[PR #2816] Initialize the VT tab stops when a buffer is created in VT mode #25097

New Issue

claunia · 2026-01-31T09:07:15Z

claunia commented

2026-01-31 09:07:15 +00:00

Original Pull Request: https://github.com/microsoft/terminal/pull/2816

State: closed
Merged: Yes

Summary of the Pull Request

If a user has VirtualTerminalLevel set, then SetConsoleMode(ENABLE_VIRTUAL_TERMINAL_PROCESSING) won't set our tab stops, because we're never going from vt off -> on.
So, if VT mode is enabled, construct the VT tab stops when the buffer is created.

PR Checklist

Closes dark theme scrollbars (#411)
I work here
Tests added/passed

Detailed Description of the Pull Request / Additional comments

Big shout-out to @j4james for basically doing all the work on what I thought was an impossible bug. Thanks!

**Original Pull Request:** https://github.com/microsoft/terminal/pull/2816 **State:** closed **Merged:** Yes --- ## Summary of the Pull Request If a user has `VirtualTerminalLevel` set, then `SetConsoleMode(ENABLE_VIRTUAL_TERMINAL_PROCESSING)` won't set our tab stops, because we're never going from vt off -> on. So, if VT mode is enabled, construct the VT tab stops when the buffer is created. ## PR Checklist * [x] Closes #411 * [x] I work here * [x] Tests added/passed ## Detailed Description of the Pull Request / Additional comments Big shout-out to @j4james for basically doing all the work on what I thought was an impossible bug. Thanks!

claunia added the pull-request label 2026-01-31 09:07:15 +00:00

claunia closed this issue

2026-01-31 09:07:15 +00:00

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dev/migrie/f/reflow-buffer-on-resize-002

wpf-renderer-revert

dev/miniksa/draw

release-0.9

dev/miniksa/tabs-color-fix

dev/miniksa/4309

dev/migrie/f/just-wrapping

dev/migrie/b/3490-try-another-resize-algo

release-0.8

dev/migrie/b/3490-a-simpler-resize

dev/migrie/b/3490-resize-down

dev/miniksa/4254

dev/migrie/f/conpty-wrapped-lines-2

dev/migrie/b/be-better-at-hiding

dev/migrie/f/3327-xaml-theming-proto

dev/miniksa/gardening2

release-0.7

dev/duhowett/conpty-flags

dev/migrie/f/603-vintage-opacity

dev/migrie/PR#3181-comments

dev/duhowett/font-64

release-0.5

dev/migrie/b/663-paste-lf-always

dev/migrie/b/2011-reordered-fallthrough-strings

dev/migrie/b/411-init-tab-stops

dev/migrie/b/json-patching-is-hard

dev/migrie/b/2455-try-getting-tests-working

dev/migrie/b/1223-change-256-table

dev/migrie/f/2171-openterm.cmd

dev/migrie/f/drag-panes

dev/migrie/f/2046-command-palette

release-0.3

dev/miniksa/manager

dev/migrie/f/non-terminal-panes

dev/migrie/f/passthrough-2019

dev/miniksa/shared_pch

dev/migrie/f/1897-less-duplicated-work

release-0.2

dev/cazamor/mcs/viewport-selection

dev/duhowett/version_hack

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Reference: starred/terminal#25097