CSI 18t "Report Size In Characters" not working. #18397

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opened 2026-01-31 06:12:41 +00:00 by claunia · 0 comments
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Originally created by @PitWD on GitHub (Sep 8, 2022).

Windows Terminal version

1.15.2282.0

Windows build number

10.0.19044.1889

Other Software

Own project.

Steps to reproduce

Start CMD or PS within Terminal.
Run app which activates VT-Modes for IN and OUT.
Send CSI 18 t to stdout.
Read (wait for) response on stdin.

Expected Behavior

A response from the Terminal a la:
CSI 'Decimal-Rows' ; 'Decimal-Columns' t

Actual Behavior

No response from the Terminal.
But i.e. sending CSI 6 n (Report Actual Cursor Position) results as expected in a response a la:
CSI 'Decimal-Row' ; 'Decimal-Column' R

Originally created by @PitWD on GitHub (Sep 8, 2022). ### Windows Terminal version 1.15.2282.0 ### Windows build number 10.0.19044.1889 ### Other Software Own project. ### Steps to reproduce Start CMD or PS within Terminal. Run app which activates VT-Modes for IN and OUT. Send **CSI 18 t** to stdout. Read (wait for) response on stdin. ### Expected Behavior A response from the Terminal a la: **CSI** 'Decimal-Rows' **;** 'Decimal-Columns' **t** ### Actual Behavior No response from the Terminal. But i.e. sending **CSI 6 n** (Report Actual Cursor Position) results as expected in a response a la: **CSI** 'Decimal-Row' **;** 'Decimal-Column' **R**
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Reference: starred/terminal#18397