REP corrupts some Unicode characters (emoji)

[dgl]

Windows Terminal version

1.18.1462.0

Windows build number

10.0.25300.1000

Other Software

No response

Steps to reproduce

Repeating some emoji with an escape sequence results in mojibake. In WSL or any Linux:

$ printf '\e[6n💓\e[1b\e[6n\n';cat
💓�
^[[4;1R^[[4;4R^C

Expected Behavior

On a recent xterm (run with xterm -fa Mono -fs 14, to get TrueType fonts) the output is:

$ printf '\e[6n💓\e[1b\e[6n\n';cat
💓💓
^[[4;1R^[[4;5R^C

Windows Terminal also behaves as expected for ✅, this only affects some emoji characters.

Actual Behavior

As above, the second character is corrupted, see screenshot too.

[lhecker]

Hey! This issue is a duplicate of #15390. 🙂 I believe #15541 made it possible to fix the issue for this particular escape sequence. I'm not entirely sure which part in our code base doesn't handle surrogate pairs, etc., but I suspect it can be discovered by setting a breakpoint on AdeptDispatch::_FillRect.

/dup #15390

[microsoft-github-policy-service]

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!