Bug Report: Control+Space not sent to terminal emulator. #4000

New Issue

claunia · 2026-01-30T23:35:20Z

claunia commented

2026-01-30 23:35:20 +00:00

Originally created by @christianparpart on GitHub (Sep 24, 2019).

Originally assigned to: @zadjii-msft on GitHub.

Environment

Windows build number: Version 10.0.18362.356
Windows Terminal version 0.4.2382.0

Any other software? yes, **mine** (also a terminal emulator)

Steps to reproduce

Best way to see this (if you don't have key tracing on in our own terminal app),
fire up a TMUX session, have it configured with at least one more line, like this:

bind ^space next-window

which basically states, that Ctrl+Space will cause the terminal to switch to the next window.

Except, that on Windows Terminal (or my terminal emulator, using ConPTY), it doesn't. :-)

Expected behavior

TMUX windows switching (i.e.: NUL-byte sent to PTY slave)

Actual behavior

Action Ignored.

Originally created by @christianparpart on GitHub (Sep 24, 2019). Originally assigned to: @zadjii-msft on GitHub.   # Environment ```none Windows build number: Version 10.0.18362.356 Windows Terminal version 0.4.2382.0 Any other software? yes, **mine** (also a terminal emulator) ``` # Steps to reproduce Best way to see this (if you don't have key tracing on in our own terminal app), fire up a [TMUX](https://github.com/tmux/tmux) session, have it configured with at least one more line, like this: ``` bind ^space next-window ``` which basically states, that Ctrl+Space will cause the terminal to switch to the next window. Except, that on Windows Terminal (or my terminal emulator, using ConPTY), it doesn't. :-)  # Expected behavior TMUX windows switching (i.e.: NUL-byte sent to PTY slave) # Actual behavior Action Ignored.

claunia added the Resolution-Fix-Committed Issue-Bug Area-Input Area-VT Needs-Author-Feedback Product-Conpty labels 2026-01-30 23:35:20 +00:00