Migrate spelling-0.0.21 changes from main

This pull request switches up the treatment we use for pattern-detected
links and OSC 8 hyperlinks:

* Links generated via OSC 8 have a sparse dotted underline instead of a
  thick dashed one
* Links generated by pattern detection _are not underlined until they've
  hovered_
   * This papers over a visual glitch that is a result of us updating
     the pattern matches every ~500ms (on change)

Closes #8123

.github/linters/.markdown-lint.yml

@@ -0,0 +1,42 @@
+---
+###########################
+###########################
+## Markdown Linter rules ##
+###########################
+###########################
+
+# Linter rules doc:
+# - https://github.com/DavidAnson/markdownlint
+#
+# Note:
+# To comment out a single error:
+#   <!-- markdownlint-disable -->
+#   any violations you want
+#   <!-- markdownlint-restore -->
+#
+# To run the linter locally:
+# 1. install the npm package:
+#    `npm install -g markdownlint-cli`
+# 2. Then run it in the root of the repo with
+#    `markdownlint -c .github\linters\.markdown-lint.yml ./*.md`
+
+###############
+# Rules by id #
+###############
+MD004: false                  # Unordered list style
+MD007:
+  indent: 2                   # Unordered list indentation
+MD013:
+  line_length: 400            # Line length 80 is far to short
+MD024: false                  # Allow multiple headings with same content
+MD026:
+  punctuation: ".,;:!。，；:"  # List of not allowed
+MD029: false                  # Ordered list item prefix
+MD033: false                  # Allow inline HTML
+MD036: false                  # Emphasis used instead of a heading
+MD040: false                  # Allow ``` blocks in md files with no language specified
+
+#################
+# Rules by tags #
+#################
+blank_lines: false  # Error on blank lines

.github/workflows/linter.yml

@@ -0,0 +1,57 @@
+---
+###########################
+###########################
+## Linter GitHub Actions ##
+###########################
+###########################
+name: Lint Code Base
+
+#
+# Documentation:
+# https://help.github.com/en/articles/workflow-syntax-for-github-actions
+#
+
+###################################################
+# The linter is noisy; we used to run it on push. #
+###################################################
+#
+#on:
+#  pull_request:
+#    branches: [main]
+
+###############
+# Set the Job #
+###############
+jobs:
+  build:
+    # Name the Job
+    name: Lint Code Base
+    # Set the agent to run on
+    runs-on: ubuntu-latest
+
+    ##################
+    # Load all steps #
+    ##################
+    steps:
+      ##########################
+      # Checkout the code base #
+      ##########################
+      - name: Checkout Code
+        uses: actions/checkout@v2
+        with:
+          # Full git history is needed to get a proper list of changed files within `super-linter`
+          fetch-depth: 0
+
+      ################################
+      # Run Linter against code base #
+      ################################
+      - name: Lint Code Base
+        uses: github/super-linter@v3
+        env:
+          VALIDATE_ALL_CODEBASE: false
+          DEFAULT_BRANCH: main
+          MARKDOWN_CONFIG_FILE: .markdown-lint.yml
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          VALIDATE_EDITORCONFIG: false
+          # The json linter doesn't like JSONC, which we use all over. So just disable it.
+          VALIDATE_JSON: false

CONTRIBUTING.md

@@ -14,7 +14,7 @@ The point of doing all this work in public is to ensure that we are holding ours
 
 The team triages new issues several times a week. During triage, the team uses labels to categorize, manage, and drive the project workflow.
 
-We employ [a bot engine](https://github.com/microsoft/terminal/blob/master/doc/bot.md) to help us automate common processes within our workflow.
+We employ [a bot engine](https://github.com/microsoft/terminal/blob/main/doc/bot.md) to help us automate common processes within our workflow.
 
 We drive the bot by tagging issues with specific labels which cause the bot engine to close issues, merge branches, etc. This bot engine helps us keep the repo clean by automating the process of notifying appropriate parties if/when information/follow-up is needed, and closing stale issues/PRs after reminders have remained unanswered for several days.
 
@@ -140,6 +140,13 @@ Once you've discussed your proposed feature/fix/etc. with a team member, and you
 1. Create & push a feature branch
 1. Create a [Draft Pull Request (PR)](https://github.blog/2019-02-14-introducing-draft-pull-requests/)
 1. Work on your changes
+1. Build and see if it works. Consult [How to build OpenConsole](./doc/building.md) if you have problems.
+
+### Testing
+
+Testing is a key component in the development workflow. Both Windows Terminal and Windows Console use TAEF(the Test Authoring and Execution Framework) as the main framework for testing.
+
+If your changes affect existing test cases, or you're working on brand new features and also the accompanying test cases, see [TAEF](./doc/TAEF.md) for more information about how to validate your work locally.
 
 ### Code Review
 
@@ -149,7 +156,7 @@ When you'd like the team to take a look, (even if the work is not yet fully-comp
 
 ### Merge
 
-Once your code has been reviewed and approved by the requisite number of team members, it will be merged into the master branch. Once merged, your PR will be automatically closed.
+Once your code has been reviewed and approved by the requisite number of team members, it will be merged into the main branch. Once merged, your PR will be automatically closed.
 
 ---
 

NOTICE.md

@@ -2,7 +2,7 @@
 Do Not Translate or Localize
 
 This software incorporates material from third parties. Microsoft makes certain
-open source code available at http://3rdpartysource.microsoft.com, or you may
+open source code available at [http://3rdpartysource.microsoft.com](http://3rdpartysource.microsoft.com), or you may
 send a check or money order for US $5.00, including the product name, the open
 source component name, and version number, to:
 
@@ -20,7 +20,7 @@ General Public License.
 
 ## jsoncpp
 
-**Source**: https://github.com/open-source-parsers/jsoncpp
+**Source**: [https://github.com/open-source-parsers/jsoncpp](https://github.com/open-source-parsers/jsoncpp)
 
 ### License
 
@@ -50,7 +50,7 @@ SOFTWARE.
 
 ## chromium/base/numerics
 
-**Source**: https://github.com/chromium/chromium/tree/master/base/numerics
+**Source**: [https://github.com/chromium/chromium/tree/master/base/numerics](https://github.com/chromium/chromium/tree/master/base/numerics)
 
 ### License
 
@@ -86,7 +86,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ## kimwalisch/libpopcnt
 
-**Source**: https://github.com/kimwalisch/libpopcnt
+**Source**: [https://github.com/kimwalisch/libpopcnt](https://github.com/kimwalisch/libpopcnt)
 
 ### License
 
@@ -122,7 +122,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ## dynamic_bitset
 
-**Source**: https://github.com/pinam45/dynamic_bitset
+**Source**: [https://github.com/pinam45/dynamic_bitset](https://github.com/pinam45/dynamic_bitset)
 
 ### License
 
@@ -151,9 +151,9 @@ SOFTWARE.
 
 ```
 
-## {fmt}
+## \{fmt\}
 
-**Source**: https://github.com/fmtlib/fmt
+**Source**: [https://github.com/fmtlib/fmt](https://github.com/fmtlib/fmt)
 
 ### License
 
@@ -188,3 +188,32 @@ of this Software are embedded into a machine-executable object form of such
 source code, you may redistribute such embedded portions in such object form
 without including the above copyright and permission notices.
 ```
+
+## interval_tree
+
+**Source**: [https://github.com/ekg/IntervalTree](https://github.com/ekg/IntervalTree)
+
+### License
+
+```
+Copyright (c) 2011 Erik Garrison
+
+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.
+
+```

README.md

@@ -6,22 +6,26 @@ This repository contains the source code for:
 * [Windows Terminal Preview](https://aka.ms/terminal-preview)
 * The Windows console host (`conhost.exe`)
 * Components shared between the two projects
-* [ColorTool](https://github.com/Microsoft/Terminal/tree/master/src/tools/ColorTool)
-* [Sample projects](https://github.com/Microsoft/Terminal/tree/master/samples) that show how to consume the Windows Console APIs
+* [ColorTool](https://github.com/microsoft/terminal/tree/main/src/tools/ColorTool)
+* [Sample projects](https://github.com/microsoft/terminal/tree/main/samples)
+  that show how to consume the Windows Console APIs
 
 Related repositories include:
 
-* [Windows Terminal Documentation](https://docs.microsoft.com/windows/terminal) ([Repo: Contribute to the docs](https://github.com/MicrosoftDocs/terminal))
+* [Windows Terminal Documentation](https://docs.microsoft.com/windows/terminal)
+  ([Repo: Contribute to the docs](https://github.com/MicrosoftDocs/terminal))
 * [Console API Documentation](https://github.com/MicrosoftDocs/Console-Docs)
 * [Cascadia Code Font](https://github.com/Microsoft/Cascadia-Code)
 
 ## Installing and running Windows Terminal
 
-> 👉 Note: Windows Terminal requires Windows 10 1903 (build 18362) or later
+> 🔴 Note: Windows Terminal requires Windows 10 1903 (build 18362) or later
 
 ### Microsoft Store [Recommended]
 
-Install the [Windows Terminal from the Microsoft Store][store-install-link]. This allows you to always be on the latest version when we release new builds with automatic upgrades.
+Install the [Windows Terminal from the Microsoft Store][store-install-link].
+This allows you to always be on the latest version when we release new builds
+with automatic upgrades.
 
 This is our preferred method.
 
@@ -29,16 +33,21 @@ This is our preferred method.
 
 #### Via GitHub
 
-For users who are unable to install Terminal from the Microsoft Store, Terminal builds can be manually downloaded from this repository's [Releases page](https://github.com/microsoft/terminal/releases).
+For users who are unable to install Terminal from the Microsoft Store, Terminal
+builds can be manually downloaded from this repository's [Releases
+page](https://github.com/microsoft/terminal/releases).
 
-> ⚠ Note: If you install Terminal manually:
+> 🔴 Note: If you install Terminal manually:
 >
-> * Be sure to install the [Desktop Bridge VC++ v14 Redistributable Package](https://www.microsoft.com/en-us/download/details.aspx?id=53175) otherwise Terminal may not install and/or run and may crash at startup
-> * Terminal will not auto-update when new builds are released so you will need to regularly install the latest Terminal release to receive all the latest fixes and improvements!
+> * Terminal will not auto-update when new builds are released so you will need
+>   to regularly install the latest Terminal release to receive all the latest
+>   fixes and improvements!
 
 #### Via Windows Package Manager CLI (aka winget)
 
-[winget](https://github.com/microsoft/winget-cli) users can download and install the latest Terminal release by installing the `Microsoft.WindowsTerminal` package:
+[winget](https://github.com/microsoft/winget-cli) users can download and install
+the latest Terminal release by installing the `Microsoft.WindowsTerminal`
+package:
 
 ```powershell
 winget install --id=Microsoft.WindowsTerminal -e
@@ -46,7 +55,8 @@ winget install --id=Microsoft.WindowsTerminal -e
 
 #### Via Chocolatey (unofficial)
 
-[Chocolatey](https://chocolatey.org) users can download and install the latest Terminal release by installing the `microsoft-windows-terminal` package:
+[Chocolatey](https://chocolatey.org) users can download and install the latest
+Terminal release by installing the `microsoft-windows-terminal` package:
 
 ```powershell
 choco install microsoft-windows-terminal
@@ -58,13 +68,18 @@ To upgrade Windows Terminal using Chocolatey, run the following:
 choco upgrade microsoft-windows-terminal
 ```
 
-If you have any issues when installing/upgrading the package please go to the [Windows Terminal package page](https://chocolatey.org/packages/microsoft-windows-terminal) and follow the [Chocolatey triage process](https://chocolatey.org/docs/package-triage-process)
+If you have any issues when installing/upgrading the package please go to the
+[Windows Terminal package
+page](https://chocolatey.org/packages/microsoft-windows-terminal) and follow the
+[Chocolatey triage process](https://chocolatey.org/docs/package-triage-process)
 
 #### Via Scoop (unofficial)
 
-[Scoop](https://scoop.sh) users can download and install the latest Terminal release by installing the `windows-terminal` package:
+[Scoop](https://scoop.sh) users can download and install the latest Terminal
+release by installing the `windows-terminal` package:
 
 ```powershell
+scoop bucket add extras
 scoop install windows-terminal
 ```
 
@@ -74,70 +89,123 @@ To update Windows Terminal using Scoop, run the following:
 scoop update windows-terminal
 ```
 
-If you have any issues when installing/updating the package, please search for or report the same on the [issues page](https://github.com/lukesampson/scoop-extras/issues) of Scoop Extras bucket repository.  
+If you have any issues when installing/updating the package, please search for
+or report the same on the [issues
+page](https://github.com/lukesampson/scoop-extras/issues) of Scoop Extras bucket
+repository.
 
 ---
 
 ## Windows Terminal 2.0 Roadmap
 
-The plan for delivering Windows Terminal 2.0 [is described here](/doc/terminal-v2-roadmap.md) and will be updated as the project proceeds.
+The plan for delivering Windows Terminal 2.0 [is described
+here](/doc/terminal-v2-roadmap.md) and will be updated as the project proceeds.
 
 ## Project Build Status
 
 Project|Build Status
 ---|---
-Terminal|[![Build Status](https://dev.azure.com/ms/Terminal/_apis/build/status/Terminal%20CI?branchName=master)](https://dev.azure.com/ms/Terminal/_build?definitionId=136)
-ColorTool|![](https://microsoft.visualstudio.com/_apis/public/build/definitions/c93e867a-8815-43c1-92c4-e7dd5404f1e1/17023/badge)
+Terminal|[![Terminal Build Status](https://dev.azure.com/ms/terminal/_apis/build/status/terminal%20CI?branchName=main)](https://dev.azure.com/ms/terminal/_build?definitionId=136)
+ColorTool|![Colortool Build Status](https://microsoft.visualstudio.com/_apis/public/build/definitions/c93e867a-8815-43c1-92c4-e7dd5404f1e1/17023/badge)
 
 ---
 
 ## Terminal & Console Overview
 
-Please take a few minutes to review the overview below before diving into the code:
+Please take a few minutes to review the overview below before diving into the
+code:
 
 ### Windows Terminal
 
-Windows Terminal is a new, modern, feature-rich, productive terminal application for command-line users. It includes many of the features most frequently requested by the Windows command-line community including support for tabs, rich text, globalization, configurability, theming & styling, and more.
+Windows Terminal is a new, modern, feature-rich, productive terminal application
+for command-line users. It includes many of the features most frequently
+requested by the Windows command-line community including support for tabs, rich
+text, globalization, configurability, theming & styling, and more.
 
-The Terminal will also need to meet our goals and measures to ensure it remains fast and efficient, and doesn't consume vast amounts of memory or power.
+The Terminal will also need to meet our goals and measures to ensure it remains
+fast and efficient, and doesn't consume vast amounts of memory or power.
 
 ### The Windows Console Host
 
-The Windows Console host, `conhost.exe`, is Windows' original command-line user experience. It also hosts Windows' command-line infrastructure and the Windows Console API server, input engine, rendering engine, user preferences, etc. The console host code in this repository is the actual source from which the `conhost.exe` in Windows itself is built.
+The Windows Console host, `conhost.exe`, is Windows' original command-line user
+experience. It also hosts Windows' command-line infrastructure and the Windows
+Console API server, input engine, rendering engine, user preferences, etc. The
+console host code in this repository is the actual source from which the
+`conhost.exe` in Windows itself is built.
 
-Since taking ownership of the Windows command-line in 2014, the team added several new features to the Console, including background transparency, line-based selection, support for [ANSI / Virtual Terminal sequences](https://en.wikipedia.org/wiki/ANSI_escape_code), [24-bit color](https://devblogs.microsoft.com/commandline/24-bit-color-in-the-windows-console/), a [Pseudoconsole ("ConPTY")](https://devblogs.microsoft.com/commandline/windows-command-line-introducing-the-windows-pseudo-console-conpty/), and more.
+Since taking ownership of the Windows command-line in 2014, the team added
+several new features to the Console, including background transparency,
+line-based selection, support for [ANSI / Virtual Terminal
+sequences](https://en.wikipedia.org/wiki/ANSI_escape_code), [24-bit
+color](https://devblogs.microsoft.com/commandline/24-bit-color-in-the-windows-console/),
+a [Pseudoconsole
+("ConPTY")](https://devblogs.microsoft.com/commandline/windows-command-line-introducing-the-windows-pseudo-console-conpty/),
+and more.
 
-However, because Windows Console's primary goal is to maintain backward compatibility, we have been unable to add many of the features the community (and the team) have been wanting for the last several years including tabs, unicode text, and emoji.
+However, because Windows Console's primary goal is to maintain backward
+compatibility, we have been unable to add many of the features the community
+(and the team) have been wanting for the last several years including tabs,
+unicode text, and emoji.
 
 These limitations led us to create the new Windows Terminal.
 
-> You can read more about the evolution of the command-line in general, and the Windows command-line specifically in [this accompanying series of blog posts](https://devblogs.microsoft.com/commandline/windows-command-line-backgrounder/) on the Command-Line team's blog.
+> You can read more about the evolution of the command-line in general, and the
+> Windows command-line specifically in [this accompanying series of blog
+> posts](https://devblogs.microsoft.com/commandline/windows-command-line-backgrounder/)
+> on the Command-Line team's blog.
 
 ### Shared Components
 
-While overhauling Windows Console, we modernized its codebase considerably, cleanly separating logical entities into modules and classes, introduced some key extensibility points, replaced several old, home-grown collections and containers with safer, more efficient [STL containers](https://docs.microsoft.com/en-us/cpp/standard-library/stl-containers?view=vs-2019), and made the code simpler and safer by using Microsoft's [Windows Implementation Libraries - WIL](https://github.com/Microsoft/wil).
+While overhauling Windows Console, we modernized its codebase considerably,
+cleanly separating logical entities into modules and classes, introduced some
+key extensibility points, replaced several old, home-grown collections and
+containers with safer, more efficient [STL
+containers](https://docs.microsoft.com/en-us/cpp/standard-library/stl-containers?view=vs-2019),
+and made the code simpler and safer by using Microsoft's [Windows Implementation
+Libraries - WIL](https://github.com/Microsoft/wil).
 
-This overhaul resulted in several of Console's key components being available for re-use in any terminal implementation on Windows. These components include a new DirectWrite-based text layout and rendering engine, a text buffer capable of storing both UTF-16 and UTF-8, a VT parser/emitter, and more.
+This overhaul resulted in several of Console's key components being available
+for re-use in any terminal implementation on Windows. These components include a
+new DirectWrite-based text layout and rendering engine, a text buffer capable of
+storing both UTF-16 and UTF-8, a VT parser/emitter, and more.
 
 ### Creating the new Windows Terminal
 
-When we started planning the new Windows Terminal application, we explored and evaluated several approaches and technology stacks. We ultimately decided that our goals would be best met by continuing our investment in our C++ codebase, which would allow us to reuse several of the aforementioned modernized components in both the existing Console and the new Terminal. Further, we realized that this would allow us to build much of the Terminal's core itself as a reusable UI control that others can incorporate into their own applications.
+When we started planning the new Windows Terminal application, we explored and
+evaluated several approaches and technology stacks. We ultimately decided that
+our goals would be best met by continuing our investment in our C++ codebase,
+which would allow us to reuse several of the aforementioned modernized
+components in both the existing Console and the new Terminal. Further, we
+realized that this would allow us to build much of the Terminal's core itself as
+a reusable UI control that others can incorporate into their own applications.
 
-The result of this work is contained within this repo and delivered as the Windows Terminal application you can download from the Microsoft Store, or [directly from this repo's releases](https://github.com/microsoft/terminal/releases).
+The result of this work is contained within this repo and delivered as the
+Windows Terminal application you can download from the Microsoft Store, or
+[directly from this repo's
+releases](https://github.com/microsoft/terminal/releases).
 
 ---
 
 ## Resources
 
-For more information about Windows Terminal, you may find some of these resources useful and interesting:
+For more information about Windows Terminal, you may find some of these
+resources useful and interesting:
 
 * [Command-Line Blog](https://devblogs.microsoft.com/commandline)
-* [Command-Line Backgrounder Blog Series](https://devblogs.microsoft.com/commandline/windows-command-line-backgrounder/)
-* Windows Terminal Launch: [Terminal "Sizzle Video"](https://www.youtube.com/watch?v=8gw0rXPMMPE&list=PLEHMQNlPj-Jzh9DkNpqipDGCZZuOwrQwR&index=2&t=0s)
-* Windows Terminal Launch: [Build 2019 Session](https://www.youtube.com/watch?v=KMudkRcwjCw)
-* Run As Radio: [Show 645 - Windows Terminal with Richard Turner](http://www.runasradio.com/Shows/Show/645)
-* Azure Devops Podcast: [Episode 54 - Kayla Cinnamon and Rich Turner on DevOps on the Windows Terminal](http://azuredevopspodcast.clear-measure.com/kayla-cinnamon-and-rich-turner-on-devops-on-the-windows-terminal-team-episode-54)
-* Microsoft Ignite 2019 Session: [The Modern Windows Command Line: Windows Terminal - BRK3321](https://myignite.techcommunity.microsoft.com/sessions/81329?source=sessions)
+* [Command-Line Backgrounder Blog
+  Series](https://devblogs.microsoft.com/commandline/windows-command-line-backgrounder/)
+* Windows Terminal Launch: [Terminal "Sizzle
+  Video"](https://www.youtube.com/watch?v=8gw0rXPMMPE&list=PLEHMQNlPj-Jzh9DkNpqipDGCZZuOwrQwR&index=2&t=0s)
+* Windows Terminal Launch: [Build 2019
+  Session](https://www.youtube.com/watch?v=KMudkRcwjCw)
+* Run As Radio: [Show 645 - Windows Terminal with Richard
+  Turner](http://www.runasradio.com/Shows/Show/645)
+* Azure Devops Podcast: [Episode 54 - Kayla Cinnamon and Rich Turner on DevOps
+  on the Windows
+  Terminal](http://azuredevopspodcast.clear-measure.com/kayla-cinnamon-and-rich-turner-on-devops-on-the-windows-terminal-team-episode-54)
+* Microsoft Ignite 2019 Session: [The Modern Windows Command Line: Windows
+  Terminal -
+  BRK3321](https://myignite.techcommunity.microsoft.com/sessions/81329?source=sessions)
 
 ---
 
@@ -147,35 +215,50 @@ For more information about Windows Terminal, you may find some of these resource
 
 Cause: You're launching the incorrect solution in Visual Studio.
 
-Solution: Make sure you're building & deploying the `CascadiaPackage` project in Visual Studio.
+Solution: Make sure you're building & deploying the `CascadiaPackage` project in
+Visual Studio.
 
-> ⚠ Note: `OpenConsole.exe` is just a locally-built `conhost.exe`, the classic Windows Console that hosts Windows' command-line infrastructure. OpenConsole is used by Windows Terminal to connect to and communicate with command-line applications (via [ConPty](https://devblogs.microsoft.com/commandline/windows-command-line-introducing-the-windows-pseudo-console-conpty/)).
+> ⚠ Note: `OpenConsole.exe` is just a locally-built `conhost.exe`, the classic
+> Windows Console that hosts Windows' command-line infrastructure. OpenConsole
+> is used by Windows Terminal to connect to and communicate with command-line
+> applications (via
+> [ConPty](https://devblogs.microsoft.com/commandline/windows-command-line-introducing-the-windows-pseudo-console-conpty/)).
 
 ---
 
 ## Documentation
 
-All project documentation is located at aka.ms/terminal-docs. If you would like to contribute to the documentation, please submit a pull request on the [Windows Terminal Documentation repo](https://github.com/MicrosoftDocs/terminal).
+All project documentation is located at aka.ms/terminal-docs. If you would like
+to contribute to the documentation, please submit a pull request on the [Windows
+Terminal Documentation repo](https://github.com/MicrosoftDocs/terminal).
 
 ---
 
 ## Contributing
 
-We are excited to work alongside you, our amazing community, to build and enhance Windows Terminal\!
+We are excited to work alongside you, our amazing community, to build and
+enhance Windows Terminal\!
 
-***BEFORE you start work on a feature/fix***, please read & follow our [Contributor's Guide](https://github.com/microsoft/terminal/blob/master/CONTRIBUTING.md) to help avoid any wasted or duplicate effort.
+***BEFORE you start work on a feature/fix***, please read & follow our
+[Contributor's
+Guide](https://github.com/microsoft/terminal/blob/main/CONTRIBUTING.md) to
+help avoid any wasted or duplicate effort.
 
 ## Communicating with the Team
 
 The easiest way to communicate with the team is via GitHub issues.
 
-Please file new issues, feature requests and suggestions, but **DO search for similar open/closed pre-existing issues before creating a new issue.**
+Please file new issues, feature requests and suggestions, but **DO search for
+similar open/closed pre-existing issues before creating a new issue.**
 
-If you would like to ask a question that you feel doesn't warrant an issue (yet), please reach out to us via Twitter:
+If you would like to ask a question that you feel doesn't warrant an issue
+(yet), please reach out to us via Twitter:
 
-* Kayla Cinnamon, Program Manager: [@cinnamon\_msft](https://twitter.com/cinnamon_msft)
+* Kayla Cinnamon, Program Manager:
+  [@cinnamon\_msft](https://twitter.com/cinnamon_msft)
 * Dustin Howett, Engineering Lead: [@dhowett](https://twitter.com/DHowett)
-* Michael Niksa, Senior Developer: [@michaelniksa](https://twitter.com/MichaelNiksa)
+* Michael Niksa, Senior Developer:
+  [@michaelniksa](https://twitter.com/MichaelNiksa)
 * Mike Griese, Developer: [@zadjii](https://twitter.com/zadjii)
 * Carlos Zamora, Developer: [@cazamor_msft](https://twitter.com/cazamor_msft)
 * Leon Liang, Developer: [@leonmsft](https://twitter.com/leonmsft)
@@ -185,11 +268,19 @@ If you would like to ask a question that you feel doesn't warrant an issue (yet)
 
 ## Prerequisites
 
-* You must be running Windows 1903 (build >= 10.0.18362.0) or later to run Windows Terminal
-* You must [enable Developer Mode in the Windows Settings app](https://docs.microsoft.com/en-us/windows/uwp/get-started/enable-your-device-for-development) to locally install and run Windows Terminal
-* You must have the [Windows 10 1903 SDK](https://developer.microsoft.com/en-us/windows/downloads/windows-10-sdk) installed
-* You must have at least [VS 2019](https://visualstudio.microsoft.com/downloads/) installed
-* You must install the following Workloads via the VS Installer. Note: Opening the solution in VS 2019 will [prompt you to install missing components automatically](https://devblogs.microsoft.com/setup/configure-visual-studio-across-your-organization-with-vsconfig/):
+* You must be running Windows 1903 (build >= 10.0.18362.0) or later to run
+  Windows Terminal
+* You must [enable Developer Mode in the Windows Settings
+  app](https://docs.microsoft.com/en-us/windows/uwp/get-started/enable-your-device-for-development)
+  to locally install and run Windows Terminal
+* You must have the [Windows 10 1903
+  SDK](https://developer.microsoft.com/en-us/windows/downloads/windows-10-sdk)
+  installed
+* You must have at least [VS
+  2019](https://visualstudio.microsoft.com/downloads/) installed
+* You must install the following Workloads via the VS Installer. Note: Opening
+  the solution in VS 2019 will [prompt you to install missing components
+  automatically](https://devblogs.microsoft.com/setup/configure-visual-studio-across-your-organization-with-vsconfig/):
   * Desktop Development with C++
   * Universal Windows Platform Development
   * **The following Individual Components**
@@ -197,13 +288,17 @@ If you would like to ask a question that you feel doesn't warrant an issue (yet)
 
 ## Building the Code
 
-This repository uses [git submodules](https://git-scm.com/book/en/v2/Git-Tools-Submodules) for some of its dependencies. To make sure submodules are restored or updated, be sure to run the following prior to building:
+This repository uses [git
+submodules](https://git-scm.com/book/en/v2/Git-Tools-Submodules) for some of its
+dependencies. To make sure submodules are restored or updated, be sure to run
+the following prior to building:
 
 ```shell
 git submodule update --init --recursive
 ```
 
-OpenConsole.sln may be built from within Visual Studio or from the command-line using a set of convenience scripts & tools in the **/tools** directory:
+OpenConsole.sln may be built from within Visual Studio or from the command-line
+using a set of convenience scripts & tools in the **/tools** directory:
 
 ### Building in PowerShell
 
@@ -222,31 +317,42 @@ bcz
 
 ## Running & Debugging
 
-To debug the Windows Terminal in VS, right click on `CascadiaPackage` (in the Solution Explorer) and go to properties. In the Debug menu, change "Application process" and "Background task process" to "Native Only".
+To debug the Windows Terminal in VS, right click on `CascadiaPackage` (in the
+Solution Explorer) and go to properties. In the Debug menu, change "Application
+process" and "Background task process" to "Native Only".
 
-You should then be able to build & debug the Terminal project by hitting <kbd>F5</kbd>.
+You should then be able to build & debug the Terminal project by hitting
+<kbd>F5</kbd>.
 
-> 👉 You will _not_ be able to launch the Terminal directly by running the WindowsTerminal.exe. For more details on why, see [#926](https://github.com/microsoft/terminal/issues/926), [#4043](https://github.com/microsoft/terminal/issues/4043)
+> 👉 You will _not_ be able to launch the Terminal directly by running the
+> WindowsTerminal.exe. For more details on why, see
+> [#926](https://github.com/microsoft/terminal/issues/926),
+> [#4043](https://github.com/microsoft/terminal/issues/4043)
 
 ### Coding Guidance
 
 Please review these brief docs below about our coding practices.
 
-> 👉 If you find something missing from these docs, feel free to contribute to any of our documentation files anywhere in the repository (or write some new ones!)
+> 👉 If you find something missing from these docs, feel free to contribute to
+> any of our documentation files anywhere in the repository (or write some new
+> ones!)
 
-This is a work in progress as we learn what we'll need to provide people in order to be effective contributors to our project.
+This is a work in progress as we learn what we'll need to provide people in
+order to be effective contributors to our project.
 
-* [Coding Style](https://github.com/Microsoft/Terminal/blob/master/doc/STYLE.md)
-* [Code Organization](https://github.com/Microsoft/Terminal/blob/master/doc/ORGANIZATION.md)
-* [Exceptions in our legacy codebase](https://github.com/Microsoft/Terminal/blob/master/doc/EXCEPTIONS.md)
-* [Helpful smart pointers and macros for interfacing with Windows in WIL](https://github.com/Microsoft/Terminal/blob/master/doc/WIL.md)
+* [Coding Style](https://github.com/microsoft/terminal/blob/main/doc/STYLE.md)
+* [Code Organization](https://github.com/microsoft/terminal/blob/main/doc/ORGANIZATION.md)
+* [Exceptions in our legacy codebase](https://github.com/microsoft/terminal/blob/main/doc/EXCEPTIONS.md)
+* [Helpful smart pointers and macros for interfacing with Windows in WIL](https://github.com/microsoft/terminal/blob/main/doc/WIL.md)
 
 ---
 
-# Code of Conduct
+## Code of Conduct
 
-This project has adopted the [Microsoft Open Source Code of Conduct][conduct-code].
-For more information see the [Code of Conduct FAQ][conduct-FAQ] or contact [opencode@microsoft.com][conduct-email] with any additional questions or comments.
+This project has adopted the [Microsoft Open Source Code of
+Conduct][conduct-code]. For more information see the [Code of Conduct
+FAQ][conduct-FAQ] or contact [opencode@microsoft.com][conduct-email] with any
+additional questions or comments.
 
 [conduct-code]: https://opensource.microsoft.com/codeofconduct/
 [conduct-FAQ]: https://opensource.microsoft.com/codeofconduct/faq/

SUPPORT.md

@@ -14,4 +14,4 @@ Support for Windows Terminal is limited to the resources listed above.
 [gh-bug]: https://github.com/microsoft/terminal/issues/new?assignees=&labels=Issue-Bug&template=bug_report.md&title=
 [gh-feature]: https://github.com/microsoft/terminal/issues/new?assignees=&labels=Issue-Feature&template=Feature_Request.md&title=
 [docs]: https://docs.microsoft.com/windows/terminal
-[contributor]: https://github.com/microsoft/terminal/blob/master/CONTRIBUTING.md
+[contributor]: https://github.com/microsoft/terminal/blob/main/CONTRIBUTING.md

build/pipelines/ci.yml

@@ -2,7 +2,7 @@ trigger:
   batch: true
   branches:
     include:
-      - master
+      - main
       - feature/*
   paths:
     exclude:
@@ -13,7 +13,7 @@ trigger:
 pr:
   branches:
     include:
-      - master
+      - main
       - feature/*
   paths:
     exclude:

build/pipelines/templates/build-console-audit-job.yml

@@ -8,7 +8,9 @@ jobs:
   variables:
     BuildConfiguration: AuditMode
     BuildPlatform: ${{ parameters.platform }}
-  pool: { vmImage: windows-2019 }
+  pool: "windevbuildagents"
+  # The public pool is also an option!
+  # pool: { vmImage: windows-2019 }
 
   steps:
   - checkout: self

build/pipelines/templates/build-console-ci.yml

@@ -11,7 +11,9 @@ jobs:
   variables:
     BuildConfiguration: ${{ parameters.configuration }}
     BuildPlatform: ${{ parameters.platform }}
-  pool: { vmImage: windows-2019 }
+  pool: "windevbuildagents"
+  # The public pool is also an option!
+  # pool: { vmImage: windows-2019 }
 
   steps:
   - template: build-console-steps.yml

build/pipelines/templates/build-console-steps.yml

@@ -41,9 +41,7 @@ steps:
     configuration: '$(BuildConfiguration)'
     msbuildArgs: "${{ parameters.additionalBuildArguments }}"
     clean: true
-    # The build agents cannot currently support parallel build due to the
-    # memory requirements of our PCH files.
-    maximumCpuCount: false
+    maximumCpuCount: true
 
 - task: PowerShell@2
   displayName: 'Check MSIX for common regressions'

build/rules/Branding.targets

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <_WTBrandingPreprocessorToken Condition="'$(WindowsTerminalBranding)'=='Preview'">WT_BRANDING_PREVIEW</_WTBrandingPreprocessorToken>
+    <_WTBrandingPreprocessorToken Condition="'$(WindowsTerminalBranding)'=='Release'">WT_BRANDING_RELEASE</_WTBrandingPreprocessorToken>
+    <_WTBrandingPreprocessorToken Condition="'$(_WTBrandingPreprocessorToken)'==''">WT_BRANDING_DEV</_WTBrandingPreprocessorToken>
+  </PropertyGroup>
+
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <PreprocessorDefinitions>$(_WTBrandingPreprocessorToken);%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+
+    <ResourceCompile>
+      <PreprocessorDefinitions>$(_WTBrandingPreprocessorToken);%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ResourceCompile>
+  </ItemDefinitionGroup>
+</Project>

build/scripts/Test-WindowsTerminalPackage.ps1

@@ -106,6 +106,10 @@ Try {
         Throw "Failed to find wt.exe/wtd.exe -- check the WAP packaging project"
     }
 
+    If ($null -eq (Get-Item "$AppxPackageRootPath\OpenConsole.exe" -EA:Ignore)) {
+        Throw "Failed to find OpenConsole.exe -- check the WAP packaging project"
+    }
+
 } Finally {
     Remove-Item -Recurse -Force $AppxPackageRootPath
 }

doc/TAEF.md

@@ -1,9 +1,30 @@
-### TAEF ###
+### TAEF Overview ###
+
 TAEF, the Test Authoring and Execution Framework, is used extensively within the Windows organization to test the operating system code in a unified manner for system, driver, and application code. As the console is a Windows OS Component, we strive to continue using the same system such that tests can be ran in a unified manner both externally to Microsoft as well as inside the official OS Build/Test system.
 
-The [official documentation](https://msdn.microsoft.com/en-us/library/windows/hardware/hh439725\(v=vs.85\).aspx) for TAEF describes the basic architecture, usage, and functionality of the test system. It is similar to Visual Studio test, but a bit more comprehensive and flexible.
+The [official documentation](https://docs.microsoft.com/en-us/windows-hardware/drivers/taef/) for TAEF describes the basic architecture, usage, and functionality of the test system. It is similar to Visual Studio test, but a bit more comprehensive and flexible.
 
-For the purposes of the console project, you can run the tests using the *TE.exe* that matches the architecture for which the test was build (x86/x64) in the pattern
+### Writing Tests
+
+You may want to read the section [Authoring Tests in C++](https://docs.microsoft.com/en-us/windows-hardware/drivers/taef/authoring-tests-in-c--) before getting your hands dirty. Note that the quoted header name in `#include "WexTestClass.h"` might be a bit confusing. You are not required to copy TAEF headers into the project folder.
+
+Use the [TAEF Verify Macros for C++](https://docs.microsoft.com/en-us/windows-hardware/drivers/taef/verify) in your test code to perform verifications.
+
+### Running Tests
+
+If you have Visual Studio and related C++ components installed, and you have successfully restored NuGets, you should have the TAEF test runner `te.exe` available locally as part of the `Taef.Redist.Wlk` package.
+
+> Note that you cannot easily run TAEF tests directly through Visual Studio. The `Taef.Redist.Wlk` NuGet package comes with an adapter that will let you browse and execute TAEF tests inside of Visual Studio, but its performance and reliability prevent us from recommending it here.
+
+In a "normal" CMD environment, `te.exe` may not be directly available. Try the following command to set up the development enviroment first:
+
+```shell
+.\tools\razzle.cmd
+```
+
+Then you should be able to use `%TAEF%` as an alias of the actual `te.exe`.
+
+For the purposes of the OpenConsole project, you can run the tests using the `te.exe` that matches the architecture for which the test was built (x86/x64):
 
 	te.exe Console.Unit.Tests.dll
 
@@ -15,6 +36,15 @@ Limiting the tests to be run is also useful with:
 
 Any pattern of class/method names can be specified after the */name:* flag with wildcard patterns.
 
-For any further details on the functionality of the TAEF test runner, *TE.exe*, please see the documentation above or run the embedded help with
+For any further details on the functionality of the TAEF test runner, please see the [Executing Tests](https://docs.microsoft.com/en-us/windows-hardware/drivers/taef/executing-tests) section in the official documentation. Or run the embedded help with
 
 	te.exe /!
+
+If you use PowerShell, try the following command:
+
+```powershell
+Import-Module .\tools\OpenConsole.psm1
+Invoke-OpenConsoleTests
+```
+
+`Invoke-OpenConsoleTests` supports a number of options, which you can enumerate by running `Invoke-OpenConsoleTests -?`.

doc/cascadia/Unittesting-CppWinRT-Xaml.md

@@ -86,7 +86,7 @@ project from our `TerminalAppLib` project:
     duplicate type definitions)-->
 
     <Reference Include="Microsoft.Terminal.Settings">
-      <HintPath>$(SolutionDir)$(Platform)\$(Configuration)\TerminalSettings\Microsoft.Terminal.Settings.winmd</HintPath>
+      <HintPath>$(OpenConsoleCommonOutDir)\TerminalSettings\Microsoft.Terminal.Settings.winmd</HintPath>
       <IsWinMDFile>true</IsWinMDFile>
       <Private>false</Private>
       <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
@@ -122,7 +122,7 @@ dir to your `AdditionalLibraryDirectories`, and adding the lib to your
   <ItemDefinitionGroup>
     <Link>
       <!-- Manually link with the TerminalAppLib.lib we've built. -->
-      <AdditionalLibraryDirectories>$(SolutionDir)\$(Platform)\$(Configuration)\TerminalAppLib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(OpenConsoleCommonOutDir)\TerminalAppLib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
 
       <AdditionalDependencies>TerminalAppLib.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
@@ -260,9 +260,9 @@ this:
         echo OutDir=$(OutDir)
         (xcopy /Y &quot;$(SolutionDir)src\cascadia\ut_app\TerminalApp.Unit.Tests.manifest&quot; &quot;$(OutDir)\TerminalApp.Unit.Tests.manifest*&quot; )
 
-        (xcopy /Y &quot;$(SolutionDir)$(Platform)\$(Configuration)\TerminalConnection\TerminalConnection.dll&quot; &quot;$(OutDir)\TerminalConnection.dll*&quot; )
-        (xcopy /Y &quot;$(SolutionDir)$(Platform)\$(Configuration)\TerminalSettings\TerminalSettings.dll&quot; &quot;$(OutDir)\TerminalSettings.dll*&quot; )
-        (xcopy /Y &quot;$(SolutionDir)$(Platform)\$(Configuration)\TerminalControl\TerminalControl.dll&quot; &quot;$(OutDir)\TerminalControl.dll*&quot; )
+        (xcopy /Y &quot;$(OpenConsoleCommonOutDir)\TerminalConnection\TerminalConnection.dll&quot; &quot;$(OutDir)\TerminalConnection.dll*&quot; )
+        (xcopy /Y &quot;$(OpenConsoleCommonOutDir)\TerminalSettings\TerminalSettings.dll&quot; &quot;$(OutDir)\TerminalSettings.dll*&quot; )
+        (xcopy /Y &quot;$(OpenConsoleCommonOutDir)\TerminalControl\TerminalControl.dll&quot; &quot;$(OutDir)\TerminalControl.dll*&quot; )
       </Command>
     </PostBuildEvent>
   </ItemDefinitionGroup>
@@ -446,9 +446,9 @@ before. The complete `PostBuildEvent` now looks like this:
 
         (xcopy /Y &quot;$(SolutionDir)src\cascadia\ut_app\TerminalApp.Unit.Tests.AppxManifest.xml&quot; &quot;$(OutDir)\TerminalApp.Unit.Tests.AppxManifest.xml*&quot; )
 
-        (xcopy /Y &quot;$(SolutionDir)$(Platform)\$(Configuration)\TerminalConnection\TerminalConnection.dll&quot; &quot;$(OutDir)\TerminalConnection.dll*&quot; )
-        (xcopy /Y &quot;$(SolutionDir)$(Platform)\$(Configuration)\TerminalSettings\TerminalSettings.dll&quot; &quot;$(OutDir)\TerminalSettings.dll*&quot; )
-        (xcopy /Y &quot;$(SolutionDir)$(Platform)\$(Configuration)\TerminalControl\TerminalControl.dll&quot; &quot;$(OutDir)\TerminalControl.dll*&quot; )
+        (xcopy /Y &quot;$(OpenConsoleCommonOutDir)\TerminalConnection\TerminalConnection.dll&quot; &quot;$(OutDir)\TerminalConnection.dll*&quot; )
+        (xcopy /Y &quot;$(OpenConsoleCommonOutDir)\TerminalSettings\TerminalSettings.dll&quot; &quot;$(OutDir)\TerminalSettings.dll*&quot; )
+        (xcopy /Y &quot;$(OpenConsoleCommonOutDir)\TerminalControl\TerminalControl.dll&quot; &quot;$(OutDir)\TerminalControl.dll*&quot; )
       </Command>
     </PostBuildEvent>
   </ItemDefinitionGroup>

doc/cascadia/profiles.schema.json

@@ -1,5 +1,5 @@
 {
-  "$id": "https://github.com/microsoft/terminal/blob/master/doc/cascadia/profiles.schema.json",
+  "$id": "https://github.com/microsoft/terminal/blob/main/doc/cascadia/profiles.schema.json",
   "$schema": "https://json-schema.org/draft/2019-09/schema#",
   "title": "Microsoft's Windows Terminal Settings Profile Schema",
   "definitions": {
@@ -26,6 +26,13 @@
       ],
       "type": "string"
     },
+    "BellStyle": {
+      "enum": [
+        "none",
+        "audible"
+      ],
+      "type": "string"
+    },
     "ProfileGuid": {
       "default": "{}",
       "pattern": "^\\{[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}\\}$",
@@ -59,6 +66,7 @@
         "paste",
         "prevTab",
         "renameTab",
+        "openTabRenamer",
         "resetFontSize",
         "resizePane",
         "scrollDown",
@@ -434,6 +442,38 @@
         }
       ]
     },
+    "ScrollUpAction": {
+      "description": "Arguments for a scrollUp action",
+      "allOf": [
+        { "$ref": "#/definitions/ShortcutAction" },
+        {
+          "properties": {
+            "action": { "type": "string", "pattern": "scrollUp" },
+            "rowsToScroll": {
+              "type": ["integer", "null"],
+              "default": null,
+              "description": "Scroll up rowsToScroll lines. If no value is provided, use the system-level defaults."
+            }
+          }
+        }
+      ]
+    },
+    "ScrollDownAction": {
+      "description": "Arguments for a scrollDown action",
+      "allOf": [
+        { "$ref": "#/definitions/ShortcutAction" },
+        {
+          "properties": {
+            "action": { "type": "string", "pattern": "scrollDown" },
+            "rowsToScroll": {
+              "type": ["integer", "null"],
+              "default": null,
+              "description": "Scroll down rowsToScroll lines. If no value is provided, use the system-level defaults."
+            }
+          }
+        }
+      ]
+    },
     "Keybinding": {
       "additionalProperties": false,
       "properties": {
@@ -455,6 +495,8 @@
               { "$ref": "#/definitions/WtAction" },
               { "$ref": "#/definitions/CloseOtherTabsAction" },
               { "$ref": "#/definitions/CloseTabsAfterAction" },
+              { "$ref": "#/definitions/ScrollUpAction" },
+              { "$ref": "#/definitions/ScrollDownAction" },
               { "type": "null" }
             ]
         },
@@ -548,18 +590,18 @@
         },
         "initialCols": {
           "default": 120,
-          "description": "The number of columns displayed in the window upon first load.",
+          "description": "The number of columns displayed in the window upon first load. If \"launchMode\" is set to \"maximized\" (or \"maximizedFocus\"), this property is ignored.",
           "maximum": 999,
           "minimum": 1,
           "type": "integer"
         },
         "initialPosition": {
           "$ref": "#/definitions/Coordinates",
-          "description": "The position of the top left corner of the window upon first load. On a system with multiple displays, these coordinates are relative to the top left of the primary display. If \"launchMode\" is set to maximized, the window will be maximized on the monitor specified by those coordinates."
+          "description": "The position of the top left corner of the window upon first load. On a system with multiple displays, these coordinates are relative to the top left of the primary display. If \"launchMode\" is set to \"maximized\" (or \"maximizedFocus\"), the window will be maximized on the monitor specified by those coordinates."
         },
         "initialRows": {
           "default": 30,
-          "description": "The number of rows displayed in the window upon first load.",
+          "description": "The number of rows displayed in the window upon first load. If \"launchMode\" is set to \"maximized\" (or \"maximizedFocus\"), this property is ignored.",
           "maximum": 999,
           "minimum": 1,
           "type": "integer"
@@ -571,11 +613,13 @@
         },
         "launchMode": {
           "default": "default",
-          "description": "Defines whether the terminal will launch as maximized, full screen, or in a window.",
+          "description": "Defines whether the terminal will launch as maximized, full screen, or in a window. Setting this to \"focus\" is equivalent to launching the terminal in the \"default\" mode, but with the focus mode enabled. Similar, setting this to \"maximizedFocus\" will result in launching the terminal in a maximized window with the focus mode enabled.",
           "enum": [
             "fullscreen",
             "maximized",
-            "default"
+            "default",
+            "focus",
+            "maximizedFocus"
           ],
           "type": "string"
         },
@@ -715,6 +759,11 @@
           ],
           "type": "string"
         },
+        "bellStyle": {
+          "default": "audible",
+          "description": "Controls what happens when the application emits a BEL character. When set to \"audible\", the Terminal will play a sound. When set to \"none\", nothing will happen.",
+          "$ref": "#/definitions/BellStyle"
+        },
         "closeOnExit": {
           "default": "graceful",
           "description": "Sets how the profile reacts to termination or failure to launch. Possible values:\n -\"graceful\" (close when exit is typed or the process exits normally)\n -\"always\" (always close)\n -\"never\" (never close).\ntrue and false are accepted as synonyms for \"graceful\" and \"never\" respectively.",

doc/creating_a_new_project.md

@@ -19,7 +19,7 @@ When creating a new DLL, it was really helpful to reference an existing DLL's `.
 - [ ] Add a `<Reference>` to `TerminalAppLib.vcxproj` similar to this:
 ```
     <Reference Include="Microsoft.Terminal.NewDLL">
-      <HintPath>$(_BinRoot)TerminalNewDLL\Microsoft.Terminal.NewDLL.winmd</HintPath>
+      <HintPath>$(OpenConsoleCommonOutDir)\TerminalNewDLL\Microsoft.Terminal.NewDLL.winmd</HintPath>
       <IsWinMDFile>true</IsWinMDFile>
       <Private>false</Private>
       <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>

doc/specs/#1571 - New Tab Menu Customization/#1571 - New Tab Menu Customization.md

@@ -293,7 +293,7 @@ And assuming the user has bound:
 
 <!-- Footnotes -->
 [#2046]: https://github.com/microsoft/terminal/issues/2046
-[Command Palette, Addendum 1]: https://github.com/microsoft/terminal/blob/master/doc/specs/%232046%20-%20Unified%20keybindings%20and%20commands%2C%20and%20synthesized%20action%20names.md
+[Command Palette, Addendum 1]: https://github.com/microsoft/terminal/blob/main/doc/specs/%232046%20-%20Unified%20keybindings%20and%20commands%2C%20and%20synthesized%20action%20names.md
 
 [#3337]: https://github.com/microsoft/terminal/issues/3337
 [#6899]: https://github.com/microsoft/terminal/issues/6899

doc/specs/#2046 - Unified keybindings and commands, and synthesized action names.md

@@ -605,4 +605,4 @@ as well as 3 schemes: "Scheme 1", "Scheme 2", and "Scheme 3".
 
 
 <!-- Footnotes -->
-[Command Palette Spec]: https://github.com/microsoft/terminal/blob/master/doc/specs/%232046%20-%20Command%20Palette.md
+[Command Palette Spec]: https://github.com/microsoft/terminal/blob/main/doc/specs/%232046%20-%20Command%20Palette.md

doc/specs/#6899 - Action IDs/#6899 - Action IDs.md

@@ -215,8 +215,8 @@ actions manually.
       the tab context menu or the control context menu.
 
 <!-- Footnotes -->
-[Command Palette Spec]: https://github.com/microsoft/terminal/blob/master/doc/specs/%232046%20-%20Command%20Palette.md
-[New Tab Menu Customization Spec]: https://github.com/microsoft/terminal/blob/master/doc/specs/%231571%20-%20New%20Tab%20Menu%20Customization.md
+[Command Palette Spec]: https://github.com/microsoft/terminal/blob/main/doc/specs/%232046%20-%20Command%20Palette.md
+[New Tab Menu Customization Spec]: https://github.com/microsoft/terminal/blob/main/doc/specs/%231571%20-%20New%20Tab%20Menu%20Customization.md
 
 [#1571]: https://github.com/microsoft/terminal/issues/1571
 [#1912]: https://github.com/microsoft/terminal/issues/1912

doc/specs/#885 - Terminal Settings Model/#885 - Terminal Settings Model.md

@@ -78,13 +78,185 @@ This separation leaves `AppKeyBindings` with the responsibility of detecting and
  `KeyMapping` handles the (de)serialization and navigation of the key bindings.
 
 
+### Fallback Value
+
+Cascading settings allows our settings model to be constructed in layers (i.e. settings.json values override defaults.json values). With the upcoming introduction of the Settings UI and serialization, it is important to know where a setting value comes from. Consider a Settings UI displaying the following information:
+```json
+    // <profile>: <color scheme value>
+    "defaults": "Solarized", // profiles.defaults
+    "A": "Raspberry", // profile A
+    "B": "Tango", // profile B
+    "C": "Solarized" // profile C
+```
+If `profiles.defaults` gets changed to `"Tango"` via the Settings UI, it is unclear if profile C's value should be updated as well. We need profile C to record if it's value is inherited from profile.defaults or explicitly set by the user.
+
+#### Object Model Inheritance
+
+To start, each settings object will now have a `CreateChild()` function. For `GlobalAppSettings`, it will look something like this:
+```c++
+GlobalAppSettings GlobalAppSettings::CreateChild() const
+{
+    GlobalAppSettings child {};
+    child._parents.append(this);
+    return child;
+}
+```
+`std::vector<T> _parents` serves as a reference for who to ask if a settings value was not provided by the user. `LaunchMode`, for example, will now have a getter/setter that looks similar to this:
+```c++
+// _LaunchMode will now be a std::optional<LaunchMode> instead of a LaunchMode
+// - std::nullopt will mean that there is no user-set value
+// - otherwise, the value was explicitly set by the user
+
+// returns the resolved value for this setting
+LaunchMode GlobalAppSettings::LaunchMode()
+{
+    // fallback tree:
+    //  - user set value
+    //  - inherited value
+    //  - system set value
+    return til::coalesce_value(_LaunchMode, _parents[0].LaunchMode(), _parents[1].LaunchMode(), ..., LaunchMode::DefaultMode);
+}
+
+// explicitly set the user-set value
+void GlobalAppSettings::LaunchMode(LaunchMode val)
+{
+    _LaunchMode = val;
+}
+
+// check if there is a user-set value
+// NOTE: This is important for the Settings UI to identify whether the user explicitly or implicitly set the presented value
+bool GlobalAppSettings::HasLaunchMode()
+{
+    return _LaunchMode.has_value();
+}
+
+// explicitly unset the user-set value (we want the inherited value)
+void GlobalAppSettings::ClearLaunchMode()
+{
+    return _LaunchMode = std::nullopt;
+}
+```
+
+As a result, the tracking and functionality of cascading settings is moved into the object model instead of keeping it as a json-only concept.
+
+#### Updates to CascadiaSettings
+
+As `CascadiaSettings` loads the settings model, it will create children for each component of the settings model and layer the new values on top of it. Thus, `LayerJson` will look something like this:
+```c++
+void CascadiaSettings::LayerJson(const Json::Value& json)
+{
+    _globals = _globals.CreateChild();
+    _globals->LayerJson(json);
+
+    // repeat the same for Profiles...
+}
+```
+For `defaults.json`, `_globals` will now hold all of the values set in `defaults.json`. If any settings were omitted from the `defaults.json`, `_globals` will fallback to its parent (a `GlobalAppSettings` consisting purely of system-defined values).
+
+For `settings.json`, `_globals` will only hold the values set in `settings.json`. If any settings were omitted from `settings.json`, `_globals` will fallback to its parent (the `GlobalAppSettings` built from `defaults.json`).
+
+This process becomes a bit more complex for `Profile` because it can fallback in the following order:
+1. `settings.json` profile
+2. `settings.json` `profiles.defaults`
+3. (if a dynamic profile) the hardcoded value in the dynamic profile generator
+4. `defaults.json` profile
+
+`CascadiaSettings` must do the following...
+1. load `defaults.json`
+   - append newly created profiles to `_profiles` (unchanged)
+2. load dynamic profiles
+   - append newly created profiles to `_profiles` (unchanged)
+3. load `settings.json` `profiles.defaults`
+   - construct a `Profile` from `profiles.defaults`. Save as `Profile _profileDefaults`.
+   - `CreateChild()` for each existing profile
+   - add `_profileDefaults` as the first parent to each child (`_parents=[_profileDefaults, <value from generator/defaults.json> ]`)
+   - replace each `Profile` in `_profiles` with the child
+4. load `settings.json` `profiles.list`
+   - if a matching profile exists, `CreateChild` from the matching profile, and layer the json onto the child.
+      - NOTE: we do _not_ include `_profileDefaults` as a parent here, because it is already an ancestor
+   - otherwise, `CreateChild()` from `_profileDefaults`, and layer the json onto the child.
+   - As before, `_profiles` must be updated such that the parent is removed
+
+Additionally, `_profileDefaults` will be exposed by `Profile CascadiaSettings::ProfileDefaults()`. This will enable [#7414](https://github.com/microsoft/terminal/pull/7414)'s implementation to spawn incoming commandline app tabs with the "Default" profile (as opposed to the "default profile").
+
+
+#### Nullable Settings
+Some settings are explicitly allowed to be nullable (i.e. `Profile` `Foreground`). These settings will be stored as the following struct instead of a `std::optional<T>`:
+```c++
+template<typename T>
+struct NullableSetting
+{
+    IReference<T> setting{ nullptr };
+    bool set{ false };
+};
+```
+where...
+- `set` determines if the value was explicitly set by the user (if false, we should fall back)
+- `setting` records the actual user-set value (`nullptr` represents an explicit set to null)
+
+The API surface will experience the following small changes:
+- the getter/setter will output/input an `IReference<T>` instead of `T`
+- `Has...()` and `Clear...()` will reference/modify `set`
+
+
+### CreateChild() vs Copy()
+
+Settings objects will have `CreateChild()` and `Copy()`. `CreateChild()` is responsible for creating a new settings object that inherits undefined values from its parent. `Copy()` is responsible for recreating the contents of the settings object, including a reference to a copied parent (not the original parent).
+
+`CreateChild()` will only be used during (de)serialization to adequately interpret and update the JSON. `CreateChild()` enables, but is not explicitly used, for retrieving a value from a settings object. It can also be used to enable larger hierarchies for inheritance within the settings model.
+
+The Settings UI will use `Copy()` to get a deep copy of `CascadiaSettings` and data bind the UI to that copy. Thus, `Copy()` needs to be exposed in the IDL.
+
+#### Copying _parents
+It is important that `_parents` is handled properly when performing a deep copy. We need to be aware of the following errors:
+- referencing `_parents` will result in inheriting from an obsolete object tree
+- referencing a copy of `_parents` can result in losing the meaning of a reference
+  - For example, `profile.defaults` is a parent to each presented profile. When a change occurs to `profile.defaults`, that change should impact all profiles. An improper copy may only apply the change to one of the presented profiles
+
+The hierarchy we have created has evolved into a directed acyclic graph (DAG). For example, the hierarchy for profiles will appear similar to the following:
+
+![Profile Inheritance DAG Example](Inheritance-DAG.png)
+
+In order to preserve `profile.defaults` as a referenced parent to each profile, a copy of the DAG can be performed using the following algorithm:
+```python
+# Function to clone a graph. To do this, we start
+# reading the original graph depth-wise, recursively
+# If we encounter an unvisited node in original graph,
+# we initialize a new instance of Node for
+# cloned graph with key of original node
+def cloneGraph(oldSource, newSource, visited):
+    clone = None
+    if visited[oldSource.key] is False and oldSource.adj is not None:
+        for old in oldSource.adj:
+
+            # Below check is for backtracking, so new
+            # nodes don't get initialized everytime
+            if clone is None or(clone is not None and clone.key != old.key):
+                clone = Node(old.key, [])
+            newSource.adj.append(clone)
+            cloneGraph(old, clone, visited)
+
+            # Once, all neighbors for that particular node
+            # are created in cloned graph, code backtracks
+            # and exits from that node, mark the node as
+            # visited in original graph, and traverse the
+            # next unvisited
+            visited[old.key] = True
+    return newSource
+```
+Source: https://www.geeksforgeeks.org/clone-directed-acyclic-graph/
+
+This algorithm operates in O(n) time and space where `n` is the number of profiles presented. The above algorithm will be slightly modified to...
+- hold a separate reference to profile.defaults `Profile` in the `CascadiaSettings` clone
+- visited will be a map of pointers to the cloned `Profile`. This ensures that profiles reference the same `Profile`, over creating a new copy
+
 ### Terminal Settings Model: Serialization and Deserialization
 
 Introducing these `Microsoft.Terminal.Settings.Model` WinRT objects also allow the serialization and deserialization
  logic from TerminalApp to be moved to TerminalSettings. `JsonUtils` introduces several quick and easy methods
- for setting serialization. This will be moved into the `Microsoft.Terminal.Settings.Model` namespace too.
+ for setting deserialization. This will be moved into the `Microsoft.Terminal.Settings.Model` namespace too.
 
-Deserialization will be an extension of the existing `JsonUtils` `ConversionTrait` struct template. `ConversionTrait`
+Serialization will be an extension of the existing `JsonUtils` `ConversionTrait` struct template. `ConversionTrait`
  already includes `FromJson` and `CanConvert`. Serialization would be handled by a `ToJson` function.
 
 

doc/submitting_code.md

@@ -1,11 +1,11 @@
 
 # Branches in Openconsole
 
-In Openconsole, `dev/main` is the master branch for the repo.
+In OpenConsole, `dev/main` is the primary branch for the repo.
 
 Any branch that begins with `dev/` is recognized by our CI system and will automatically run x86 and amd64 builds and run our unit and feature tests. For feature branches the pattern we use is `dev/<alias>/<whatever you want here>`. ex. `dev/austdi/SomeCoolUnicodeFeature`. The important parts are the dev prefix and your alias.
 
-`inbox` is a special branch that coordinates Openconsole code to the main OS repo.
+`inbox` is a special branch that coordinates OpenConsole code to the main OS repo.
 
 The code will be checked into the OS repo at `/onecore/windows/core/console/open`. It would be prudent to make sure that directory builds in razzle with your submitted changes.
 

doc/user-docs/ThirdPartyToolProfiles.md

@@ -96,7 +96,9 @@ Assuming that you've installed MSYS2 into `C:\\msys64`:
     "icon": "C:\\msys64\\msys2.ico",
     "startingDirectory": "C:\\msys64\\home\\user"
 }
-````
+```
+
+For more details, see [this page](https://www.msys2.org/docs/terminals/#windows-terminal) on the MSYS2 documentation.
 
 ## Developer Command Prompt for Visual Studio
 

oss/interval_tree/IntervalTree.h

@@ -0,0 +1,434 @@
+#ifndef __INTERVAL_TREE_H
+#define __INTERVAL_TREE_H
+
+#include <vector>
+#include <algorithm>
+#include <iostream>
+#include <memory>
+#include <cassert>
+
+#ifdef USE_INTERVAL_TREE_NAMESPACE
+namespace interval_tree
+{
+#endif
+    template<class Scalar, typename Value>
+    class Interval
+    {
+    public:
+        Scalar start;
+        Scalar stop;
+        Value value;
+        Interval(const Scalar& s, const Scalar& e, const Value& v) :
+            start(std::min(s, e)), stop(std::max(s, e)), value(v)
+        {
+        }
+
+        Interval()
+        {
+        }
+
+        constexpr bool operator==(const Interval& other) const noexcept
+        {
+            return start == other.start &&
+                   stop == other.stop &&
+                   value == other.value;
+        }
+
+        constexpr bool operator!=(const Interval& other) const noexcept
+        {
+            return !(*this == other);
+        }
+    };
+
+    template<class Scalar, typename Value>
+    Value intervalStart(const Interval<Scalar, Value>& i)
+    {
+        return i.start;
+    }
+
+    template<class Scalar, typename Value>
+    Value intervalStop(const Interval<Scalar, Value>& i)
+    {
+        return i.stop;
+    }
+
+    template<class Scalar, typename Value>
+    std::ostream& operator<<(std::ostream& out, const Interval<Scalar, Value>& i)
+    {
+        out << "Interval(" << i.start << ", " << i.stop << "): " << i.value;
+        return out;
+    }
+
+    template<class Scalar, class Value>
+    class IntervalTree
+    {
+    public:
+        typedef Interval<Scalar, Value> interval;
+        typedef std::vector<interval> interval_vector;
+
+        struct IntervalStartCmp
+        {
+            bool operator()(const interval& a, const interval& b)
+            {
+                return a.start < b.start;
+            }
+        };
+
+        struct IntervalStopCmp
+        {
+            bool operator()(const interval& a, const interval& b)
+            {
+                return a.stop < b.stop;
+            }
+        };
+
+        IntervalTree() :
+            left(nullptr), right(nullptr), center()
+        {
+        }
+
+        ~IntervalTree() = default;
+
+        std::unique_ptr<IntervalTree> clone() const
+        {
+            return std::unique_ptr<IntervalTree>(new IntervalTree(*this));
+        }
+
+        IntervalTree(const IntervalTree& other) :
+            intervals(other.intervals),
+            left(other.left ? other.left->clone() : nullptr),
+            right(other.right ? other.right->clone() : nullptr),
+            center(other.center)
+        {
+        }
+
+        IntervalTree& operator=(IntervalTree&&) = default;
+        IntervalTree(IntervalTree&&) = default;
+
+        IntervalTree& operator=(const IntervalTree& other)
+        {
+            center = other.center;
+            intervals = other.intervals;
+            left = other.left ? other.left->clone() : nullptr;
+            right = other.right ? other.right->clone() : nullptr;
+            return *this;
+        }
+
+        IntervalTree(
+            interval_vector&& ivals,
+            std::size_t depth = 16,
+            std::size_t minbucket = 64,
+            std::size_t maxbucket = 512,
+            Scalar leftextent = {},
+            Scalar rightextent = {}) :
+            left(nullptr), right(nullptr)
+        {
+            --depth;
+            const auto minmaxStop = std::minmax_element(ivals.begin(), ivals.end(), IntervalStopCmp());
+            const auto minmaxStart = std::minmax_element(ivals.begin(), ivals.end(), IntervalStartCmp());
+            if (!ivals.empty())
+            {
+                center = (minmaxStart.first->start + minmaxStop.second->stop) / 2;
+            }
+            if (leftextent == Scalar{} && rightextent == Scalar{})
+            {
+                // sort intervals by start
+                std::sort(ivals.begin(), ivals.end(), IntervalStartCmp());
+            }
+            else
+            {
+                assert(std::is_sorted(ivals.begin(), ivals.end(), IntervalStartCmp()));
+            }
+            if (depth == 0 || (ivals.size() < minbucket && ivals.size() < maxbucket))
+            {
+                std::sort(ivals.begin(), ivals.end(), IntervalStartCmp());
+                intervals = std::move(ivals);
+                assert(is_valid().first);
+                return;
+            }
+            else
+            {
+                Scalar leftp = Scalar{};
+                Scalar rightp = Scalar{};
+
+                if (leftextent != Scalar{} || rightextent != Scalar{})
+                {
+                    leftp = leftextent;
+                    rightp = rightextent;
+                }
+                else
+                {
+                    leftp = ivals.front().start;
+                    rightp = std::max_element(ivals.begin(), ivals.end(), IntervalStopCmp())->stop;
+                }
+
+                interval_vector lefts;
+                interval_vector rights;
+
+                for (typename interval_vector::const_iterator i = ivals.begin();
+                     i != ivals.end();
+                     ++i)
+                {
+                    const interval& interval = *i;
+                    if (interval.stop < center)
+                    {
+                        lefts.push_back(interval);
+                    }
+                    else if (interval.start > center)
+                    {
+                        rights.push_back(interval);
+                    }
+                    else
+                    {
+                        assert(interval.start <= center);
+                        assert(center <= interval.stop);
+                        intervals.push_back(interval);
+                    }
+                }
+
+                if (!lefts.empty())
+                {
+                    left.reset(new IntervalTree(std::move(lefts),
+                                                depth,
+                                                minbucket,
+                                                maxbucket,
+                                                leftp,
+                                                center));
+                }
+                if (!rights.empty())
+                {
+                    right.reset(new IntervalTree(std::move(rights),
+                                                 depth,
+                                                 minbucket,
+                                                 maxbucket,
+                                                 center,
+                                                 rightp));
+                }
+            }
+            assert(is_valid().first);
+        }
+
+        // Call f on all intervals near the range [start, stop]:
+        template<class UnaryFunction>
+        void visit_near(const Scalar& start, const Scalar& stop, UnaryFunction f) const
+        {
+            if (!intervals.empty() && !(stop < intervals.front().start))
+            {
+                for (auto& i : intervals)
+                {
+                    f(i);
+                }
+            }
+            if (left && start <= center)
+            {
+                left->visit_near(start, stop, f);
+            }
+            if (right && stop >= center)
+            {
+                right->visit_near(start, stop, f);
+            }
+        }
+
+        // Call f on all intervals crossing pos
+        template<class UnaryFunction>
+        void visit_overlapping(const Scalar& pos, UnaryFunction f) const
+        {
+            visit_overlapping(pos, pos, f);
+        }
+
+        // Call f on all intervals overlapping [start, stop]
+        template<class UnaryFunction>
+        void visit_overlapping(const Scalar& start, const Scalar& stop, UnaryFunction f) const
+        {
+            auto filterF = [&](const interval& interval) {
+                if (interval.stop >= start && interval.start <= stop)
+                {
+                    // Only apply f if overlapping
+                    f(interval);
+                }
+            };
+            visit_near(start, stop, filterF);
+        }
+
+        // Call f on all intervals contained within [start, stop]
+        template<class UnaryFunction>
+        void visit_contained(const Scalar& start, const Scalar& stop, UnaryFunction f) const
+        {
+            auto filterF = [&](const interval& interval) {
+                if (start <= interval.start && interval.stop <= stop)
+                {
+                    f(interval);
+                }
+            };
+            visit_near(start, stop, filterF);
+        }
+
+        interval_vector findOverlapping(const Scalar& start, const Scalar& stop) const
+        {
+            interval_vector result;
+            visit_overlapping(start, stop, [&](const interval& interval) {
+                result.emplace_back(interval);
+            });
+            return result;
+        }
+
+        interval_vector findContained(const Scalar& start, const Scalar& stop) const
+        {
+            interval_vector result;
+            visit_contained(start, stop, [&](const interval& interval) {
+                result.push_back(interval);
+            });
+            return result;
+        }
+        bool empty() const
+        {
+            if (left && !left->empty())
+            {
+                return false;
+            }
+            if (!intervals.empty())
+            {
+                return false;
+            }
+            if (right && !right->empty())
+            {
+                return false;
+            }
+            return true;
+        }
+
+        template<class UnaryFunction>
+        void visit_all(UnaryFunction f) const
+        {
+            if (left)
+            {
+                left->visit_all(f);
+            }
+            std::for_each(intervals.begin(), intervals.end(), f);
+            if (right)
+            {
+                right->visit_all(f);
+            }
+        }
+
+        std::pair<Scalar, Scalar> extentBruitForce() const
+        {
+            struct Extent
+            {
+                std::pair<Scalar, Scalar> x = { std::numeric_limits<Scalar>::max(),
+                                                std::numeric_limits<Scalar>::min() };
+                void operator()(const interval& interval)
+                {
+                    x.first = std::min(x.first, interval.start);
+                    x.second = std::max(x.second, interval.stop);
+                }
+            };
+            Extent extent;
+
+            visit_all([&](const interval& interval) { extent(interval); });
+            return extent.x;
+        }
+
+        // Check all constraints.
+        // If first is false, second is invalid.
+        std::pair<bool, std::pair<Scalar, Scalar>> is_valid() const
+        {
+            const auto minmaxStop = std::minmax_element(intervals.begin(), intervals.end(), IntervalStopCmp());
+            const auto minmaxStart = std::minmax_element(intervals.begin(), intervals.end(), IntervalStartCmp());
+
+            std::pair<bool, std::pair<Scalar, Scalar>> result = { true, { std::numeric_limits<Scalar>::max(), std::numeric_limits<Scalar>::min() } };
+            if (!intervals.empty())
+            {
+                result.second.first = std::min(result.second.first, minmaxStart.first->start);
+                result.second.second = std::min(result.second.second, minmaxStop.second->stop);
+            }
+            if (left)
+            {
+                auto valid = left->is_valid();
+                result.first &= valid.first;
+                result.second.first = std::min(result.second.first, valid.second.first);
+                result.second.second = std::min(result.second.second, valid.second.second);
+                if (!result.first)
+                {
+                    return result;
+                }
+                if (valid.second.second >= center)
+                {
+                    result.first = false;
+                    return result;
+                }
+            }
+            if (right)
+            {
+                auto valid = right->is_valid();
+                result.first &= valid.first;
+                result.second.first = std::min(result.second.first, valid.second.first);
+                result.second.second = std::min(result.second.second, valid.second.second);
+                if (!result.first)
+                {
+                    return result;
+                }
+                if (valid.second.first <= center)
+                {
+                    result.first = false;
+                    return result;
+                }
+            }
+            if (!std::is_sorted(intervals.begin(), intervals.end(), IntervalStartCmp()))
+            {
+                result.first = false;
+            }
+            return result;
+        }
+
+        friend std::ostream& operator<<(std::ostream& os, const IntervalTree& itree)
+        {
+            return writeOut(os, itree);
+        }
+
+        friend std::ostream& writeOut(std::ostream& os, const IntervalTree& itree, std::size_t depth = 0)
+        {
+            auto pad = [&]() { for (std::size_t i = 0; i != depth; ++i) { os << ' '; } };
+            pad();
+            os << "center: " << itree.center << '\n';
+            for (const interval& inter : itree.intervals)
+            {
+                pad();
+                os << inter << '\n';
+            }
+            if (itree.left)
+            {
+                pad();
+                os << "left:\n";
+                writeOut(os, *itree.left, depth + 1);
+            }
+            else
+            {
+                pad();
+                os << "left: nullptr\n";
+            }
+            if (itree.right)
+            {
+                pad();
+                os << "right:\n";
+                writeOut(os, *itree.right, depth + 1);
+            }
+            else
+            {
+                pad();
+                os << "right: nullptr\n";
+            }
+            return os;
+        }
+
+    private:
+        interval_vector intervals;
+        std::unique_ptr<IntervalTree> left;
+        std::unique_ptr<IntervalTree> right;
+        Scalar center;
+    };
+#ifdef USE_INTERVAL_TREE_NAMESPACE
+}
+#endif
+
+#endif

oss/interval_tree/MAINTAINER_README.md

@@ -0,0 +1,17 @@
+# Notes for Future Maintainers
+
+This was originally imported by @PankajBhojwani in September 2020.
+
+The provenance information (where it came from and which commit) is stored in the file `cgmanifest.json` in the same directory as this readme.
+Please update the provenance information in that file when ingesting an updated version of the dependent library.
+That provenance file is automatically read and inventoried by Microsoft systems to ensure compliance with appropiate governance standards.
+
+## What should be done to update this in the future?
+
+1. Go to ekg/intervaltreerepository on GitHub.
+2. Take the file IntervalTree.h wholesale and drop it into the directory here.
+3. Don't change anything about it.
+4. Validate that the license in the root of the repository didn't change and update it if so. It is sitting in the same directory as this readme.
+   If it changed dramatically, ensure that it is still compatible with our license scheme. Also update the NOTICE file in the root of our repository to declare the third-party usage.
+5. Submit the pull.
+

oss/interval_tree/cgmanifest.json

@@ -0,0 +1,13 @@
+{"Registrations":[ 
+    {
+      "component": { 
+       "type": "git",
+        "git": {
+          "repositoryUrl": "https://github.com/ekg/intervaltree",
+          "commitHash": "b90527f9e6d51cd36ecbb50429e4524d3a418ea5"
+        }
+       }
+    }
+ ],
+ "Version": 1
+}

res/README.md

@@ -2,17 +2,17 @@
 
 ## Images
 
-The images in this directory do not fall under the same [license](https://raw.githubusercontent.com/microsoft/terminal/master/LICENSE) as the rest
+The images in this directory do not fall under the same [license](https://raw.githubusercontent.com/microsoft/terminal/main/LICENSE) as the rest
 of the Windows Terminal code.
 
 Please consult the [license](./LICENSE) in this directory for terms applicable to the image assets in this directory.
 
 ## Fonts
 
-The fonts in this directory do not fall under the same [license](https://raw.githubusercontent.com/microsoft/terminal/master/LICENSE) as the rest
+The fonts in this directory do not fall under the same [license](https://raw.githubusercontent.com/microsoft/terminal/main/LICENSE) as the rest
 of the Windows Terminal code.
 
-Please consult the [license](https://raw.githubusercontent.com/microsoft/cascadia-code/master/LICENSE) in the
+Please consult the [license](https://raw.githubusercontent.com/microsoft/cascadia-code/main/LICENSE) in the
 [microsoft/cascadia-code](https://github.com/microsoft/cascadia-code) repository for terms applicable to the fonts in this directory.
 
 ### Fonts Included

res/terminal/Generate-TerminalAssets.ps1

@@ -24,6 +24,7 @@ Param(
   [string]$Path,
   [string]$Destination,
   [int[]]$Altforms = (16, 20, 24, 30, 32, 36, 40, 48, 60, 64, 72, 80, 96, 256),
+  [int[]]$Win32IconSizes = (16, 20, 24, 32, 48, 64, 256),
   [switch]$Unplated = $true,
   [float[]]$Scales = (1.0, 1.25, 1.5, 2.0, 4.0),
   [string]$HighContrastPath = "",
@@ -115,6 +116,7 @@ If (-Not [string]::IsNullOrEmpty($Destination)) {
   $TranslatedOutDir = "."
 }
 
+$intermediates = [System.Collections.Concurrent.ConcurrentBag[PSCustomObject]]::new()
 $intermediateFiles = [System.Collections.Concurrent.ConcurrentBag[string]]::new()
 
 # Generate the base icons
@@ -136,6 +138,11 @@ $allSizes | ForEach-Object -Parallel {
   }
 
   ($using:intermediateFiles).Add($intermediateStandardNt)
+  ($using:intermediates).Add([PSCustomObject]@{
+      Contrast = "standard"
+      Size = $sz
+      PathWSL = $intermediateStandardWsl
+  })
 
   If ($svgContrastWsl -Ne $null) {
     $intermediateBlackNt = "$destinationNt\_intermediate.black.$($sz).png"
@@ -158,9 +165,28 @@ $allSizes | ForEach-Object -Parallel {
 
     ($using:intermediateFiles).Add($intermediateBlackNt)
     ($using:intermediateFiles).Add($intermediateWhiteNt)
+    ($using:intermediates).Add([PSCustomObject]@{
+        Contrast = "black"
+        Size = $sz
+        PathWSL = $intermediateBlackWsl
+    })
+    ($using:intermediates).Add([PSCustomObject]@{
+        Contrast = "white"
+        Size = $sz
+        PathWSL = $intermediateWhiteWsl
+    })
   }
 }
 
+$intermediates | ? { $_.Size -In $Win32IconSizes } | Group-Object Contrast | ForEach-Object -Parallel {
+  $assetName = "terminal.ico"
+  If ($_.Name -Ne "standard") {
+    $assetName = "terminal_contrast-$($_.Name).ico"
+  }
+  Write-Host "Producing win32 .ico for contrast=$($_.Name) as $assetName"
+  wsl convert $_.Group.PathWSL "$($using:TranslatedOutDir)/$assetName"
+}
+
 # Once the base icons are done, splat them into the middles of larger canvases.
 $allAssetSizes | ForEach-Object -Parallel {
   $asset = $_