommandsArgs& request)
+    {
+        auto text = request.Commandlines();
+
+        if (const auto& strongControl{ _control.get() })
+        {
+            Model::ActionAndArgs actionAndArgs{ ShortcutAction::SendInput, Model::SendInputArgs{ text } };
+
+            // By using the last active control as the sender here, the
+            // action dispatch will send this to the active control,
+            // thinking that it is the control that requested this event.
+            DispatchActionRequested.raise(strongControl, actionAndArgs);
+            strongControl.Focus(winrt::WUX::FocusState::Programmatic);
+        }
+    }
+
+#pragma region IPaneContent
+
+    winrt::Windows::UI::Xaml::FrameworkElement MarkdownPaneContent::GetRoot()
+    {
+        return *this;
+    }
+
+    void MarkdownPaneContent::Close()
+    {
+        CloseRequested.raise(*this, nullptr);
+    }
+
+    winrt::hstring MarkdownPaneContent::Icon() const
+    {
+        static constexpr std::wstring_view glyph{ L"\xe70b" }; // QuickNote
+        return winrt::hstring{ glyph };
+    }
+
+#pragma endregion
+
+    void MarkdownPaneContent::SetLastActiveControl(const Microsoft::Terminal::Control::TermControl& control)
+    {
+        _control = control;
+    }
+}

src/cascadia/TerminalApp/MarkdownPaneContent.h

@@ -0,0 +1,74 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+#pragma once
+
+#include "MarkdownPaneContent.g.h"
+#include "BasicPaneEvents.h"
+
+namespace winrt::TerminalApp::implementation
+{
+    struct MarkdownPaneContent : MarkdownPaneContentT<MarkdownPaneContent>, BasicPaneEvents
+    {
+    public:
+        MarkdownPaneContent();
+        MarkdownPaneContent(const winrt::hstring& filePath);
+
+        til::property<bool> Editing{ false };
+        til::property<winrt::hstring> FileContents{ L"" };
+
+        void SetLastActiveControl(const Microsoft::Terminal::Control::TermControl& control);
+
+        // TODO! this should just be til::property_changed_event but I don't have that commit here
+        til::event<winrt::Windows::UI::Xaml::Data::PropertyChangedEventHandler> PropertyChanged;
+
+#pragma region IPaneContent
+        winrt::Windows::UI::Xaml::FrameworkElement GetRoot();
+
+        void UpdateSettings(const winrt::Microsoft::Terminal::Settings::Model::CascadiaSettings&){};
+
+        winrt::Windows::Foundation::Size MinimumSize() { return { 1, 1 }; };
+        void Focus(winrt::Windows::UI::Xaml::FocusState reason = winrt::Windows::UI::Xaml::FocusState::Programmatic) { reason; };
+        void Close();
+        winrt::Microsoft::Terminal::Settings::Model::INewContentArgs GetNewTerminalArgs(BuildStartupKind kind) const;
+
+        winrt::hstring Title() { return _filePath; }
+        uint64_t TaskbarState() { return 0; }
+        uint64_t TaskbarProgress() { return 0; }
+        bool ReadOnly() { return false; }
+        winrt::hstring Icon() const;
+        Windows::Foundation::IReference<winrt::Windows::UI::Color> TabColor() const noexcept { return nullptr; }
+        winrt::Windows::UI::Xaml::Media::Brush BackgroundBrush() { return Background(); }
+
+        // See BasicPaneEvents for most generic event definitions
+
+#pragma endregion
+
+        til::typed_event<winrt::Windows::Foundation::IInspectable, Microsoft::Terminal::Settings::Model::ActionAndArgs> DispatchActionRequested;
+
+        void _handleRunCommandRequest(const Microsoft::Terminal::UI::Markdown::CodeBlock& sender,
+                                      const Microsoft::Terminal::UI::Markdown::RequestRunCommandsArgs& control);
+
+    private:
+        friend struct MarkdownPaneContentT<MarkdownPaneContent>; // for Xaml to bind events
+
+        winrt::hstring _filePath{};
+
+        winrt::weak_ref<Microsoft::Terminal::Control::TermControl> _control{ nullptr };
+
+        void _clearOldNotebook();
+        void _loadFile();
+        void _renderFileContents();
+        void _loadText();
+        void _loadMarkdown();
+
+        void _loadTapped(const Windows::Foundation::IInspectable& sender, const Windows::UI::Xaml::Input::TappedRoutedEventArgs& e);
+        void _editTapped(const Windows::Foundation::IInspectable& sender, const Windows::UI::Xaml::Input::TappedRoutedEventArgs& e);
+        void _closeTapped(const Windows::Foundation::IInspectable& sender, const Windows::UI::Xaml::Input::TappedRoutedEventArgs& e);
+    };
+}
+
+namespace winrt::TerminalApp::factory_implementation
+{
+    BASIC_FACTORY(MarkdownPaneContent);
+}

src/cascadia/TerminalApp/MarkdownPaneContent.idl

@@ -0,0 +1,24 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+import "IPaneContent.idl";
+import "FilteredCommand.idl";
+
+namespace TerminalApp
+{
+    [default_interface] runtimeclass MarkdownPaneContent : Windows.UI.Xaml.Controls.UserControl,
+                                                           IPaneContent,
+                                                           Windows.UI.Xaml.Data.INotifyPropertyChanged
+    {
+        MarkdownPaneContent();
+        MarkdownPaneContent(String originalPath);
+        void SetLastActiveControl(Microsoft.Terminal.Control.TermControl control);
+
+        Boolean Editing;
+        String FileContents;
+
+        event Windows.Foundation.TypedEventHandler<Object, Microsoft.Terminal.Settings.Model.ActionAndArgs> DispatchActionRequested;
+
+    }
+
+}

src/cascadia/TerminalApp/MarkdownPaneContent.xaml

@@ -0,0 +1,129 @@
+<!--
+    Copyright (c) Microsoft Corporation. All rights reserved. Licensed under
+    the MIT License. See LICENSE in the project root for license information.
+-->
+<UserControl x:Class="TerminalApp.MarkdownPaneContent"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:local="using:TerminalApp"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:mux="using:Microsoft.UI.Xaml.Controls"
+             mc:Ignorable="d">
+
+    <UserControl.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.ThemeDictionaries>
+                <!--  same as in MainPage, this is SolidBackgroundFillColorTertiary  -->
+                <ResourceDictionary x:Key="Dark">
+                    <Color x:Key="PageBackground">#282828</Color>
+                    <Color x:Key="PlayButtonHoveredColor">#90ef90</Color>
+                    <Color x:Key="PlayButtonNormalColor">#8888</Color>
+                </ResourceDictionary>
+                <ResourceDictionary x:Key="Light">
+                    <Color x:Key="PageBackground">#F9F9F9</Color>
+                    <Color x:Key="PlayButtonHoveredColor">#257f01</Color>
+                    <Color x:Key="PlayButtonNormalColor">#88222222</Color>
+                </ResourceDictionary>
+                <ResourceDictionary x:Key="HighContrast">
+                    <!--  Define resources for HighContrast mode here  -->
+                    <StaticResource x:Key="PageBackground"
+                                    ResourceKey="SystemColorWindowColorBrush" />
+                </ResourceDictionary>
+
+            </ResourceDictionary.ThemeDictionaries>
+        </ResourceDictionary>
+    </UserControl.Resources>
+
+    <Grid x:Name="Root"
+          Background="{ThemeResource PageBackground}">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" />
+            <RowDefinition Height="*" />
+        </Grid.RowDefinitions>
+
+        <Grid Grid.Row="0">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="*" />
+                <ColumnDefinition Width="Auto" />
+            </Grid.ColumnDefinitions>
+            <TextBox x:Name="FilePathInput"
+                     Grid.Column="0"
+                     Margin="4"
+                     PlaceholderText="Enter a path to a markdown file..."
+                     Text="Z:\dev\simple-test.md" />
+            <StackPanel Grid.Column="1"
+                        Orientation="Horizontal">
+                <Button Margin="4"
+                        Tapped="_loadTapped">
+                    <FontIcon FontFamily="Segoe UI, Segoe Fluent Icons, Segoe MDL2 Assets"
+                              FontSize="12"
+                              Glyph="&#xe8e5;" />
+                    <!--  OpenFile  -->
+                </Button>
+                <Button Margin="4"
+                        Tapped="_editTapped">
+                    <FontIcon x:Name="EditIcon"
+                              FontFamily="Segoe UI, Segoe Fluent Icons, Segoe MDL2 Assets"
+                              FontSize="12"
+                              Glyph="&#xe932;" />
+                    <!--  Label  -->
+                </Button>
+                <Button Margin="4"
+                        Tapped="_closeTapped">
+                    <FontIcon FontFamily="Segoe UI, Segoe Fluent Icons, Segoe MDL2 Assets"
+                              FontSize="12"
+                              Glyph="&#xe8bb;" />
+                    <!--  ChromeClose  -->
+                </Button>
+            </StackPanel>
+        </Grid>
+
+        <Grid x:Name="TabContent"
+              Grid.Row="1"
+              HorizontalAlignment="Stretch"
+              VerticalAlignment="Stretch">
+
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="0" />
+                <ColumnDefinition Width="*" />
+            </Grid.ColumnDefinitions>
+
+            <Grid x:Name="InProcContent"
+                  Grid.Column="0"
+                  Padding="16"
+                  HorizontalAlignment="Stretch"
+                  VerticalAlignment="Stretch"
+                  Background="#ff0000" />
+
+            <TextBox x:Name="_editor"
+                     Grid.Column="1"
+                     Padding="3"
+                     HorizontalAlignment="Stretch"
+                     VerticalAlignment="Stretch"
+                     AcceptsReturn="True"
+                     FontFamily="Cascadia Code"
+                     IsSpellCheckEnabled="False"
+                     Text="{x:Bind FileContents, Mode=TwoWay}"
+                     Visibility="{x:Bind Editing}" />
+
+            <ScrollViewer x:Name="_scrollViewer"
+                          Grid.Column="1"
+                          Padding="3"
+                          HorizontalAlignment="Stretch"
+                          VerticalAlignment="Stretch"
+                          Background="Transparent"
+                          BringIntoViewOnFocusChange="True"
+                          IsVerticalScrollChainingEnabled="True">
+                <StackPanel x:Name="RenderedMarkdown"
+                            Grid.Column="1"
+                            Padding="16"
+                            HorizontalAlignment="Stretch"
+                            Background="Transparent"
+                            Orientation="Vertical" />
+            </ScrollViewer>
+
+        </Grid>
+
+    </Grid>
+</UserControl>

src/cascadia/TerminalApp/Pane.cpp

@@ -697,24 +697,12 @@ bool Pane::SwapPanes(std::shared_ptr<Pane> first, std::shared_ptr<Pane> second)
         // Refocus the last pane if there was a pane focused
         if (const auto focus = first->GetActivePane())
         {
-            // GH#18184: manually focus the pane and content.
-            //           _Focus() results in no-op because the pane was _lastActive
-            focus->GotFocus.raise(focus, FocusState::Programmatic);
-            if (const auto& lastContent{ focus->GetLastFocusedContent() })
-            {
-                lastContent.Focus(FocusState::Programmatic);
-            }
+            focus->_Focus();
         }
 
         if (const auto focus = second->GetActivePane())
         {
-            // GH#18184: manually focus the pane and content.
-            //           _Focus() results in no-op because the pane was _lastActive
-            focus->GotFocus.raise(focus, FocusState::Programmatic);
-            if (const auto& lastContent{ focus->GetLastFocusedContent() })
-            {
-                lastContent.Focus(FocusState::Programmatic);
-            }
+            focus->_Focus();
         }
 
         return true;
@@ -1414,13 +1402,6 @@ void Pane::_CloseChild(const bool closeFirst)
 
         // take the control, profile, id and isDefTermSession of the pane that _wasn't_ closed.
         _setPaneContent(remainingChild->_takePaneContent());
-        if (!_content)
-        {
-            // GH#18071: our content is still null after taking the other pane's content,
-            //           so just notify our parent that we're closed.
-            Closed.raise(nullptr, nullptr);
-            return;
-        }
         _id = remainingChild->Id();
 
         // Revoke the old event handlers. Remove both the handlers for the panes

src/cascadia/TerminalApp/Resources/ja-JP/Resources.resw

@@ -206,7 +206,7 @@
     <value>ウィンドウを閉じる</value>
   </data>
   <data name="SplitTabText" xml:space="preserve">
-    <value>タブを分割</value>
+    <value>[分割] タブ</value>
   </data>
   <data name="SplitPaneText" xml:space="preserve">
     <value>ウィンドウを分割する</value>
@@ -224,7 +224,7 @@
     <value>リセット</value>
   </data>
   <data name="RenameTabText" xml:space="preserve">
-    <value>タブ名を変更</value>
+    <value>[名前の変更] タブ</value>
   </data>
   <data name="DuplicateTabText" xml:space="preserve">
     <value>タブを複製する</value>

src/cascadia/TerminalApp/SettingsLoadEventArgs.h

@@ -12,14 +12,14 @@ namespace winrt::TerminalApp::implementation
         WINRT_PROPERTY(bool, Reload, false);
         WINRT_PROPERTY(uint64_t, Result, S_OK);
         WINRT_PROPERTY(winrt::hstring, ExceptionText, L"");
-        WINRT_PROPERTY(winrt::Windows::Foundation::Collections::IVectorView<Microsoft::Terminal::Settings::Model::SettingsLoadWarnings>, Warnings, nullptr);
+        WINRT_PROPERTY(winrt::Windows::Foundation::Collections::IVector<Microsoft::Terminal::Settings::Model::SettingsLoadWarnings>, Warnings, nullptr);
         WINRT_PROPERTY(Microsoft::Terminal::Settings::Model::CascadiaSettings, NewSettings, nullptr);
 
     public:
         SettingsLoadEventArgs(bool reload,
                               uint64_t result,
                               winrt::hstring exceptionText,
-                              winrt::Windows::Foundation::Collections::IVectorView<Microsoft::Terminal::Settings::Model::SettingsLoadWarnings> warnings,
+                              winrt::Windows::Foundation::Collections::IVector<Microsoft::Terminal::Settings::Model::SettingsLoadWarnings> warnings,
                               Microsoft::Terminal::Settings::Model::CascadiaSettings newSettings) :
             _Reload{ reload },
             _Result{ result },

src/cascadia/TerminalApp/SnippetsPaneContent.xaml

@@ -206,6 +206,10 @@
                     <!--  Define resources for HighContrast mode here  -->
                     <StaticResource x:Key="PageBackground"
                                     ResourceKey="SystemColorWindowColorBrush" />
+                    <StaticResource x:Key="PlayButtonHoveredColor"
+                                    ResourceKey="SystemColorHighlightColor" />
+                    <StaticResource x:Key="PlayButtonNormalColor"
+                                    ResourceKey="SystemColorHighlightColor" />
                 </ResourceDictionary>
 
             </ResourceDictionary.ThemeDictionaries>

src/cascadia/TerminalApp/SuggestionsControl.xaml

@@ -230,7 +230,6 @@
                               VerticalScrollMode="Enabled"
                               Visibility="Visible">
                     <TextBlock x:Name="_descriptionComment"
-                               Margin="0,0,20,0"
                                IsTextSelectionEnabled="True"
                                TextWrapping="WrapWholeWords" />
                 </ScrollViewer>

src/cascadia/TerminalApp/TabBase.cpp

@@ -519,45 +519,67 @@ namespace winrt::TerminalApp::implementation
             deselectedFontBrush.Color(winrt::Windows::UI::Colors::White());
         }
 
-        // Prior to MUX 2.7, we set TabViewItemHeaderBackground, but now we can
-        // use TabViewItem().Background() for that. HOWEVER,
-        // TabViewItem().Background() only sets the color of the tab background
-        // when the TabViewItem is unselected. So we still need to set the other
-        // properties ourselves.
-        //
-        // In GH#11294 we thought we'd still need to set
-        // TabViewItemHeaderBackground manually, but GH#11382 discovered that
-        // Background() was actually okay after all.
+        // Add the empty theme dictionaries
+        const auto& tabItemThemeResources{ TabViewItem().Resources().ThemeDictionaries() };
+        ResourceDictionary lightThemeDictionary;
+        ResourceDictionary darkThemeDictionary;
+        ResourceDictionary highContrastThemeDictionary;
+        tabItemThemeResources.Insert(winrt::box_value(L"Light"), lightThemeDictionary);
+        tabItemThemeResources.Insert(winrt::box_value(L"Dark"), darkThemeDictionary);
+        tabItemThemeResources.Insert(winrt::box_value(L"HighContrast"), highContrastThemeDictionary);
 
-        const auto& tabItemResources{ TabViewItem().Resources() };
+        // Now actually set the resources we want in them.
+        // Before, we used to put these on the ResourceDictionary directly.
+        // However, HighContrast mode may require some adjustments. So let's just add
+        //   all three so we can make those adjustments on the HighContrast version.
+        for (const auto& [k, v] : tabItemThemeResources)
+        {
+            const bool isHighContrast = winrt::unbox_value<hstring>(k) == L"HighContrast";
+            const auto& currentDictionary = v.as<ResourceDictionary>();
 
-        TabViewItem().Background(deselectedTabBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderBackgroundSelected"), selectedTabBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderBackgroundPointerOver"), hoverTabBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderBackgroundPressed"), selectedTabBrush);
+            // TabViewItem.Background
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderBackground"), deselectedTabBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderBackgroundSelected"), selectedTabBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderBackgroundPointerOver"), isHighContrast ? fontBrush : hoverTabBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderBackgroundPressed"), selectedTabBrush);
 
-        // Similarly, TabViewItem().Foreground()  sets the color for the text
-        // when the TabViewItem isn't selected, but not when it is hovered,
-        // pressed, dragged, or selected, so we'll need to just set them all
-        // anyways.
-        TabViewItem().Foreground(deselectedFontBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderForeground"), deselectedFontBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderForegroundSelected"), fontBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderForegroundPointerOver"), fontBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderForegroundPressed"), fontBrush);
+            // TabViewItem.Foreground (aka text)
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderForeground"), deselectedFontBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderForegroundSelected"), fontBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderForegroundPointerOver"), isHighContrast ? selectedTabBrush : fontBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderForegroundPressed"), fontBrush);
 
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonForeground"), deselectedFontBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonForegroundPressed"), secondaryFontBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonForegroundPointerOver"), fontBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderPressedCloseButtonForeground"), fontBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderPointerOverCloseButtonForeground"), fontBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderSelectedCloseButtonForeground"), fontBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonBackgroundPressed"), subtleFillColorTertiaryBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonBackgroundPointerOver"), subtleFillColorSecondaryBrush);
+            // TabViewItem.CloseButton.Foreground (aka X)
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonForeground"), deselectedFontBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonForegroundPressed"), isHighContrast ? deselectedFontBrush : secondaryFontBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonForegroundPointerOver"), isHighContrast ? deselectedFontBrush : fontBrush);
 
-        tabItemResources.Insert(winrt::box_value(L"TabViewButtonForegroundActiveTab"), fontBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewButtonForegroundPressed"), fontBrush);
-        tabItemResources.Insert(winrt::box_value(L"TabViewButtonForegroundPointerOver"), fontBrush);
+            // TabViewItem.CloseButton.Foreground _when_ interacting with the tab
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderPressedCloseButtonForeground"), fontBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderPointerOverCloseButtonForeground"), isHighContrast ? selectedTabBrush : fontBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderSelectedCloseButtonForeground"), fontBrush);
+
+            // TabViewItem.CloseButton.Background (aka X button)
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonBackground"), deselectedTabBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonBackgroundPressed"), isHighContrast ? selectedTabBrush : subtleFillColorTertiaryBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonBackgroundPointerOver"), isHighContrast ? selectedTabBrush : subtleFillColorSecondaryBrush);
+
+            // A few miscellaneous resources that WinUI said may be removed in the future
+            currentDictionary.Insert(winrt::box_value(L"TabViewButtonForegroundActiveTab"), fontBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewButtonForegroundPressed"), fontBrush);
+            currentDictionary.Insert(winrt::box_value(L"TabViewButtonForegroundPointerOver"), fontBrush);
+
+            // Add a few extra ones for high contrast mode
+            // BODGY: contrary to the docs, Insert() seems to throw if the value already exists
+            //   Make sure you don't touch any that already exist here!
+            if (isHighContrast)
+            {
+                // TabViewItem.CloseButton.Border: in HC mode, the border makes the button more clearly visible
+                currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonBorderBrushPressed"), fontBrush);
+                currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonBorderBrushPointerOver"), fontBrush);
+                currentDictionary.Insert(winrt::box_value(L"TabViewItemHeaderCloseButtonBorderBrushSelected"), fontBrush);
+            }
+        }
 
         _RefreshVisualState();
     }
@@ -572,36 +594,55 @@ namespace winrt::TerminalApp::implementation
     void TabBase::_ClearTabBackgroundColor()
     {
         static const winrt::hstring keys[] = {
+            // TabViewItem.Background
             L"TabViewItemHeaderBackground",
             L"TabViewItemHeaderBackgroundSelected",
             L"TabViewItemHeaderBackgroundPointerOver",
             L"TabViewItemHeaderBackgroundPressed",
+
+            // TabViewItem.Foreground (aka text)
             L"TabViewItemHeaderForeground",
             L"TabViewItemHeaderForegroundSelected",
             L"TabViewItemHeaderForegroundPointerOver",
             L"TabViewItemHeaderForegroundPressed",
+
+            // TabViewItem.CloseButton.Foreground (aka X)
             L"TabViewItemHeaderCloseButtonForeground",
-            L"TabViewItemHeaderCloseButtonForegroundPressed",
+            L"TabViewItemHeaderForegroundSelected",
             L"TabViewItemHeaderCloseButtonForegroundPointerOver",
+            L"TabViewItemHeaderCloseButtonForegroundPressed",
+
+            // TabViewItem.CloseButton.Foreground _when_ interacting with the tab
             L"TabViewItemHeaderPressedCloseButtonForeground",
             L"TabViewItemHeaderPointerOverCloseButtonForeground",
             L"TabViewItemHeaderSelectedCloseButtonForeground",
+
+            // TabViewItem.CloseButton.Background (aka X button)
+            L"TabViewItemHeaderCloseButtonBackground",
             L"TabViewItemHeaderCloseButtonBackgroundPressed",
             L"TabViewItemHeaderCloseButtonBackgroundPointerOver",
+
+            // A few miscellaneous resources that WinUI said may be removed in the future
             L"TabViewButtonForegroundActiveTab",
             L"TabViewButtonForegroundPressed",
-            L"TabViewButtonForegroundPointerOver"
+            L"TabViewButtonForegroundPointerOver",
+
+            // TabViewItem.CloseButton.Border: in HC mode, the border makes the button more clearly visible
+            L"TabViewItemHeaderCloseButtonBorderBrushPressed",
+            L"TabViewItemHeaderCloseButtonBorderBrushPointerOver",
+            L"TabViewItemHeaderCloseButtonBorderBrushSelected"
         };
 
-        const auto& tabItemResources{ TabViewItem().Resources() };
+        const auto& tabItemThemeResources{ TabViewItem().Resources().ThemeDictionaries() };
 
         // simply clear any of the colors in the tab's dict
         for (const auto& keyString : keys)
         {
-            auto key = winrt::box_value(keyString);
-            if (tabItemResources.HasKey(key))
+            const auto key = winrt::box_value(keyString);
+            for (const auto& [_, v] : tabItemThemeResources)
             {
-                tabItemResources.Remove(key);
+                const auto& themeDictionary = v.as<ResourceDictionary>();
+                themeDictionary.Remove(key);
             }
         }
 

src/cascadia/TerminalApp/TabManagement.cpp

@@ -158,7 +158,10 @@ namespace winrt::TerminalApp::implementation
         // Set this tab's icon to the icon from the content
         _UpdateTabIcon(*newTabImpl);
 
-        tabViewItem.PointerReleased({ this, &TerminalPage::_OnTabClick });
+        tabViewItem.PointerPressed({ this, &TerminalPage::_OnTabPointerPressed });
+        tabViewItem.PointerReleased({ this, &TerminalPage::_OnTabPointerReleased });
+        tabViewItem.PointerExited({ this, &TerminalPage::_OnTabPointerExited });
+        tabViewItem.PointerEntered({ this, &TerminalPage::_OnTabPointerEntered });
 
         // When the tab requests close, try to close it (prompt for approval, if required)
         newTabImpl->CloseRequested([weakTab, weakThis{ get_weak() }](auto&& /*s*/, auto&& /*e*/) {
@@ -488,14 +491,14 @@ namespace winrt::TerminalApp::implementation
                 // Because this will always return -1 in this scenario unfortunately.
                 //
                 // So, what we're going to try to do is move the focus to the tab
-                // to the left, within the bounds of how many tabs we have.
+                // to the right, within the bounds of how many tabs we have.
                 //
                 // EX: we have 4 tabs: [A, B, C, D]. If we close:
                 // * A (tabIndex=0): We'll want to focus tab B (now in index 0)
-                // * B (tabIndex=1): We'll want to focus tab A (now in index 0)
-                // * C (tabIndex=2): We'll want to focus tab B (now in index 1)
+                // * B (tabIndex=1): We'll want to focus tab C (now in index 1)
+                // * C (tabIndex=2): We'll want to focus tab D (now in index 2)
                 // * D (tabIndex=3): We'll want to focus tab C (now in index 2)
-                const auto newSelectedIndex = std::clamp<int32_t>(tabIndex - 1, 0, _tabs.Size() - 1);
+                const auto newSelectedIndex = std::clamp<int32_t>(tabIndex, 0, _tabs.Size() - 1);
                 // _UpdatedSelectedTab will do the work of setting up the new tab as
                 // the focused one, and unfocusing all the others.
                 auto newSelectedTab{ _tabs.GetAt(newSelectedIndex) };
@@ -875,19 +878,66 @@ namespace winrt::TerminalApp::implementation
     // Arguments:
     // - sender: the control that originated this event (TabViewItem)
     // - eventArgs: the event's constituent arguments
-    void TerminalPage::_OnTabClick(const IInspectable& sender, const Windows::UI::Xaml::Input::PointerRoutedEventArgs& eventArgs)
+    void TerminalPage::_OnTabPointerPressed(const IInspectable& sender, const Windows::UI::Xaml::Input::PointerRoutedEventArgs& eventArgs)
     {
-        if (eventArgs.GetCurrentPoint(*this).Properties().IsMiddleButtonPressed())
+        if (eventArgs.GetCurrentPoint(nullptr).Properties().IsMiddleButtonPressed())
         {
-            const auto tabViewItem = sender.try_as<MUX::Controls::TabViewItem>();
-            if (auto tab{ _GetTabByTabViewItem(tabViewItem) })
+            if (const auto tabViewItem{ sender.try_as<MUX::Controls::TabViewItem>() })
             {
-                _HandleCloseTabRequested(tab);
+                _tabPointerMiddleButtonPressed = tabViewItem.CapturePointer(eventArgs.Pointer());
+                _tabPointerMiddleButtonExited = false;
             }
             eventArgs.Handled(true);
         }
-        else if (eventArgs.GetCurrentPoint(*this).Properties().IsRightButtonPressed())
+    }
+
+    // Method Description:
+    // - Tracking pointer state for tab remove
+    // Arguments:
+    // - sender: the control that originated this event (TabViewItem)
+    // - eventArgs: the event's constituent arguments
+    void TerminalPage::_OnTabPointerReleased(const IInspectable& sender, const Windows::UI::Xaml::Input::PointerRoutedEventArgs& eventArgs)
+    {
+        if (_tabPointerMiddleButtonPressed && !eventArgs.GetCurrentPoint(nullptr).Properties().IsMiddleButtonPressed())
         {
+            _tabPointerMiddleButtonPressed = false;
+            if (const auto tabViewItem{ sender.try_as<MUX::Controls::TabViewItem>() })
+            {
+                tabViewItem.ReleasePointerCapture(eventArgs.Pointer());
+                auto tab = _GetTabByTabViewItem(tabViewItem);
+                if (!_tabPointerMiddleButtonExited && tab)
+                {
+                    _HandleCloseTabRequested(tab);
+                }
+            }
+            eventArgs.Handled(true);
+        }
+    }
+
+    // Method Description:
+    // - Tracking pointer state for tab remove
+    // Arguments:
+    // - sender: the control that originated this event (TabViewItem)
+    // - eventArgs: the event's constituent arguments
+    void TerminalPage::_OnTabPointerEntered(const IInspectable& /*sender*/, const Windows::UI::Xaml::Input::PointerRoutedEventArgs& eventArgs)
+    {
+        if (eventArgs.GetCurrentPoint(nullptr).Properties().IsMiddleButtonPressed())
+        {
+            _tabPointerMiddleButtonExited = false;
+            eventArgs.Handled(true);
+        }
+    }
+
+    // Method Description:
+    // - Tracking pointer state for tab remove
+    // Arguments:
+    // - sender: the control that originated this event (TabViewItem)
+    // - eventArgs: the event's constituent arguments
+    void TerminalPage::_OnTabPointerExited(const IInspectable& /*sender*/, const Windows::UI::Xaml::Input::PointerRoutedEventArgs& eventArgs)
+    {
+        if (eventArgs.GetCurrentPoint(nullptr).Properties().IsMiddleButtonPressed())
+        {
+            _tabPointerMiddleButtonExited = true;
             eventArgs.Handled(true);
         }
     }

src/cascadia/TerminalApp/TerminalAppLib.vcxproj

@@ -75,6 +75,9 @@
     <Page Include="SnippetsPaneContent.xaml">
       <SubType>Designer</SubType>
     </Page>
+    <Page Include="MarkdownPaneContent.xaml">
+      <SubType>Designer</SubType>
+    </Page>
   </ItemGroup>
   <!-- ========================= Headers ======================== -->
   <ItemGroup>
@@ -178,6 +181,9 @@
     <ClInclude Include="SuggestionsControl.h">
       <DependentUpon>SuggestionsControl.xaml</DependentUpon>
     </ClInclude>
+    <ClInclude Include="MarkdownPaneContent.h">
+      <DependentUpon>MarkdownPaneContent.xaml</DependentUpon>
+    </ClInclude>
     <ClInclude Include="WindowsPackageManagerFactory.h" />
   </ItemGroup>
   <!-- ========================= Cpp Files ======================== -->
@@ -296,6 +302,11 @@
     <ClCompile Include="SuggestionsControl.cpp">
       <DependentUpon>SuggestionsControl.xaml</DependentUpon>
     </ClCompile>
+    <ClCompile Include="MarkdownPaneContent.cpp">
+      <DependentUpon>MarkdownPaneContent.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </ClCompile>
+
   </ItemGroup>
   <!-- ========================= idl Files ======================== -->
   <ItemGroup>
@@ -368,6 +379,10 @@
       <SubType>Code</SubType>
     </Midl>
     <Midl Include="TerminalSettingsCache.idl" />
+    <Midl Include="MarkdownPaneContent.idl">
+      <DependentUpon>MarkdownPaneContent.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Midl>
   </ItemGroup>
   <!-- ========================= Misc Files ======================== -->
   <ItemGroup>
@@ -416,6 +431,11 @@
     <ProjectReference Include="$(OpenConsoleDir)src\cascadia\UIHelpers\UIHelpers.vcxproj">
       <Project>{6515F03F-E56D-4DB4-B23D-AC4FB80DB36F}</Project>
     </ProjectReference>
+    <ProjectReference Include="$(OpenConsoleDir)src\cascadia\UIMarkdown\UIMarkdown.vcxproj">
+      <Project>{7615F03F-E56D-4DB4-B23D-BD4FB80DB36F}</Project>
+      <Private>true</Private>
+      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+    </ProjectReference>
 
   </ItemGroup>
   <PropertyGroup>
@@ -459,6 +479,12 @@
       <Private>false</Private>
       <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
     </Reference>
+    <Reference Include="Microsoft.Terminal.UI.Markdown">
+      <HintPath>$(OpenConsoleCommonOutDir)Microsoft.Terminal.UI.Markdown\Microsoft.Terminal.UI.Markdown.winmd</HintPath>
+      <IsWinMDFile>true</IsWinMDFile>
+      <Private>false</Private>
+      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
+    </Reference>
     <Reference Include="$(WindowsSDK_MetadataPathVersioned)\Windows.UI.Xaml.Hosting.HostingContract\*\*.winmd">
       <WinMDFile>true</WinMDFile>
       <CopyLocal>false</CopyLocal>
@@ -504,4 +530,4 @@
     </ItemGroup>
   </Target>
   <Import Project="$(SolutionDir)build\rules\CollectWildcardResources.targets" />
-</Project>
+</Project>

src/cascadia/TerminalApp/TerminalPage.cpp

@@ -17,6 +17,7 @@
 #include "SettingsPaneContent.h"
 #include "ScratchpadContent.h"
 #include "SnippetsPaneContent.h"
+#include "MarkdownPaneContent.h"
 #include "TabRowControl.h"
 
 #include "TerminalPage.g.cpp"
@@ -239,14 +240,6 @@ namespace winrt::TerminalApp::implementation
         _newTabButton.Click([weakThis{ get_weak() }](auto&&, auto&&) {
             if (auto page{ weakThis.get() })
             {
-                TraceLoggingWrite(
-                    g_hTerminalAppProvider,
-                    "NewTabMenuDefaultButtonClicked",
-                    TraceLoggingDescription("Event emitted when the default button from the new tab split button is invoked"),
-                    TraceLoggingValue(page->NumberOfTabs(), "TabCount", "The count of tabs currently opened in this window"),
-                    TraceLoggingKeyword(MICROSOFT_KEYWORD_MEASURES),
-                    TelemetryPrivacyDataTag(PDT_ProductAndServiceUsage));
-
                 page->_OpenNewTerminalViaDropdown(NewTerminalArgs());
             }
         });
@@ -888,36 +881,14 @@ namespace winrt::TerminalApp::implementation
         // Since the previous focus location might be discarded in the background,
         // e.g., the command palette will be dismissed by the menu,
         // and then closing the fly-out will move the focus to wrong location.
-        newTabFlyout.Opening([weakThis{ get_weak() }](auto&&, auto&&) {
-            if (auto page{ weakThis.get() })
-            {
-                page->_FocusCurrentTab(true);
-
-                TraceLoggingWrite(
-                    g_hTerminalAppProvider,
-                    "NewTabMenuOpened",
-                    TraceLoggingDescription("Event emitted when the new tab menu is opened"),
-                    TraceLoggingValue(page->NumberOfTabs(), "TabCount", "The Count of tabs currently opened in this window"),
-                    TraceLoggingKeyword(MICROSOFT_KEYWORD_MEASURES),
-                    TelemetryPrivacyDataTag(PDT_ProductAndServiceUsage));
-            }
+        newTabFlyout.Opening([this](auto&&, auto&&) {
+            _FocusCurrentTab(true);
         });
         // Necessary for fly-out sub items to get focus on a tab before collapsing. Related to #15049
-        newTabFlyout.Closing([weakThis{ get_weak() }](auto&&, auto&&) {
-            if (auto page{ weakThis.get() })
+        newTabFlyout.Closing([this](auto&&, auto&&) {
+            if (!_commandPaletteIs(Visibility::Visible))
             {
-                if (!page->_commandPaletteIs(Visibility::Visible))
-                {
-                    page->_FocusCurrentTab(true);
-                }
-
-                TraceLoggingWrite(
-                    g_hTerminalAppProvider,
-                    "NewTabMenuClosed",
-                    TraceLoggingDescription("Event emitted when the new tab menu is closed"),
-                    TraceLoggingValue(page->NumberOfTabs(), "TabCount", "The Count of tabs currently opened in this window"),
-                    TraceLoggingKeyword(MICROSOFT_KEYWORD_MEASURES),
-                    TelemetryPrivacyDataTag(PDT_ProductAndServiceUsage));
+                _FocusCurrentTab(true);
             }
         });
         _newTabButton.Flyout(newTabFlyout);
@@ -1019,7 +990,7 @@ namespace winrt::TerminalApp::implementation
 
                 for (auto&& [profileIndex, remainingProfile] : remainingProfilesEntry.Profiles())
                 {
-                    items.push_back(_CreateNewTabFlyoutProfile(remainingProfile, profileIndex));
+                    items.push_back(_CreateNewTabFlyoutProfile(remainingProfile, profileIndex, {}));
                 }
 
                 break;
@@ -1033,7 +1004,7 @@ namespace winrt::TerminalApp::implementation
                     break;
                 }
 
-                auto profileItem = _CreateNewTabFlyoutProfile(profileEntry.Profile(), profileEntry.ProfileIndex());
+                auto profileItem = _CreateNewTabFlyoutProfile(profileEntry.Profile(), profileEntry.ProfileIndex(), profileEntry.Icon());
                 items.push_back(profileItem);
                 break;
             }
@@ -1043,7 +1014,7 @@ namespace winrt::TerminalApp::implementation
                 const auto actionId = actionEntry.ActionId();
                 if (_settings.ActionMap().GetActionByID(actionId))
                 {
-                    auto actionItem = _CreateNewTabFlyoutAction(actionId);
+                    auto actionItem = _CreateNewTabFlyoutAction(actionId, actionEntry.Icon());
                     items.push_back(actionItem);
                 }
 
@@ -1058,7 +1029,7 @@ namespace winrt::TerminalApp::implementation
     // Method Description:
     // - This method creates a flyout menu item for a given profile with the given index.
     //   It makes sure to set the correct icon, keybinding, and click-action.
-    WUX::Controls::MenuFlyoutItem TerminalPage::_CreateNewTabFlyoutProfile(const Profile profile, int profileIndex)
+    WUX::Controls::MenuFlyoutItem TerminalPage::_CreateNewTabFlyoutProfile(const Profile profile, int profileIndex, const winrt::hstring& iconPathOverride)
     {
         auto profileMenuItem = WUX::Controls::MenuFlyoutItem{};
 
@@ -1079,9 +1050,10 @@ namespace winrt::TerminalApp::implementation
         auto profileName = profile.Name();
         profileMenuItem.Text(profileName);
 
-        // If there's an icon set for this profile, set it as the icon for
-        // this flyout item
-        const auto& iconPath = profile.EvaluatedIcon();
+        // If a custom icon path has been specified, set it as the icon for
+        // this flyout item. Otherwise, if an icon is set for this profile, set that icon
+        // for this flyout item.
+        const auto& iconPath = iconPathOverride.empty() ? profile.EvaluatedIcon() : iconPathOverride;
         if (!iconPath.empty())
         {
             const auto icon = _CreateNewTabFlyoutIcon(iconPath);
@@ -1122,15 +1094,6 @@ namespace winrt::TerminalApp::implementation
         profileMenuItem.Click([profileIndex, weakThis{ get_weak() }](auto&&, auto&&) {
             if (auto page{ weakThis.get() })
             {
-                TraceLoggingWrite(
-                    g_hTerminalAppProvider,
-                    "NewTabMenuItemClicked",
-                    TraceLoggingDescription("Event emitted when an item from the new tab menu is invoked"),
-                    TraceLoggingValue(page->NumberOfTabs(), "TabCount", "The count of tabs currently opened in this window"),
-                    TraceLoggingValue("Profile", "ItemType", "The type of item that was clicked in the new tab menu"),
-                    TraceLoggingKeyword(MICROSOFT_KEYWORD_MEASURES),
-                    TelemetryPrivacyDataTag(PDT_ProductAndServiceUsage));
-
                 NewTerminalArgs newTerminalArgs{ profileIndex };
                 page->_OpenNewTerminalViaDropdown(newTerminalArgs);
             }
@@ -1151,7 +1114,7 @@ namespace winrt::TerminalApp::implementation
     // Method Description:
     // - This method creates a flyout menu item for a given action
     //   It makes sure to set the correct icon, keybinding, and click-action.
-    WUX::Controls::MenuFlyoutItem TerminalPage::_CreateNewTabFlyoutAction(const winrt::hstring& actionId)
+    WUX::Controls::MenuFlyoutItem TerminalPage::_CreateNewTabFlyoutAction(const winrt::hstring& actionId, const winrt::hstring& iconPathOverride)
     {
         auto actionMenuItem = WUX::Controls::MenuFlyoutItem{};
         const auto action{ _settings.ActionMap().GetActionByID(actionId) };
@@ -1164,9 +1127,10 @@ namespace winrt::TerminalApp::implementation
 
         actionMenuItem.Text(action.Name());
 
-        // If there's an icon set for this action, set it as the icon for
-        // this flyout item
-        const auto& iconPath = action.IconPath();
+        // If a custom icon path has been specified, set it as the icon for
+        // this flyout item. Otherwise, if an icon is set for this action, set that icon
+        // for this flyout item.
+        const auto& iconPath = iconPathOverride.empty() ? action.IconPath() : iconPathOverride;
         if (!iconPath.empty())
         {
             const auto icon = _CreateNewTabFlyoutIcon(iconPath);
@@ -1176,15 +1140,6 @@ namespace winrt::TerminalApp::implementation
         actionMenuItem.Click([action, weakThis{ get_weak() }](auto&&, auto&&) {
             if (auto page{ weakThis.get() })
             {
-                TraceLoggingWrite(
-                    g_hTerminalAppProvider,
-                    "NewTabMenuItemClicked",
-                    TraceLoggingDescription("Event emitted when an item from the new tab menu is invoked"),
-                    TraceLoggingValue(page->NumberOfTabs(), "TabCount", "The count of tabs currently opened in this window"),
-                    TraceLoggingValue("Action", "ItemType", "The type of item that was clicked in the new tab menu"),
-                    TraceLoggingKeyword(MICROSOFT_KEYWORD_MEASURES),
-                    TelemetryPrivacyDataTag(PDT_ProductAndServiceUsage));
-
                 page->_actionDispatch->DoAction(action.ActionAndArgs());
             }
         });
@@ -1246,7 +1201,6 @@ namespace winrt::TerminalApp::implementation
 
         const auto dispatchToElevatedWindow = ctrlPressed && !IsRunningElevated();
 
-        auto sessionType = "";
         if ((shiftPressed || dispatchToElevatedWindow) && !debugTap)
         {
             // Manually fill in the evaluated profile.
@@ -1264,12 +1218,10 @@ namespace winrt::TerminalApp::implementation
             if (dispatchToElevatedWindow)
             {
                 _OpenElevatedWT(newTerminalArgs);
-                sessionType = "ElevatedWindow";
             }
             else
             {
                 _OpenNewWindow(newTerminalArgs);
-                sessionType = "Window";
             }
         }
         else
@@ -1288,23 +1240,12 @@ namespace winrt::TerminalApp::implementation
                                  SplitDirection::Automatic,
                                  0.5f,
                                  newPane);
-                sessionType = "Pane";
             }
             else
             {
                 _CreateNewTabFromPane(newPane);
-                sessionType = "Tab";
             }
         }
-
-        TraceLoggingWrite(
-            g_hTerminalAppProvider,
-            "NewTabMenuCreatedNewTerminalSession",
-            TraceLoggingDescription("Event emitted when a new terminal was created via the new tab menu"),
-            TraceLoggingValue(NumberOfTabs(), "NewTabCount", "The count of tabs currently opened in this window"),
-            TraceLoggingValue(sessionType, "SessionType", "The type of session that was created"),
-            TraceLoggingKeyword(MICROSOFT_KEYWORD_MEASURES),
-            TelemetryPrivacyDataTag(PDT_ProductAndServiceUsage));
     }
 
     std::wstring TerminalPage::_evaluatePathForCwd(const std::wstring_view path)
@@ -1511,30 +1452,6 @@ namespace winrt::TerminalApp::implementation
         {
             target = SettingsTarget::DefaultsFile;
         }
-
-        const auto targetAsString = [&target]() {
-            switch (target)
-            {
-            case SettingsTarget::SettingsFile:
-                return "SettingsFile";
-            case SettingsTarget::DefaultsFile:
-                return "DefaultsFile";
-            case SettingsTarget::SettingsUI:
-            default:
-                return "UI";
-            }
-        }();
-
-        TraceLoggingWrite(
-            g_hTerminalAppProvider,
-            "NewTabMenuItemClicked",
-            TraceLoggingDescription("Event emitted when an item from the new tab menu is invoked"),
-            TraceLoggingValue(NumberOfTabs(), "TabCount", "The count of tabs currently opened in this window"),
-            TraceLoggingValue("Settings", "ItemType", "The type of item that was clicked in the new tab menu"),
-            TraceLoggingValue(targetAsString, "SettingsTarget", "The target settings file or UI"),
-            TraceLoggingKeyword(MICROSOFT_KEYWORD_MEASURES),
-            TelemetryPrivacyDataTag(PDT_ProductAndServiceUsage));
-
         _LaunchSettings(target);
     }
 
@@ -1546,15 +1463,6 @@ namespace winrt::TerminalApp::implementation
         auto p = LoadCommandPalette();
         p.EnableCommandPaletteMode(CommandPaletteLaunchMode::Action);
         p.Visibility(Visibility::Visible);
-
-        TraceLoggingWrite(
-            g_hTerminalAppProvider,
-            "NewTabMenuItemClicked",
-            TraceLoggingDescription("Event emitted when an item from the new tab menu is invoked"),
-            TraceLoggingValue(NumberOfTabs(), "TabCount", "The count of tabs currently opened in this window"),
-            TraceLoggingValue("CommandPalette", "ItemType", "The type of item that was clicked in the new tab menu"),
-            TraceLoggingKeyword(MICROSOFT_KEYWORD_MEASURES),
-            TelemetryPrivacyDataTag(PDT_ProductAndServiceUsage));
     }
 
     // Method Description:
@@ -1567,15 +1475,6 @@ namespace winrt::TerminalApp::implementation
                                            const RoutedEventArgs&)
     {
         _ShowAboutDialog();
-
-        TraceLoggingWrite(
-            g_hTerminalAppProvider,
-            "NewTabMenuItemClicked",
-            TraceLoggingDescription("Event emitted when an item from the new tab menu is invoked"),
-            TraceLoggingValue(NumberOfTabs(), "TabCount", "The count of tabs currently opened in this window"),
-            TraceLoggingValue("About", "ItemType", "The type of item that was clicked in the new tab menu"),
-            TraceLoggingKeyword(MICROSOFT_KEYWORD_MEASURES),
-            TelemetryPrivacyDataTag(PDT_ProductAndServiceUsage));
     }
 
     // Method Description:
@@ -1847,6 +1746,8 @@ namespace winrt::TerminalApp::implementation
 
         term.SearchMissingCommand({ get_weak(), &TerminalPage::_SearchMissingCommandHandler });
 
+        term.WindowSizeChanged({ get_weak(), &TerminalPage::_WindowSizeChanged });
+
         // Don't even register for the event if the feature is compiled off.
         if constexpr (Feature_ShellCompletions::IsEnabled())
         {
@@ -2342,7 +2243,7 @@ namespace winrt::TerminalApp::implementation
     void TerminalPage::_MoveContent(std::vector<Settings::Model::ActionAndArgs>&& actions,
                                     const winrt::hstring& windowName,
                                     const uint32_t tabIndex,
-                                    const std::optional<til::point>& dragPoint)
+                                    const std::optional<winrt::Windows::Foundation::Point>& dragPoint)
     {
         const auto winRtActions{ winrt::single_threaded_vector<ActionAndArgs>(std::move(actions)) };
         const auto str{ ActionAndArgs::Serialize(winRtActions) };
@@ -2351,7 +2252,7 @@ namespace winrt::TerminalApp::implementation
                                                                       tabIndex);
         if (dragPoint.has_value())
         {
-            request->WindowPosition(dragPoint->to_winrt_point());
+            request->WindowPosition(*dragPoint);
         }
         RequestMoveContent.raise(*this, *request);
     }
@@ -2425,7 +2326,7 @@ namespace winrt::TerminalApp::implementation
     // for it. The Title change will be propagated upwards through the tab's
     // PropertyChanged event handler.
     void TerminalPage::_activePaneChanged(winrt::TerminalApp::TerminalTab sender,
-                                          Windows::Foundation::IInspectable /*args*/)
+                                          Windows::Foundation::IInspectable args)
     {
         if (const auto tab{ _GetTerminalTabImpl(sender) })
         {
@@ -3073,14 +2974,15 @@ namespace winrt::TerminalApp::implementation
     // Arguments:
     // - dismissSelection: if not enabled, copying text doesn't dismiss the selection
     // - singleLine: if enabled, copy contents as a single line of text
+    // - withControlSequences: if enabled, the copied plain text contains color/style ANSI escape codes from the selection
     // - formats: dictate which formats need to be copied
     // Return Value:
     // - true iff we we able to copy text (if a selection was active)
-    bool TerminalPage::_CopyText(const bool dismissSelection, const bool singleLine, const Windows::Foundation::IReference<CopyFormat>& formats)
+    bool TerminalPage::_CopyText(const bool dismissSelection, const bool singleLine, const bool withControlSequences, const Windows::Foundation::IReference<CopyFormat>& formats)
     {
         if (const auto& control{ _GetActiveControl() })
         {
-            return control.CopySelectionToClipboard(dismissSelection, singleLine, formats);
+            return control.CopySelectionToClipboard(dismissSelection, singleLine, withControlSequences, formats);
         }
         return false;
     }
@@ -3194,6 +3096,31 @@ namespace winrt::TerminalApp::implementation
         term.RefreshQuickFixMenu();
     }
 
+    void TerminalPage::_WindowSizeChanged(const IInspectable sender, const Microsoft::Terminal::Control::WindowSizeChangedEventArgs args)
+    {
+        // Raise if:
+        // - Not in quake mode
+        // - Not in fullscreen
+        // - Only one tab exists
+        // - Only one pane exists
+        // else:
+        // - Reset conpty to its original size back
+        if (!WindowProperties().IsQuakeWindow() && !Fullscreen() &&
+            NumberOfTabs() == 1 && _GetFocusedTabImpl()->GetLeafPaneCount() == 1)
+        {
+            WindowSizeChanged.raise(*this, args);
+        }
+        else if (const auto& control{ sender.try_as<TermControl>() })
+        {
+            const auto& connection = control.Connection();
+
+            if (const auto& conpty{ connection.try_as<TerminalConnection::ConptyConnection>() })
+            {
+                conpty.ResetSize();
+            }
+        }
+    }
+
     // Method Description:
     // - Paste text from the Windows Clipboard to the focused terminal
     void TerminalPage::_PasteText()
@@ -3513,6 +3440,30 @@ namespace winrt::TerminalApp::implementation
 
             content = *tasksContent;
         }
+        else if (paneType == L"x-markdown")
+        {
+            if (Feature_MarkdownPane::IsEnabled())
+            {
+                const auto& markdownContent{ winrt::make_self<MarkdownPaneContent>(L"") };
+                markdownContent->UpdateSettings(_settings);
+                markdownContent->GetRoot().KeyDown({ this, &TerminalPage::_KeyDownHandler });
+
+                // This one doesn't use DispatchCommand, because we don't create
+                // Command's freely at runtime like we do with just plain old actions.
+                markdownContent->DispatchActionRequested([weak = get_weak()](const auto& sender, const auto& actionAndArgs) {
+                    if (const auto& page{ weak.get() })
+                    {
+                        page->_actionDispatch->DoAction(sender, actionAndArgs);
+                    }
+                });
+                if (const auto& termControl{ _GetActiveControl() })
+                {
+                    markdownContent->SetLastActiveControl(termControl);
+                }
+
+                content = *markdownContent;
+            }
+        }
 
         assert(content);
 
@@ -4201,13 +4152,6 @@ namespace winrt::TerminalApp::implementation
             }
         });
 
-        sui.ShowLoadWarningsDialog([weakThis{ get_weak() }](auto&& /*s*/, const Windows::Foundation::Collections::IVectorView<winrt::Microsoft::Terminal::Settings::Model::SettingsLoadWarnings>& warnings) {
-            if (auto page{ weakThis.get() })
-            {
-                page->ShowLoadWarningsDialog.raise(*page, warnings);
-            }
-        });
-
         return *settingsContent;
     }
 
@@ -5259,16 +5203,17 @@ namespace winrt::TerminalApp::implementation
             // position the dropped window.
 
             // First, the position of the pointer, from the CoreWindow
-            const til::point pointerPosition{ til::math::rounding, CoreWindow::GetForCurrentThread().PointerPosition() };
+            const auto pointerPosition = CoreWindow::GetForCurrentThread().PointerPosition();
             // Next, the position of the tab itself:
-            const til::point tabPosition{ til::math::rounding, eventTab.TransformToVisual(nullptr).TransformPoint({ 0, 0 }) };
+            const auto tabPosition = eventTab.TransformToVisual(nullptr).TransformPoint({ 0, 0 });
             // Now, we need to add the origin of our CoreWindow to the tab
             // position.
-            const auto& coreWindowBounds{ CoreWindow::GetForCurrentThread().Bounds() };
-            const til::point windowOrigin{ til::math::rounding, coreWindowBounds.X, coreWindowBounds.Y };
-            const auto realTabPosition = windowOrigin + tabPosition;
+            const auto windowOrigin = CoreWindow::GetForCurrentThread().Bounds();
             // Subtract the two to get the offset.
-            _stashed.dragOffset = til::point{ pointerPosition - realTabPosition };
+            _stashed.dragOffset = {
+                pointerPosition.X - windowOrigin.X - tabPosition.X,
+                pointerPosition.Y - windowOrigin.Y - tabPosition.Y,
+            };
 
             // Into the DataPackage, let's stash our own window ID.
             const auto id{ _WindowProperties.WindowId() };
@@ -5412,8 +5357,8 @@ namespace winrt::TerminalApp::implementation
         }
     }
 
-    safe_void_coroutine TerminalPage::_onTabDroppedOutside(winrt::IInspectable /*sender*/,
-                                                           winrt::MUX::Controls::TabViewTabDroppedOutsideEventArgs /*e*/)
+    safe_void_coroutine TerminalPage::_onTabDroppedOutside(winrt::IInspectable sender,
+                                                           winrt::MUX::Controls::TabViewTabDroppedOutsideEventArgs e)
     {
         // Get the current pointer point from the CoreWindow
         const auto& pointerPoint{ CoreWindow::GetForCurrentThread().PointerPosition() };
@@ -5442,14 +5387,17 @@ namespace winrt::TerminalApp::implementation
 
             // -1 is the magic number for "new window"
             // 0 as the tab index, because we don't care. It's making a new window. It'll be the only tab.
-            const til::point adjusted = til::point{ til::math::rounding, pointerPoint } - _stashed.dragOffset;
+            const winrt::Windows::Foundation::Point adjusted = {
+                pointerPoint.X - _stashed.dragOffset.X,
+                pointerPoint.Y - _stashed.dragOffset.Y,
+            };
             _sendDraggedTabToWindow(winrt::hstring{ L"-1" }, 0, adjusted);
         }
     }
 
     void TerminalPage::_sendDraggedTabToWindow(const winrt::hstring& windowId,
                                                const uint32_t tabIndex,
-                                               std::optional<til::point> dragPoint)
+                                               std::optional<winrt::Windows::Foundation::Point> dragPoint)
     {
         auto startupActions = _stashed.draggedTab->BuildStartupActions(BuildStartupKind::Content);
         _DetachTabFromWindow(_stashed.draggedTab);
@@ -5485,14 +5433,6 @@ namespace winrt::TerminalApp::implementation
         runAsAdminItem.Click([profileIndex, weakThis{ get_weak() }](auto&&, auto&&) {
             if (auto page{ weakThis.get() })
             {
-                TraceLoggingWrite(
-                    g_hTerminalAppProvider,
-                    "NewTabMenuItemElevateSubmenuItemClicked",
-                    TraceLoggingDescription("Event emitted when the elevate submenu item from the new tab menu is invoked"),
-                    TraceLoggingValue(page->NumberOfTabs(), "TabCount", "The count of tabs currently opened in this window"),
-                    TraceLoggingKeyword(MICROSOFT_KEYWORD_MEASURES),
-                    TelemetryPrivacyDataTag(PDT_ProductAndServiceUsage));
-
                 NewTerminalArgs args{ profileIndex };
                 args.Elevate(true);
                 page->_OpenNewTerminalViaDropdown(args);

src/cascadia/TerminalApp/TerminalPage.h

@@ -195,11 +195,12 @@ namespace winrt::TerminalApp::implementation
         til::typed_event<IInspectable, IInspectable> IdentifyWindowsRequested;
         til::typed_event<IInspectable, winrt::TerminalApp::RenameWindowRequestedArgs> RenameWindowRequested;
         til::typed_event<IInspectable, IInspectable> SummonWindowRequested;
+        til::typed_event<IInspectable, winrt::Microsoft::Terminal::Control::WindowSizeChangedEventArgs> WindowSizeChanged;
 
+        til::typed_event<IInspectable, IInspectable> CloseRequested;
         til::typed_event<IInspectable, IInspectable> OpenSystemMenu;
         til::typed_event<IInspectable, IInspectable> QuitRequested;
         til::typed_event<IInspectable, winrt::Microsoft::Terminal::Control::ShowWindowArgs> ShowWindowChanged;
-        til::typed_event<Windows::Foundation::IInspectable, Windows::Foundation::Collections::IVectorView<winrt::Microsoft::Terminal::Settings::Model::SettingsLoadWarnings>> ShowLoadWarningsDialog;
 
         til::typed_event<Windows::Foundation::IInspectable, winrt::TerminalApp::RequestMoveContentArgs> RequestMoveContent;
         til::typed_event<Windows::Foundation::IInspectable, winrt::TerminalApp::RequestReceiveContentArgs> RequestReceiveContent;
@@ -291,7 +292,7 @@ namespace winrt::TerminalApp::implementation
         struct StashedDragData
         {
             winrt::com_ptr<winrt::TerminalApp::implementation::TabBase> draggedTab{ nullptr };
-            til::point dragOffset{ 0, 0 };
+            winrt::Windows::Foundation::Point dragOffset{ 0, 0 };
         } _stashed;
 
         winrt::Microsoft::Terminal::TerminalConnection::ConptyConnection::NewConnection_revoker _newConnectionRevoker;
@@ -315,8 +316,8 @@ namespace winrt::TerminalApp::implementation
         void _CreateNewTabFlyout();
         std::vector<winrt::Windows::UI::Xaml::Controls::MenuFlyoutItemBase> _CreateNewTabFlyoutItems(winrt::Windows::Foundation::Collections::IVector<Microsoft::Terminal::Settings::Model::NewTabMenuEntry> entries);
         winrt::Windows::UI::Xaml::Controls::IconElement _CreateNewTabFlyoutIcon(const winrt::hstring& icon);
-        winrt::Windows::UI::Xaml::Controls::MenuFlyoutItem _CreateNewTabFlyoutProfile(const Microsoft::Terminal::Settings::Model::Profile profile, int profileIndex);
-        winrt::Windows::UI::Xaml::Controls::MenuFlyoutItem _CreateNewTabFlyoutAction(const winrt::hstring& actionId);
+        winrt::Windows::UI::Xaml::Controls::MenuFlyoutItem _CreateNewTabFlyoutProfile(const Microsoft::Terminal::Settings::Model::Profile profile, int profileIndex, const winrt::hstring& iconPathOverride);
+        winrt::Windows::UI::Xaml::Controls::MenuFlyoutItem _CreateNewTabFlyoutAction(const winrt::hstring& actionId, const winrt::hstring& iconPathOverride);
 
         void _OpenNewTabDropdown();
         HRESULT _OpenNewTab(const Microsoft::Terminal::Settings::Model::INewContentArgs& newContentArgs);
@@ -428,7 +429,7 @@ namespace winrt::TerminalApp::implementation
         bool _IsUriSupported(const winrt::Windows::Foundation::Uri& parsedUri);
 
         void _ShowCouldNotOpenDialog(winrt::hstring reason, winrt::hstring uri);
-        bool _CopyText(const bool dismissSelection, const bool singleLine, const Windows::Foundation::IReference<Microsoft::Terminal::Control::CopyFormat>& formats);
+        bool _CopyText(const bool dismissSelection, const bool singleLine, const bool withControlSequences, const Windows::Foundation::IReference<Microsoft::Terminal::Control::CopyFormat>& formats);
 
         safe_void_coroutine _SetTaskbarProgressHandler(const IInspectable sender, const IInspectable eventArgs);
 
@@ -442,7 +443,13 @@ namespace winrt::TerminalApp::implementation
         void _TabDragStarted(const IInspectable& sender, const IInspectable& eventArgs);
         void _TabDragCompleted(const IInspectable& sender, const IInspectable& eventArgs);
 
-        void _OnTabClick(const IInspectable& sender, const Windows::UI::Xaml::Input::PointerRoutedEventArgs& eventArgs);
+        bool _tabPointerMiddleButtonPressed{ false };
+        bool _tabPointerMiddleButtonExited{ false };
+        void _OnTabPointerPressed(const IInspectable& sender, const Windows::UI::Xaml::Input::PointerRoutedEventArgs& eventArgs);
+        void _OnTabPointerReleased(const IInspectable& sender, const Windows::UI::Xaml::Input::PointerRoutedEventArgs& eventArgs);
+        void _OnTabPointerEntered(const IInspectable& sender, const Windows::UI::Xaml::Input::PointerRoutedEventArgs& eventArgs);
+        void _OnTabPointerExited(const IInspectable& sender, const Windows::UI::Xaml::Input::PointerRoutedEventArgs& eventArgs);
+
         void _OnTabSelectionChanged(const IInspectable& sender, const Windows::UI::Xaml::Controls::SelectionChangedEventArgs& eventArgs);
         void _OnTabItemsChanged(const IInspectable& sender, const Windows::Foundation::Collections::IVectorChangedEventArgs& eventArgs);
         void _OnTabCloseRequested(const IInspectable& sender, const Microsoft::UI::Xaml::Controls::TabViewTabCloseRequestedEventArgs& eventArgs);
@@ -541,6 +548,7 @@ namespace winrt::TerminalApp::implementation
         Windows::Foundation::IAsyncAction _SearchMissingCommandHandler(const IInspectable sender, const winrt::Microsoft::Terminal::Control::SearchMissingCommandEventArgs args);
         Windows::Foundation::IAsyncOperation<Windows::Foundation::Collections::IVectorView<winrt::Microsoft::Management::Deployment::MatchResult>> _FindPackageAsync(hstring query);
 
+        void _WindowSizeChanged(const IInspectable sender, const winrt::Microsoft::Terminal::Control::WindowSizeChangedEventArgs args);
         safe_void_coroutine _windowPropertyChanged(const IInspectable& sender, const winrt::Windows::UI::Xaml::Data::PropertyChangedEventArgs& args);
 
         void _onTabDragStarting(const winrt::Microsoft::UI::Xaml::Controls::TabView& sender, const winrt::Microsoft::UI::Xaml::Controls::TabViewTabDragStartingEventArgs& e);
@@ -553,8 +561,8 @@ namespace winrt::TerminalApp::implementation
         void _MoveContent(std::vector<winrt::Microsoft::Terminal::Settings::Model::ActionAndArgs>&& actions,
                           const winrt::hstring& windowName,
                           const uint32_t tabIndex,
-                          const std::optional<til::point>& dragPoint = std::nullopt);
-        void _sendDraggedTabToWindow(const winrt::hstring& windowId, const uint32_t tabIndex, std::optional<til::point> dragPoint);
+                          const std::optional<winrt::Windows::Foundation::Point>& dragPoint = std::nullopt);
+        void _sendDraggedTabToWindow(const winrt::hstring& windowId, const uint32_t tabIndex, std::optional<winrt::Windows::Foundation::Point> dragPoint);
 
         void _PopulateContextMenu(const Microsoft::Terminal::Control::TermControl& control, const Microsoft::UI::Xaml::Controls::CommandBarFlyout& sender, const bool withSelection);
         void _PopulateQuickFixMenu(const Microsoft::Terminal::Control::TermControl& control, const Windows::UI::Xaml::Controls::MenuFlyout& sender);

src/cascadia/TerminalApp/TerminalPage.idl

@@ -100,10 +100,11 @@ namespace TerminalApp
         event Windows.Foundation.TypedEventHandler<Object, Object> IdentifyWindowsRequested;
         event Windows.Foundation.TypedEventHandler<Object, RenameWindowRequestedArgs> RenameWindowRequested;
         event Windows.Foundation.TypedEventHandler<Object, Object> SummonWindowRequested;
+        event Windows.Foundation.TypedEventHandler<Object, Microsoft.Terminal.Control.WindowSizeChangedEventArgs> WindowSizeChanged;
 
+        event Windows.Foundation.TypedEventHandler<Object, Object> CloseRequested;
         event Windows.Foundation.TypedEventHandler<Object, Object> OpenSystemMenu;
         event Windows.Foundation.TypedEventHandler<Object, Microsoft.Terminal.Control.ShowWindowArgs> ShowWindowChanged;
-        event Windows.Foundation.TypedEventHandler<Object, Windows.Foundation.Collections.IVectorView<Microsoft.Terminal.Settings.Model.SettingsLoadWarnings> > ShowLoadWarningsDialog;
 
         event Windows.Foundation.TypedEventHandler<Object, RequestMoveContentArgs> RequestMoveContent;
         event Windows.Foundation.TypedEventHandler<Object, RequestReceiveContentArgs> RequestReceiveContent;

src/cascadia/TerminalApp/TerminalPaneContent.cpp

@@ -95,7 +95,7 @@ namespace winrt::TerminalApp::implementation
         NewTerminalArgs args{};
         const auto& controlSettings = _control.Settings();
 
-        args.Profile(::Microsoft::Console::Utils::GuidToString(_profile.Guid()));
+        args.Profile(controlSettings.ProfileName());
         // If we know the user's working directory use it instead of the profile.
         if (const auto dir = _control.WorkingDirectory(); !dir.empty())
         {
@@ -339,12 +339,8 @@ namespace winrt::TerminalApp::implementation
         RestartTerminalRequested.raise(*this, nullptr);
     }
 
-    void TerminalPaneContent::UpdateSettings(const CascadiaSettings& settings)
+    void TerminalPaneContent::UpdateSettings(const CascadiaSettings& /*settings*/)
     {
-        // Reload our profile from the settings model to propagate bell mode, icon, and close on exit mode (anything that uses _profile).
-        const auto profile{ settings.FindProfile(_profile.Guid()) };
-        _profile = profile ? profile : settings.ProfileDefaults();
-
         if (const auto& settings{ _cache.TryLookup(_profile) })
         {
             _control.UpdateControlSettings(settings.DefaultSettings(), settings.UnfocusedSettings());

src/cascadia/TerminalApp/TerminalTab.cpp

@@ -1235,6 +1235,10 @@ namespace winrt::TerminalApp::implementation
                 {
                     taskPane.SetLastActiveControl(termControl);
                 }
+                else if (const auto& taskPane{ p->GetContent().try_as<MarkdownPaneContent>() })
+                {
+                    taskPane.SetLastActiveControl(termControl);
+                }
             });
         }
     }

src/cascadia/TerminalApp/TerminalWindow.cpp

@@ -15,6 +15,7 @@
 
 using namespace winrt::Windows::ApplicationModel;
 using namespace winrt::Windows::ApplicationModel::DataTransfer;
+using namespace winrt::Windows::Graphics::Display;
 using namespace winrt::Windows::UI::Xaml;
 using namespace winrt::Windows::UI::Xaml::Controls;
 using namespace winrt::Windows::UI::Core;
@@ -217,7 +218,7 @@ namespace winrt::TerminalApp::implementation
         _root->SetSettings(_settings, false); // We're on our UI thread right now, so this is safe
         _root->Loaded({ get_weak(), &TerminalWindow::_OnLoaded });
         _root->Initialized({ get_weak(), &TerminalWindow::_pageInitialized });
-        _root->ShowLoadWarningsDialog({ get_weak(), &TerminalWindow::_ShowLoadWarningsDialog });
+        _root->WindowSizeChanged({ get_weak(), &TerminalWindow::_WindowSizeChanged });
         _root->Create();
 
         AppLogic::Current()->SettingsChanged({ get_weak(), &TerminalWindow::UpdateSettingsHandler });
@@ -442,7 +443,7 @@ namespace winrt::TerminalApp::implementation
     //   validating the settings.
     // - Only one dialog can be visible at a time. If another dialog is visible
     //   when this is called, nothing happens. See ShowDialog for details
-    void TerminalWindow::_ShowLoadWarningsDialog(const IInspectable&, const Windows::Foundation::Collections::IVectorView<SettingsLoadWarnings>& warnings)
+    void TerminalWindow::_ShowLoadWarningsDialog(const Windows::Foundation::Collections::IVector<SettingsLoadWarnings>& warnings)
     {
         auto title = RS_(L"SettingsValidateErrorTitle");
         auto buttonText = RS_(L"Ok");
@@ -502,7 +503,7 @@ namespace winrt::TerminalApp::implementation
         }
         else if (settingsLoadedResult == S_FALSE)
         {
-            _ShowLoadWarningsDialog(nullptr, _initialLoadResult.Warnings());
+            _ShowLoadWarningsDialog(_initialLoadResult.Warnings());
         }
     }
 
@@ -717,8 +718,8 @@ namespace winrt::TerminalApp::implementation
             //
             // contentBounds is in screen pixels, but that's okay! we want to
             // return screen pixels out of here. Nailed it.
-            const til::rect bounds = { til::math::rounding, _contentBounds.Value() };
-            initialPosition = { bounds.left, bounds.top };
+            const auto bounds = _contentBounds.Value();
+            initialPosition = { lroundf(bounds.X), lroundf(bounds.Y) };
         }
         return {
             initialPosition.X ? initialPosition.X.Value() : defaultInitialX,
@@ -803,7 +804,7 @@ namespace winrt::TerminalApp::implementation
             }
             else if (args.Result() == S_FALSE)
             {
-                _ShowLoadWarningsDialog(nullptr, args.Warnings());
+                _ShowLoadWarningsDialog(args.Warnings());
             }
             else if (args.Result() == S_OK)
             {
@@ -1332,6 +1333,41 @@ namespace winrt::TerminalApp::implementation
         }
     }
 
+    void TerminalWindow::_WindowSizeChanged(const IInspectable&, winrt::Microsoft::Terminal::Control::WindowSizeChangedEventArgs args)
+    {
+        winrt::Windows::Foundation::Size pixelSize = { static_cast<float>(args.Width()), static_cast<float>(args.Height()) };
+        const auto scale = static_cast<float>(DisplayInformation::GetForCurrentView().RawPixelsPerViewPixel());
+
+        if (!FocusMode())
+        {
+            if (!_settings.GlobalSettings().AlwaysShowTabs())
+            {
+                // Hide the title bar = off, Always show tabs = off.
+                static constexpr auto titlebarHeight = 10;
+                pixelSize.Height += (titlebarHeight)*scale;
+            }
+            else if (!_settings.GlobalSettings().ShowTabsInTitlebar())
+            {
+                // Hide the title bar = off, Always show tabs = on.
+                static constexpr auto titlebarAndTabBarHeight = 40;
+                pixelSize.Height += (titlebarAndTabBarHeight)*scale;
+            }
+            // Hide the title bar = on, Always show tabs = on.
+            // In this case, we don't add any height because
+            // NonClientIslandWindow::GetTotalNonClientExclusiveSize() gets
+            // called in AppHost::_resizeWindow and it already takes title bar
+            // height into account.  In other cases above
+            // IslandWindow::GetTotalNonClientExclusiveSize() is called, and it
+            // doesn't take the title bar height into account, so we have to do
+            // the calculation manually.
+        }
+
+        args.Width(static_cast<int32_t>(pixelSize.Width));
+        args.Height(static_cast<int32_t>(pixelSize.Height));
+
+        WindowSizeChanged.raise(*this, args);
+    }
+
     winrt::hstring WindowProperties::WindowName() const noexcept
     {
         return _WindowName;

src/cascadia/TerminalApp/TerminalWindow.h

@@ -162,6 +162,7 @@ namespace winrt::TerminalApp::implementation
         til::typed_event<Windows::Foundation::IInspectable, Windows::Foundation::IInspectable> IsQuakeWindowChanged;
         til::typed_event<winrt::Windows::Foundation::IInspectable, winrt::TerminalApp::SystemMenuChangeArgs> SystemMenuChangeRequested;
         til::typed_event<winrt::Windows::Foundation::IInspectable, winrt::TerminalApp::SettingsLoadEventArgs> SettingsChanged;
+        til::typed_event<winrt::Windows::Foundation::IInspectable, winrt::Microsoft::Terminal::Control::WindowSizeChangedEventArgs> WindowSizeChanged;
 
     private:
         // If you add controls here, but forget to null them either here or in
@@ -194,7 +195,7 @@ namespace winrt::TerminalApp::implementation
                                    const winrt::hstring& contentKey,
                                    HRESULT settingsLoadedResult,
                                    const winrt::hstring& exceptionText);
-        void _ShowLoadWarningsDialog(const IInspectable& sender, const Windows::Foundation::Collections::IVectorView<Microsoft::Terminal::Settings::Model::SettingsLoadWarnings>& warnings);
+        void _ShowLoadWarningsDialog(const Windows::Foundation::Collections::IVector<Microsoft::Terminal::Settings::Model::SettingsLoadWarnings>& warnings);
 
         bool _IsKeyboardServiceEnabled();
 
@@ -202,6 +203,7 @@ namespace winrt::TerminalApp::implementation
         void _OnLoaded(const IInspectable& sender, const Windows::UI::Xaml::RoutedEventArgs& eventArgs);
         void _pageInitialized(const IInspectable& sender, const IInspectable& eventArgs);
         void _OpenSettingsUI();
+        void _WindowSizeChanged(const IInspectable& sender, winrt::Microsoft::Terminal::Control::WindowSizeChangedEventArgs args);
 
         winrt::Windows::Foundation::Collections::IVector<Microsoft::Terminal::Settings::Model::ActionAndArgs> _contentStringToActions(const winrt::hstring& content,
                                                                                                                                       const bool replaceFirstWithNewTab);
@@ -223,6 +225,7 @@ namespace winrt::TerminalApp::implementation
         FORWARDED_TYPED_EVENT(IdentifyWindowsRequested, Windows::Foundation::IInspectable, Windows::Foundation::IInspectable, _root, IdentifyWindowsRequested);
         FORWARDED_TYPED_EVENT(RenameWindowRequested, Windows::Foundation::IInspectable, winrt::TerminalApp::RenameWindowRequestedArgs, _root, RenameWindowRequested);
         FORWARDED_TYPED_EVENT(SummonWindowRequested, Windows::Foundation::IInspectable, Windows::Foundation::IInspectable, _root, SummonWindowRequested);
+        FORWARDED_TYPED_EVENT(CloseRequested, Windows::Foundation::IInspectable, Windows::Foundation::IInspectable, _root, CloseRequested);
         FORWARDED_TYPED_EVENT(OpenSystemMenu, Windows::Foundation::IInspectable, Windows::Foundation::IInspectable, _root, OpenSystemMenu);
         FORWARDED_TYPED_EVENT(QuitRequested, Windows::Foundation::IInspectable, Windows::Foundation::IInspectable, _root, QuitRequested);
         FORWARDED_TYPED_EVENT(ShowWindowChanged, Windows::Foundation::IInspectable, winrt::Microsoft::Terminal::Control::ShowWindowArgs, _root, ShowWindowChanged);

src/cascadia/TerminalApp/TerminalWindow.idl

@@ -30,7 +30,7 @@ namespace TerminalApp
     {
         Boolean Reload { get; };
         UInt64 Result { get; };
-        IVectorView<Microsoft.Terminal.Settings.Model.SettingsLoadWarnings> Warnings { get; };
+        IVector<Microsoft.Terminal.Settings.Model.SettingsLoadWarnings> Warnings { get; };
         String ExceptionText { get; };
 
         Microsoft.Terminal.Settings.Model.CascadiaSettings NewSettings { get; };
@@ -127,10 +127,12 @@ namespace TerminalApp
         event Windows.Foundation.TypedEventHandler<Object, RenameWindowRequestedArgs> RenameWindowRequested;
         event Windows.Foundation.TypedEventHandler<Object, Object> IsQuakeWindowChanged;
         event Windows.Foundation.TypedEventHandler<Object, Object> SummonWindowRequested;
+        event Windows.Foundation.TypedEventHandler<Object, Object> CloseRequested;
         event Windows.Foundation.TypedEventHandler<Object, Object> OpenSystemMenu;
         event Windows.Foundation.TypedEventHandler<Object, Object> QuitRequested;
         event Windows.Foundation.TypedEventHandler<Object, TerminalApp.SystemMenuChangeArgs> SystemMenuChangeRequested;
         event Windows.Foundation.TypedEventHandler<Object, Microsoft.Terminal.Control.ShowWindowArgs> ShowWindowChanged;
+        event Windows.Foundation.TypedEventHandler<Object, Microsoft.Terminal.Control.WindowSizeChangedEventArgs> WindowSizeChanged;
 
         event Windows.Foundation.TypedEventHandler<Object, SettingsLoadEventArgs> SettingsChanged;
 

src/cascadia/TerminalApp/dll/TerminalApp.vcxproj

@@ -11,7 +11,6 @@
     <!-- sets a bunch of Windows Universal properties -->
     <OpenConsoleUniversalApp>true</OpenConsoleUniversalApp>
     <PgoTarget>true</PgoTarget>
-    <VersionInfoFileDescription>Windows Terminal Main UI Library</VersionInfoFileDescription>
   </PropertyGroup>
   <PropertyGroup Label="NuGet Dependencies">
     <TerminalCppWinrt>true</TerminalCppWinrt>
@@ -70,6 +69,7 @@
     <ProjectReference Include="$(OpenConsoleDir)src\cascadia\TerminalControl\dll\TerminalControl.vcxproj" />
     <ProjectReference Include="$(OpenConsoleDir)src\cascadia\TerminalSettingsEditor\Microsoft.Terminal.Settings.Editor.vcxproj" />
     <ProjectReference Include="$(OpenConsoleDir)src\cascadia\TerminalSettingsModel\dll\Microsoft.Terminal.Settings.Model.vcxproj" />
+    <ProjectReference Include="$(OpenConsoleDir)src\cascadia\UIMarkdown\UIMarkdown.vcxproj" />
     <ProjectReference Include="$(OpenConsoleDir)src\cascadia\UIHelpers\UIHelpers.vcxproj">
       <Project>{6515F03F-E56D-4DB4-B23D-AC4FB80DB36F}</Project>
     </ProjectReference>

src/cascadia/TerminalApp/pch.h

@@ -27,7 +27,6 @@
 
 #include <winrt/Windows.ApplicationModel.h>
 #include <winrt/Windows.ApplicationModel.DataTransfer.h>
-#include <winrt/Windows.ApplicationModel.Resources.Core.h>
 #include <winrt/Windows.Foundation.h>
 #include <winrt/Windows.Foundation.Collections.h>
 #include <winrt/Windows.Foundation.Metadata.h>
@@ -64,6 +63,8 @@
 #include <winrt/Microsoft.Terminal.Settings.Editor.h>
 #include <winrt/Microsoft.Terminal.Settings.Model.h>
 #include <winrt/Microsoft.Terminal.UI.h>
+#include <winrt/Microsoft.Terminal.UI.Markdown.h>
+
 #include <winrt/Windows.Services.Store.h>
 #include <winrt/Windows.Storage.h>
 #include <winrt/Windows.Storage.Provider.h>

src/cascadia/TerminalAzBridge/TerminalAzBridge.vcxproj

@@ -11,7 +11,6 @@
     <OpenConsoleUniversalApp>false</OpenConsoleUniversalApp>
     <ApplicationType>Windows Store</ApplicationType>
     <TargetPlatformIdentifier>Windows</TargetPlatformIdentifier>
-    <VersionInfoFileDescription>Windows Terminal Azure Cloud Shell Connector</VersionInfoFileDescription>
   </PropertyGroup>
 
   <PropertyGroup Label="NuGet Dependencies">

src/cascadia/TerminalConnection/CTerminalHandoff.cpp

@@ -14,13 +14,6 @@ static DWORD g_cTerminalHandoffRegistration = 0;
 // Mutex so we only do start/stop/establish one at a time.
 static std::shared_mutex _mtx;
 
-// This is the callback that will be called when a connection is received.
-// Call this once during startup and don't ever change it again (race condition).
-void CTerminalHandoff::s_setCallback(NewHandoffFunction callback) noexcept
-{
-    _pfnHandoff = callback;
-}
-
 // Routine Description:
 // - Starts listening for TerminalHandoff requests by registering
 //   our class and interface with COM.
@@ -28,19 +21,24 @@ void CTerminalHandoff::s_setCallback(NewHandoffFunction callback) noexcept
 // - pfnHandoff - Function to callback when a handoff is received
 // Return Value:
 // - S_OK, E_NOT_VALID_STATE (start called when already started) or relevant COM registration error.
-HRESULT CTerminalHandoff::s_StartListening()
+HRESULT CTerminalHandoff::s_StartListening(NewHandoffFunction pfnHandoff)
 try
 {
     std::unique_lock lock{ _mtx };
 
+    RETURN_HR_IF(E_NOT_VALID_STATE, _pfnHandoff != nullptr);
+
     const auto classFactory = Make<SimpleClassFactory<CTerminalHandoff>>();
-    RETURN_LAST_ERROR_IF_NULL(classFactory);
+
+    RETURN_IF_NULL_ALLOC(classFactory);
 
     ComPtr<IUnknown> unk;
     RETURN_IF_FAILED(classFactory.As(&unk));
 
     RETURN_IF_FAILED(CoRegisterClassObject(__uuidof(CTerminalHandoff), unk.Get(), CLSCTX_LOCAL_SERVER, REGCLS_SINGLEUSE, &g_cTerminalHandoffRegistration));
 
+    _pfnHandoff = pfnHandoff;
+
     return S_OK;
 }
 CATCH_RETURN()
@@ -55,6 +53,15 @@ CATCH_RETURN()
 HRESULT CTerminalHandoff::s_StopListening()
 {
     std::unique_lock lock{ _mtx };
+    return s_StopListeningLocked();
+}
+
+// See s_StopListening()
+HRESULT CTerminalHandoff::s_StopListeningLocked()
+{
+    RETURN_HR_IF_NULL(E_NOT_VALID_STATE, _pfnHandoff);
+
+    _pfnHandoff = nullptr;
 
     if (g_cTerminalHandoffRegistration)
     {
@@ -85,15 +92,22 @@ HRESULT CTerminalHandoff::EstablishPtyHandoff(HANDLE* in, HANDLE* out, HANDLE si
 {
     try
     {
+        std::unique_lock lock{ _mtx };
+
+        // s_StopListeningLocked sets _pfnHandoff to nullptr.
+        // localPfnHandoff is tested for nullness below.
+#pragma warning(suppress : 26429) // Symbol '...' is never tested for nullness, it can be marked as not_null (f.23).
+        auto localPfnHandoff = _pfnHandoff;
+
         // Because we are REGCLS_SINGLEUSE... we need to `CoRevokeClassObject` after we handle this ONE call.
         // COM does not automatically clean that up for us. We must do it.
-        LOG_IF_FAILED(s_StopListening());
+        LOG_IF_FAILED(s_StopListeningLocked());
 
         // Report an error if no one registered a handoff function before calling this.
-        THROW_HR_IF_NULL(E_NOT_VALID_STATE, _pfnHandoff);
+        THROW_HR_IF_NULL(E_NOT_VALID_STATE, localPfnHandoff);
 
         // Call registered handler from when we started listening.
-        THROW_IF_FAILED(_pfnHandoff(in, out, signal, reference, server, client, startupInfo));
+        THROW_IF_FAILED(localPfnHandoff(in, out, signal, reference, server, client, startupInfo));
 
 #pragma warning(suppress : 26477)
         TraceLoggingWrite(

src/cascadia/TerminalConnection/CTerminalHandoff.h

@@ -38,11 +38,11 @@ struct __declspec(uuid(__CLSID_CTerminalHandoff))
 
 #pragma endregion
 
-    static void s_setCallback(NewHandoffFunction callback) noexcept;
-    static HRESULT s_StartListening();
+    static HRESULT s_StartListening(NewHandoffFunction pfnHandoff);
+    static HRESULT s_StopListening();
 
 private:
-    static HRESULT s_StopListening();
+    static HRESULT s_StopListeningLocked();
 };
 
 // Disable warnings from the CoCreatableClass macro as the value it provides for

src/cascadia/TerminalConnection/ConptyConnection.cpp

@@ -313,13 +313,6 @@ namespace winrt::Microsoft::Terminal::TerminalConnection::implementation
         }
         CATCH_LOG()
 
-        try
-        {
-            auto processImageName{ wil::QueryFullProcessImageNameW<std::wstring>(_piClient.hProcess) };
-            _clientName = std::filesystem::path{ std::move(processImageName) }.filename().wstring();
-        }
-        CATCH_LOG()
-
         _pipe = std::move(pipe.server);
         *in = pipe.client.release();
         *out = pipeClientClone.release();
@@ -435,20 +428,6 @@ namespace winrt::Microsoft::Terminal::TerminalConnection::implementation
             TerminalOutput.raise(L"\r\n");
             TerminalOutput.raise(badPathText);
         }
-        // If the requested action requires elevation, display appropriate message
-        else if (hr == HRESULT_FROM_WIN32(ERROR_ELEVATION_REQUIRED))
-        {
-            const auto elevationText = RS_(L"ElevationRequired");
-            TerminalOutput.raise(L"\r\n");
-            TerminalOutput.raise(elevationText);
-        }
-        // If the requested executable was not found, display appropriate message
-        else if (hr == HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND))
-        {
-            const auto fileNotFoundText = RS_(L"FileNotFound");
-            TerminalOutput.raise(L"\r\n");
-            TerminalOutput.raise(fileNotFoundText);
-        }
 
         _transitionToState(ConnectionState::Failed);
 
@@ -555,13 +534,21 @@ namespace winrt::Microsoft::Terminal::TerminalConnection::implementation
         }
     }
 
-    void ConptyConnection::ClearBuffer(bool keepCursorRow)
+    void ConptyConnection::ResetSize()
+    {
+        if (_isConnected())
+        {
+            THROW_IF_FAILED(ConptyResizePseudoConsole(_hPC.get(), { Utils::ClampToShortMax(_cols, 1), Utils::ClampToShortMax(_rows, 1) }));
+        }
+    }
+
+    void ConptyConnection::ClearBuffer()
     {
         // If we haven't connected yet, then we really don't need to do
         // anything. The connection should already start clear!
         if (_isConnected())
         {
-            THROW_IF_FAILED(ConptyClearPseudoConsole(_hPC.get(), keepCursorRow));
+            THROW_IF_FAILED(ConptyClearPseudoConsole(_hPC.get()));
         }
     }
 
@@ -793,12 +780,12 @@ namespace winrt::Microsoft::Terminal::TerminalConnection::implementation
 
     void ConptyConnection::StartInboundListener()
     {
-        static const auto init = []() noexcept {
-            CTerminalHandoff::s_setCallback(&ConptyConnection::NewHandoff);
-            return true;
-        }();
+        THROW_IF_FAILED(CTerminalHandoff::s_StartListening(&ConptyConnection::NewHandoff));
+    }
 
-        CTerminalHandoff::s_StartListening();
+    void ConptyConnection::StopInboundListener()
+    {
+        THROW_IF_FAILED(CTerminalHandoff::s_StopListening());
     }
 
     // Function Description:

src/cascadia/TerminalConnection/ConptyConnection.h

@@ -23,8 +23,9 @@ namespace winrt::Microsoft::Terminal::TerminalConnection::implementation
         void Start();
         void WriteInput(const winrt::array_view<const char16_t> buffer);
         void Resize(uint32_t rows, uint32_t columns);
+        void ResetSize();
         void Close() noexcept;
-        void ClearBuffer(bool keepCursorRow);
+        void ClearBuffer();
 
         void ShowHide(const bool show);
 
@@ -35,6 +36,7 @@ namespace winrt::Microsoft::Terminal::TerminalConnection::implementation
         WORD ShowWindow() const noexcept;
 
         static void StartInboundListener();
+        static void StopInboundListener();
 
         static winrt::event_token NewConnection(const NewConnectionHandler& handler);
         static void NewConnection(const winrt::event_token& token);

src/cascadia/TerminalConnection/ConptyConnection.idl

@@ -14,7 +14,8 @@ namespace Microsoft.Terminal.TerminalConnection
         String StartingTitle { get; };
         UInt16 ShowWindow { get; };
 
-        void ClearBuffer(Boolean keepCursorRow);
+        void ResetSize();
+        void ClearBuffer();
 
         void ShowHide(Boolean show);
 
@@ -22,6 +23,7 @@ namespace Microsoft.Terminal.TerminalConnection
 
         static event NewConnectionHandler NewConnection;
         static void StartInboundListener();
+        static void StopInboundListener();
 
         static Windows.Foundation.Collections.ValueSet CreateSettings(String cmdline,
                                                                       String startingDirectory,

src/cascadia/TerminalConnection/Resources/de-DE/Resources.resw

@@ -209,7 +209,7 @@
   </data>
   <data name="CtrlDToClose" xml:space="preserve">
     <value>Sie können dieses Terminal jetzt mit STRG+D schließen oder zum Neustart die EINGABETASTE drücken.</value>
-    <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
+	  <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
   </data>
   <data name="ProcessFailedToLaunch" xml:space="preserve">
     <value>[Fehler {0} beim Start von `{1}']</value>
@@ -220,10 +220,4 @@
     <value>Auf das Startverzeichnis „{0}“ konnte nicht zugegriffen werden</value>
     <comment>The first argument {0} is a path to a directory on the filesystem, as provided by the user.</comment>
   </data>
-  <data name="ElevationRequired" xml:space="preserve">
-    <value>Für den angeforderten Vorgang sind erhöhte Rechte erforderlich.</value>
-  </data>
-  <data name="FileNotFound" xml:space="preserve">
-    <value>Die angegebene Datei wurde nicht gefunden.</value>
-  </data>
 </root>

src/cascadia/TerminalConnection/Resources/en-US/Resources.resw

@@ -209,7 +209,7 @@
   </data>
   <data name="CtrlDToClose" xml:space="preserve">
     <value>You can now close this terminal with Ctrl+D, or press Enter to restart.</value>
-    <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
+	  <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
   </data>
   <data name="ProcessFailedToLaunch" xml:space="preserve">
     <value>[error {0} when launching `{1}']</value>
@@ -220,10 +220,4 @@
     <value>Could not access starting directory "{0}"</value>
     <comment>The first argument {0} is a path to a directory on the filesystem, as provided by the user.</comment>
   </data>
-  <data name="ElevationRequired" xml:space="preserve">
-    <value>The requested operation requires elevation.</value>
-  </data>
-  <data name="FileNotFound" xml:space="preserve">
-    <value>The system cannot find the file specified.</value>
-  </data>
-</root>
+</root>

src/cascadia/TerminalConnection/Resources/es-ES/Resources.resw

@@ -209,7 +209,7 @@
   </data>
   <data name="CtrlDToClose" xml:space="preserve">
     <value>Ahora puede cerrar este terminal con Ctrl+D o presionar Entrar para reiniciar.</value>
-    <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
+	  <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
   </data>
   <data name="ProcessFailedToLaunch" xml:space="preserve">
     <value>[error {0} al iniciar `{1}']</value>
@@ -220,10 +220,4 @@
     <value>No se pudo obtener acceso al directorio inicial «{0}»</value>
     <comment>The first argument {0} is a path to a directory on the filesystem, as provided by the user.</comment>
   </data>
-  <data name="ElevationRequired" xml:space="preserve">
-    <value>La operación solicitada requiere elevación.</value>
-  </data>
-  <data name="FileNotFound" xml:space="preserve">
-    <value>El sistema no puede encontrar el archivo especificado.</value>
-  </data>
 </root>

src/cascadia/TerminalConnection/Resources/fr-FR/Resources.resw

@@ -209,7 +209,7 @@
   </data>
   <data name="CtrlDToClose" xml:space="preserve">
     <value>Vous pouvez maintenant fermer ce terminal avec Ctrl+D, ou appuyez sur Entrée pour redémarrer.</value>
-    <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
+	  <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
   </data>
   <data name="ProcessFailedToLaunch" xml:space="preserve">
     <value>[erreur {0} lors du lancement de `{1}']</value>
@@ -220,10 +220,4 @@
     <value>Le démarrage du répertoire n’est pas accessible «{0}»</value>
     <comment>The first argument {0} is a path to a directory on the filesystem, as provided by the user.</comment>
   </data>
-  <data name="ElevationRequired" xml:space="preserve">
-    <value>L’opération demandée nécessite une élévation.</value>
-  </data>
-  <data name="FileNotFound" xml:space="preserve">
-    <value>Le fichier spécifié est introuvable.</value>
-  </data>
 </root>

src/cascadia/TerminalConnection/Resources/it-IT/Resources.resw

@@ -209,7 +209,7 @@
   </data>
   <data name="CtrlDToClose" xml:space="preserve">
     <value>È ora possibile chiudere il terminale con CTRL+D oppure premere INVIO per riavviarlo.</value>
-    <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
+	  <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
   </data>
   <data name="ProcessFailedToLaunch" xml:space="preserve">
     <value>[errore {0} durante l'avvio di `{1}']</value>
@@ -220,10 +220,4 @@
     <value>Non è possibile accedere alla directory di avvio "{0}"</value>
     <comment>The first argument {0} is a path to a directory on the filesystem, as provided by the user.</comment>
   </data>
-  <data name="ElevationRequired" xml:space="preserve">
-    <value>Per l'operazione richiesta è necessaria l'elevazione dei privilegi.</value>
-  </data>
-  <data name="FileNotFound" xml:space="preserve">
-    <value>Impossibile trovare il file specificato.</value>
-  </data>
 </root>

src/cascadia/TerminalConnection/Resources/ja-JP/Resources.resw

@@ -209,7 +209,7 @@
   </data>
   <data name="CtrlDToClose" xml:space="preserve">
     <value>このターミナルを Ctrl+D で閉じるか、Enter キーを押して再起動できます。</value>
-    <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
+	  <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
   </data>
   <data name="ProcessFailedToLaunch" xml:space="preserve">
     <value>['{1}' の起動時にエラー {0} が発生しました]</value>
@@ -220,10 +220,4 @@
     <value>先頭のディレクトリ "{0}" にアクセスできませんでした</value>
     <comment>The first argument {0} is a path to a directory on the filesystem, as provided by the user.</comment>
   </data>
-  <data name="ElevationRequired" xml:space="preserve">
-    <value>要求された操作には、権限の昇格が必要です。</value>
-  </data>
-  <data name="FileNotFound" xml:space="preserve">
-    <value>指定されたファイルが見つかりません。</value>
-  </data>
 </root>

src/cascadia/TerminalConnection/Resources/ko-KR/Resources.resw

@@ -209,7 +209,7 @@
   </data>
   <data name="CtrlDToClose" xml:space="preserve">
     <value>이제 Ctrl+D 이 터미널을 닫거나 Enter 키를 눌러 다시 시작할 수 있습니다.</value>
-    <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
+	  <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
   </data>
   <data name="ProcessFailedToLaunch" xml:space="preserve">
     <value>[’{1}' 시작 시 {0} 오류 발생]</value>
@@ -220,10 +220,4 @@
     <value>시작 디렉터리 "{0}"에 액세스할 수 없습니다.</value>
     <comment>The first argument {0} is a path to a directory on the filesystem, as provided by the user.</comment>
   </data>
-  <data name="ElevationRequired" xml:space="preserve">
-    <value>요청한 작업을 수행하려면 권한 상승이 필요합니다.</value>
-  </data>
-  <data name="FileNotFound" xml:space="preserve">
-    <value>시스템에서 지정된 파일을 찾을 수 없습니다.</value>
-  </data>
 </root>

src/cascadia/TerminalConnection/Resources/pt-BR/Resources.resw

@@ -209,7 +209,7 @@
   </data>
   <data name="CtrlDToClose" xml:space="preserve">
     <value>Agora você pode fechar este terminal com Ctrl+D ou pressione Enter para reiniciar.</value>
-    <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
+	  <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
   </data>
   <data name="ProcessFailedToLaunch" xml:space="preserve">
     <value>[erro {0} ao iniciar "{1}"]</value>
@@ -220,10 +220,4 @@
     <value>Não foi possível acessar o diretório inicial "{0}"</value>
     <comment>The first argument {0} is a path to a directory on the filesystem, as provided by the user.</comment>
   </data>
-  <data name="ElevationRequired" xml:space="preserve">
-    <value>A operação solicitada exige elevação.</value>
-  </data>
-  <data name="FileNotFound" xml:space="preserve">
-    <value>O sistema não pode encontrar o arquivo especificado.</value>
-  </data>
 </root>

src/cascadia/TerminalConnection/Resources/qps-ploc/Resources.resw

@@ -209,7 +209,7 @@
   </data>
   <data name="CtrlDToClose" xml:space="preserve">
     <value>Ỳóŭ ćǻή иòω сĺøѕè ťнįş тёѓмîήªŀ ωīťђ Çťѓℓ+Ď, όг ргéšѕ Σñтèř το ґèšтªят. !!! !!! !!! !!! !!! !!! !!!</value>
-    <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
+	  <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
   </data>
   <data name="ProcessFailedToLaunch" xml:space="preserve">
     <value>[℮ѓѓŏŕ {0} ωĥєй łåύñćђίηğ `{1}'] !!! !!! !!! </value>
@@ -220,10 +220,4 @@
     <value>Ċőŭľđ йōť ª¢čеѕş şτāŗťΐиğ ðιѓεςтоŗγ "{0}" !!! !!! !!! !!!</value>
     <comment>The first argument {0} is a path to a directory on the filesystem, as provided by the user.</comment>
   </data>
-  <data name="ElevationRequired" xml:space="preserve">
-    <value>Ţнė ŗēqμĕѕŧєđ ôφ℮ґάтĩöй ŕєqΰїŗęś ėĺęνáτîøŋ. !!! !!! !!! !!! </value>
-  </data>
-  <data name="FileNotFound" xml:space="preserve">
-    <value>Ŧнё şγśţêм ςâлηόť ƒїлď ŧнэ ƒΐĺë śрéćιƒієð. !!! !!! !!! !!! </value>
-  </data>
-</root>
+</root>

src/cascadia/TerminalConnection/Resources/qps-ploca/Resources.resw

@@ -209,7 +209,7 @@
   </data>
   <data name="CtrlDToClose" xml:space="preserve">
     <value>Ỳóŭ ćǻή иòω сĺøѕè ťнįş тёѓмîήªŀ ωīťђ Çťѓℓ+Ď, όг ргéšѕ Σñтèř το ґèšтªят. !!! !!! !!! !!! !!! !!! !!!</value>
-    <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
+	  <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
   </data>
   <data name="ProcessFailedToLaunch" xml:space="preserve">
     <value>[℮ѓѓŏŕ {0} ωĥєй łåύñćђίηğ `{1}'] !!! !!! !!! </value>
@@ -220,10 +220,4 @@
     <value>Ċőŭľđ йōť ª¢čеѕş şτāŗťΐиğ ðιѓεςтоŗγ "{0}" !!! !!! !!! !!!</value>
     <comment>The first argument {0} is a path to a directory on the filesystem, as provided by the user.</comment>
   </data>
-  <data name="ElevationRequired" xml:space="preserve">
-    <value>Ţнė ŗēqμĕѕŧєđ ôφ℮ґάтĩöй ŕєqΰїŗęś ėĺęνáτîøŋ. !!! !!! !!! !!! </value>
-  </data>
-  <data name="FileNotFound" xml:space="preserve">
-    <value>Ŧнё şγśţêм ςâлηόť ƒїлď ŧнэ ƒΐĺë śрéćιƒієð. !!! !!! !!! !!! </value>
-  </data>
-</root>
+</root>

src/cascadia/TerminalConnection/Resources/qps-plocm/Resources.resw

@@ -209,7 +209,7 @@
   </data>
   <data name="CtrlDToClose" xml:space="preserve">
     <value>Ỳóŭ ćǻή иòω сĺøѕè ťнįş тёѓмîήªŀ ωīťђ Çťѓℓ+Ď, όг ргéšѕ Σñтèř το ґèšтªят. !!! !!! !!! !!! !!! !!! !!!</value>
-    <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
+	  <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
   </data>
   <data name="ProcessFailedToLaunch" xml:space="preserve">
     <value>[℮ѓѓŏŕ {0} ωĥєй łåύñćђίηğ `{1}'] !!! !!! !!! </value>
@@ -220,10 +220,4 @@
     <value>Ċőŭľđ йōť ª¢čеѕş şτāŗťΐиğ ðιѓεςтоŗγ "{0}" !!! !!! !!! !!!</value>
     <comment>The first argument {0} is a path to a directory on the filesystem, as provided by the user.</comment>
   </data>
-  <data name="ElevationRequired" xml:space="preserve">
-    <value>Ţнė ŗēqμĕѕŧєđ ôφ℮ґάтĩöй ŕєqΰїŗęś ėĺęνáτîøŋ. !!! !!! !!! !!! </value>
-  </data>
-  <data name="FileNotFound" xml:space="preserve">
-    <value>Ŧнё şγśţêм ςâлηόť ƒїлď ŧнэ ƒΐĺë śрéćιƒієð. !!! !!! !!! !!! </value>
-  </data>
-</root>
+</root>

src/cascadia/TerminalConnection/Resources/ru-RU/Resources.resw

@@ -209,7 +209,7 @@
   </data>
   <data name="CtrlDToClose" xml:space="preserve">
     <value>Теперь вы можете закрыть этот терминал с помощью клавиш CTRL+D. Или нажмите клавишу ВВОД для перезапуска.</value>
-    <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
+	  <comment>"Ctrl+D" and "Enter" represent keys the user will press (control+D and Enter).</comment>
   </data>
   <data name="ProcessFailedToLaunch" xml:space="preserve">
     <value>[ошибка {0} при запуске "{1}"]</value>
@@ -220,10 +220,4 @@
     <value>Не удалось получить доступ к запуску каталога "{0}"</value>
     <comment>The first argument {0} is a path to a directory on the filesystem, as provided by the user.</comment>
   </data>
-  <data name="ElevationRequired" xml:space="preserve">
-    <value>Запрошенная операция требует получения дополнительных прав.</value>
-  </data>
-  <data name="FileNotFound" xml:space="preserve">
-    <value>Не удается найти указанный файл.</value>
-  </data>
 </root>