starred/terminal
1
0
Fork 0
mirror of https://github.com/microsoft/terminal.git synced 2026-02-03 21:25:34 +00:00
Code Issues 19.0k Packages Projects Releases 20 Wiki Activity

Does not print Unicode "Left Half Block" correctly #10124

New Issue
Closed
opened 2026-01-31 02:13:06 +00:00 by claunia · 11 comments
claunia commented 2026-01-31 02:13:06 +00:00
Owner
Copy Link

Originally created by @mangelozzi on GitHub (Aug 12, 2020).

Environment

Windows build number: Microsoft Windows [Version 10.0.19041.388]
Windows Terminal version (if applicable): Version: 1.1.2021.0

Intro

In Unicode there are two symbols often used for drawings boxes:
Left Half Block: https://www.compart.com/en/unicode/U+258C
Right Half Block: https://www.compart.com/en/unicode/U+2590

Steps to reproduce

Right half block is printed correctly.
Left half block is not printed correctly.

  1. Open windows terminal, and paste in echo Left Half: ▌▌▌
  2. Open windows terminal, and paste in echo Right Half: ▐▐▐

Actual behavior

Half block is printed as almost a full block. I have tried various fonts, and shells. The common factor is windows terminal.
This is how it looks:
image

Expected behavior

Print the characters as they should be.

notepad.exe:
image

cmd.exe:
image

Originally created by @mangelozzi on GitHub (Aug 12, 2020). # Environment ```none Windows build number: Microsoft Windows [Version 10.0.19041.388] Windows Terminal version (if applicable): Version: 1.1.2021.0 ``` # Intro In Unicode there are two symbols often used for drawings boxes: Left Half Block: <https://www.compart.com/en/unicode/U+258C> Right Half Block: <https://www.compart.com/en/unicode/U+2590> # Steps to reproduce Right half block is printed correctly. Left half block is not printed correctly. 1. Open windows terminal, and paste in `echo Left Half: ▌▌▌` 2. Open windows terminal, and paste in `echo Right Half: ▐▐▐` # Actual behavior Half block is printed as almost a full block. I have tried various fonts, and shells. The common factor is windows terminal. This is how it looks: ![image](https://user-images.githubusercontent.com/19764314/90052041-df8fa080-dcd8-11ea-94e8-5a79837739bf.png) # Expected behavior Print the characters as they should be. notepad.exe: ![image](https://user-images.githubusercontent.com/19764314/90052442-6f354f00-dcd9-11ea-9e9c-d8494f3c9aa5.png) cmd.exe: ![image](https://user-images.githubusercontent.com/19764314/90052587-a441a180-dcd9-11ea-9d42-72f7603c302c.png)
claunia added the Resolution-Duplicate label 2026-01-31 02:13:06 +00:00
claunia commented 2026-01-31 02:13:07 +00:00
Author
Owner
Copy Link

@DHowett commented on GitHub (Aug 12, 2020):

So, I can't reproduce this with any particular font on that version. I've even tried disabling antialiasing.

Cascadia Code

image

image

Consolas
image

image

Mind sharing your settings.json?

@DHowett commented on GitHub (Aug 12, 2020): So, I can't reproduce this with any particular font on that version. I've even tried disabling antialiasing. Cascadia Code ![image](https://user-images.githubusercontent.com/189190/90057907-e5b05d80-dc95-11ea-9f3a-0d7ddf7c5e73.png) ![image](https://user-images.githubusercontent.com/189190/90057901-e2b56d00-dc95-11ea-9495-8e38db4fe5d8.png) Consolas ![image](https://user-images.githubusercontent.com/189190/90057866-d6311480-dc95-11ea-931d-3fdeb32746db.png) ![image](https://user-images.githubusercontent.com/189190/90057877-d9c49b80-dc95-11ea-8129-db25bac0a408.png) Mind sharing your `settings.json`?
claunia commented 2026-01-31 02:13:07 +00:00
Author
Owner
Copy Link

@mangelozzi commented on GitHub (Aug 12, 2020):

I disabled the settings one at a time until I got the same result as you. It is a font thing, But not on consolas and cascadia code.

Currently I have the following two fonts:

           //"fontFace": "Roboto Mono",
            //"fontFace": "Inconsolatago NF",

Looking at your screen shots, one can see the Left block is not the same width as the right block. In the aliased ones we can put it down to pixelisation. But on the anti-aliased ones, one can see a bias between the two sides:
image

Its strange that these fonts render okay on other apps but not windows terminal, I suspect there is something not quite right at play here. Maybe you could try these fonts and see whats happening with the rendering?:

PS these are my font settings:

            "fontSize": 13,
            "antialiasingMode": "aliased",
            "fontWeight" : "bold",
            "fontFace": "Roboto Mono",
            "cursorShape" : "filledBox",

Miscrosoft word:

image

Windows Terminal:

Roboto Mono:
image

Inconsolata Go Nerd font:
image

Cmder

Inconsolata Go Nerd font:
image

Roboto Mono:
image

What I have seen is that notepad.exe and windows terminal both incorrectely render these block characters the same, do you use the same rendering engine as notepad.exe???

Notepad.exe

image

@mangelozzi commented on GitHub (Aug 12, 2020): I disabled the settings one at a time until I got the same result as you. It is a font thing, But not on consolas and cascadia code. Currently I have the following two fonts: ``` //"fontFace": "Roboto Mono", //"fontFace": "Inconsolatago NF", ``` Looking at your screen shots, one can see the Left block is not the same width as the right block. In the aliased ones we can put it down to pixelisation. But on the anti-aliased ones, one can see a bias between the two sides: ![image](https://user-images.githubusercontent.com/19764314/90064026-7a44ab00-dcea-11ea-80d3-377c3ec57810.png) Its strange that these fonts render okay on other apps but not windows terminal, I suspect there is something not quite right at play here. Maybe you could try these fonts and see whats happening with the rendering?: - Robto Mono here: <https://fonts.google.com/specimen/Roboto+Mono> - Inconsolta Go Nerd Font: <https://www.nerdfonts.com/font-downloads> (in particular <https://github.com/ryanoasis/nerd-fonts/releases/download/v2.1.0/InconsolataGo.zip>) PS these are my font settings: ``` "fontSize": 13, "antialiasingMode": "aliased", "fontWeight" : "bold", "fontFace": "Roboto Mono", "cursorShape" : "filledBox", ``` # Miscrosoft word: ![image](https://user-images.githubusercontent.com/19764314/90065480-a2350e00-dcec-11ea-8964-174944a2b62a.png) # Windows Terminal: Roboto Mono: ![image](https://user-images.githubusercontent.com/19764314/90065844-2c7d7200-dced-11ea-8006-a09852469190.png) Inconsolata Go Nerd font: ![image](https://user-images.githubusercontent.com/19764314/90065709-f5a75c00-dcec-11ea-8ee3-cd61d666e2e5.png) # Cmder Inconsolata Go Nerd font: ![image](https://user-images.githubusercontent.com/19764314/90066245-c5ac8880-dced-11ea-9aa6-40e61178d511.png) Roboto Mono: ![image](https://user-images.githubusercontent.com/19764314/90066379-ee348280-dced-11ea-8283-f383fb9ffc29.png) What I have seen is that notepad.exe and windows terminal both incorrectely render these block characters the same, do you use the same rendering engine as notepad.exe??? # Notepad.exe ![image](https://user-images.githubusercontent.com/19764314/90066557-2e940080-dcee-11ea-9acc-bf2e6ea480c3.png)
claunia commented 2026-01-31 02:13:07 +00:00
Author
Owner
Copy Link

@sebastienros commented on GitHub (Aug 12, 2020):

I am facing a similar issue, trying to render ▃ which is https://www.compart.com/en/unicode/U+2583
It renders as a unknown char in the terminal, using the default font (Cascadia Mono), but works fine in Notepad using the same font.
Terminal:

image

Notepad:

image

@sebastienros commented on GitHub (Aug 12, 2020): I am facing a similar issue, trying to render ▃ which is https://www.compart.com/en/unicode/U+2583 It renders as a unknown char in the terminal, using the default font (Cascadia Mono), but works fine in Notepad using the same font. Terminal: ![image](https://user-images.githubusercontent.com/1165805/90074395-f968bd80-dcaf-11ea-9c3a-ac319787df4a.png) Notepad: ![image](https://user-images.githubusercontent.com/1165805/90074435-130a0500-dcb0-11ea-98f0-cb9508e9396b.png)
claunia commented 2026-01-31 02:13:08 +00:00
Author
Owner
Copy Link

@DHowett commented on GitHub (Aug 12, 2020):

This is not a similar issue. You're probably seeing the result of powershell/psreadline not supporting all codepoints.

@DHowett commented on GitHub (Aug 12, 2020): This is not a similar issue. You're probably seeing the result of powershell/psreadline not supporting all codepoints.
claunia commented 2026-01-31 02:13:08 +00:00
Author
Owner
Copy Link

@sebastienros commented on GitHub (Aug 12, 2020):

@DHowett Thanks, I agree, it works in another shell (Azure cloud for instance)

@sebastienros commented on GitHub (Aug 12, 2020): @DHowett Thanks, I agree, it works in another shell (Azure cloud for instance)
claunia commented 2026-01-31 02:13:08 +00:00
Author
Owner
Copy Link

@DHowett commented on GitHub (Aug 12, 2020):

(You're seeing something similar to https://github.com/PowerShell/PSReadLine/issues/1594 or https://github.com/PowerShell/PSReadLine/issues/1329, even though they mention emoji.)

@DHowett commented on GitHub (Aug 12, 2020): (You're seeing something similar to https://github.com/PowerShell/PSReadLine/issues/1594 or https://github.com/PowerShell/PSReadLine/issues/1329, even though they mention emoji.)
claunia commented 2026-01-31 02:13:08 +00:00
Author
Owner
Copy Link

@DHowett commented on GitHub (Aug 13, 2020):

Well, I've got good news and bad news.

Here's the left/right block glyphs from Roboto

image

and here's the left/right block glyphs from InconsolataGo

image

It looks like we're falling back to ... Segoe UI Symbol.

Segoe UI Symbol's version of U+258C takes up the entire cell (!)

image

@DHowett commented on GitHub (Aug 13, 2020): Well, I've got good news and bad news. Here's the left/right block glyphs from Roboto ![image](https://user-images.githubusercontent.com/189190/90080512-a8f95c00-dcbf-11ea-917a-d5152ec5343b.png) and here's the left/right block glyphs from InconsolataGo ![image](https://user-images.githubusercontent.com/189190/90080527-b0206a00-dcbf-11ea-92ab-594894932be4.png) It looks like we're falling back to ... Segoe UI Symbol. Segoe UI Symbol's version of U+258C takes up the entire cell (!) ![image](https://user-images.githubusercontent.com/189190/90081938-6afe3700-dcc3-11ea-9d0f-9812f585b6c0.png)
claunia commented 2026-01-31 02:13:08 +00:00
Author
Owner
Copy Link

@DHowett commented on GitHub (Aug 13, 2020):

/dup #4130

@DHowett commented on GitHub (Aug 13, 2020): /dup #4130
claunia commented 2026-01-31 02:13:09 +00:00
Author
Owner
Copy Link

@ghost commented on GitHub (Aug 13, 2020):

Hi! We've identified this issue as a duplicate of another one that already exists on this Issue Tracker. This specific instance is being closed in favor of tracking the concern over on the referenced thread. Thanks for your report!

@ghost commented on GitHub (Aug 13, 2020): Hi! We've identified this issue as a duplicate of another one that already exists on this Issue Tracker. This specific instance is being closed in favor of tracking the concern over on the referenced thread. Thanks for your report!
claunia commented 2026-01-31 02:13:09 +00:00
Author
Owner
Copy Link

@mangelozzi commented on GitHub (Aug 13, 2020):

@DHowett Thanks for looking into that and figuring it out.

Okay so for me the Nerd fonts have the glyps for folder icons, but don't display well in some situations. None nerd fonts display well but don't have the extra folder icon glyphs. It would be really helpful if one could specificy a full back font. So if the glyp is not found in the main font, it uses the fall back font.

PS what tool did you use to inspect the font glyps? I would like to try inspect some fonts too.
PSS The word picture above is invalid, you are correct it did fall back to a different font (even though I selected it and changed the font, I checked now if I click within the region it is not the selected font.

@mangelozzi commented on GitHub (Aug 13, 2020): @DHowett Thanks for looking into that and figuring it out. Okay so for me the Nerd fonts have the glyps for folder icons, but don't display well in some situations. None nerd fonts display well but don't have the extra folder icon glyphs. It would be really helpful if one could specificy a full back font. So if the glyp is not found in the main font, it uses the fall back font. PS what tool did you use to inspect the font glyps? I would like to try inspect some fonts too. PSS The word picture above is invalid, you are correct it did fall back to a different font (even though I selected it and changed the font, I checked now if I click within the region it is not the selected font.
claunia commented 2026-01-31 02:13:09 +00:00
Author
Owner
Copy Link

@DHowett commented on GitHub (Aug 13, 2020):

So, I was looking at the font in the open-source/FOSS font editor FontForge. 😄 It's got a bit of a learning curve, but it is worth knowing a bit about.

@DHowett commented on GitHub (Aug 13, 2020): So, I was looking at the font in the open-source/FOSS font editor [FontForge](https://fontforge.org/). :smile: It's got a bit of a learning curve, but it is worth knowing a bit about.
Sign in to join this conversation.
No Branch/Tag Specified
Branches Tags
Labels
Clear labels
⛺ Reserved
A11yCO
A11yMAS
A11ySev1
A11ySev2
A11ySev3
A11yTTValidated
A11yUsable
A11yVoiceAccess
A11yWCAG
Area-Accessibility
Area-AtlasEngine
Area-AzureShell
Area-Build
Area-Build
Area-Chat
Area-CmdPal
Area-CodeHealth
Area-Commandline
Area-CookedRead
Area-DefApp
Area-Extensibility
Area-Fonts
Area-GroupPolicy
Area-i18n
Area-Input
Area-Interaction
Area-Interop
Area-Localization
Area-Output
Area-Performance
Area-Portable
Area-Quality
Area-Remoting
Area-Rendering
Area-Schema
Area-Server
Area-Settings
Area-SettingsUI
Area-ShellExtension
Area-ShellExtension
Area-ShellExtension
Area-Suggestions
Area-Suggestions
Area-TerminalConnection
Area-TerminalControl
Area-Theming
Area-UserInterface
Area-VT
Area-Windowing
Area-WPFControl
AutoMerge
Blocking-Ingestion
Culprit-Centennial
Culprit-WinUI
Disability-All
Disability-Blind
Disability-LowVision
Disability-Mobility
External-Blocked-WinUI3
Fixed
Gathering-Data
good first issue
HCL-E+D
HCL-WindowsTerminal
Help Wanted
Impact-Compatibility
Impact-Compliance
Impact-Correctness
Impact-Visual
In-PR
InclusionBacklog
InclusionBacklog-Windows TerminalWin32
InclusionCommitted-202206
Issue-Bug
Issue-Docs
Issue-Feature
Issue-Feature
Issue-Question
Issue-Samples
Issue-Scenario
Issue-Task
Needs-Attention
Needs-Author-Feedback
Needs-Bisect
Needs-Discussion
Needs-Repro
Needs-Tag-Fix
Needs-Tag-Fix
Needs-Triage
No-Recent-Activity
Priority-0
Priority-1
Priority-2
Priority-3
Product-Cmd.exe
Product-Colortool
Product-Colortool
Product-Colortool
Product-Conhost
Product-Conpty
Product-Meta
Product-Powershell
Product-Terminal
Product-WSL
pull-request
Mirrored from GitHub Pull Request
 Resolution-Answered
Resolution-By-Design
Resolution-Duplicate
Resolution-External
Resolution-Fix-Available
Resolution-Fix-Committed
Resolution-No-Repro
Resolution-Won't-Fix
Severity-Blocking
Severity-Crash
Severity-DataLoss
spam
this-will-be-a-breaking-change
Tracking-External
WindowsTerminal_Win32
Work-Item
zAskModeBug
zInbox-Bug
No Label Resolution-Duplicate
Milestone
No items
No Milestone
Projects
Clear projects
No project
Assignees
Clear assignees
claunia
No Assignees
1 Participants
Notifications
Due Date
No due date set.
Dependencies

No dependencies set.

Reference: starred/terminal#10124
Delete Branch "%!s()"

Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?