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

ANSI control sequence ESC M uses incorrect default background color (Windows Console Host) #5861

New Issue
Open
opened 2026-01-31 00:23:41 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 00:23:41 +00:00
Owner
Copy Link

Originally created by @12Me21 on GitHub (Jan 11, 2020).

Environment

Microsoft Windows [Version 10.0.18362.535]

Steps to reproduce

Screen background is set to any color other than 0:
image

From bash in WSL:

clear
echo -e "\e[H\e[1T"

image
The control sequence ESC [ 1 T scrolls down 1 line, and fills the new line with the background color
image

clear
echo -e "\e[H\eM"

image
The control sequence ESC M also scrolls down 1 line, but uses color 0 instead of the background color
image

Applications like less, man, and vim all use ESC M for scrolling, and scrolling upwards causes new lines to be filled with the wrong background color:
image

ESC [ L (insert lines) appears to have the same problem.

Additionally, this only happens when the current background color is set to the default. otherwise, ESC M acts correctly (try inserting \e[41m after the H in the command)

Expected behavior

Both control sequences should have the same behavior

Actual behavior

ESC M uses color 0 instead of the default color, when the background color is set to the default

Originally created by @12Me21 on GitHub (Jan 11, 2020). <!-- 🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨 I ACKNOWLEDGE THE FOLLOWING BEFORE PROCEEDING: 1. If I delete this entire template and go my own path, the core team may close my issue without further explanation or engagement. 2. If I list multiple bugs/concerns in this one issue, the core team may close my issue without further explanation or engagement. 3. If I write an issue that has many duplicates, the core team may close my issue without further explanation or engagement (and without necessarily spending time to find the exact duplicate ID number). 4. If I leave the title incomplete when filing the issue, the core team may close my issue without further explanation or engagement. 5. If I file something completely blank in the body, the core team may close my issue without further explanation or engagement. All good? Then proceed! --> <!-- This bug tracker is monitored by Windows Terminal development team and other technical folks. **Important: When reporting BSODs or security issues, DO NOT attach memory dumps, logs, or traces to Github issues**. Instead, send dumps/traces to secure@microsoft.com, referencing this GitHub issue. If this is an application crash, please also provide a Feedback Hub submission link so we can find your diagnostic data on the backend. Use the category "Apps > Windows Terminal (Preview)" and choose "Share My Feedback" after submission to get the link. Please use this form and describe your issue, concisely but precisely, with as much detail as possible. --> # Environment ```none Microsoft Windows [Version 10.0.18362.535] ``` # Steps to reproduce Screen background is set to any color other than 0: ![image](https://user-images.githubusercontent.com/4053256/72211525-e03e2b00-349a-11ea-8645-50e1770e13ca.png) From bash in WSL: ``` clear echo -e "\e[H\e[1T" ``` ![image](https://user-images.githubusercontent.com/4053256/72211510-af5df600-349a-11ea-8935-b99defee4ddc.png) The control sequence `ESC [ 1 T` scrolls down 1 line, and fills the new line with the background color ![image](https://user-images.githubusercontent.com/4053256/72211505-758cef80-349a-11ea-986a-b6e1dc3033e2.png) ``` clear echo -e "\e[H\eM" ``` ![image](https://user-images.githubusercontent.com/4053256/72211539-124f8d00-349b-11ea-9733-042c0eea65fb.png) The control sequence `ESC M` also scrolls down 1 line, but uses color 0 instead of the background color ![image](https://user-images.githubusercontent.com/4053256/72211542-23000300-349b-11ea-99d2-2bd037fddd01.png) Applications like `less`, `man`, and `vim` all use `ESC M` for scrolling, and scrolling upwards causes new lines to be filled with the wrong background color: ![image](https://user-images.githubusercontent.com/4053256/72211655-01078000-349d-11ea-8242-08888480eae7.png) `ESC [ L` (insert lines) appears to have the same problem. Additionally, this only happens when the current background color is set to the default. otherwise, ESC M acts correctly (try inserting `\e[41m` after the `H` in the command) # Expected behavior Both control sequences should have the same behavior # Actual behavior `ESC M` uses color 0 instead of the default color, when the background color is set to the default
claunia added the Resolution-Duplicate label 2026-01-31 00:23:41 +00:00
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#5861
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?