Home/End keys not recognised inside tmux #6046
Description
The bug
When using tmux, bare Home and End keypresses don't seem to be recognised by name. (The real terminal is Windows Terminal as xterm-256color, and outside of tmux the keys are correctly detected.)
textual keys output for various combinations inside tmux:
Key(key='\x01', character='\x01', name='\x01', is_printable=False)
Key(key='\x04', character='\x04', name='\x04', is_printable=False)
Key(key='pageup', character=None, name='pageup', is_printable=False)
Key(key='pagedown', character=None, name='pagedown', is_printable=False)
Key(key='shift+home', character=None, name='shift_home', is_printable=False)
Key(key='shift+end', character=None, name='shift_end', is_printable=False)
Key(key='shift+pageup', character=None, name='shift_pageup', is_printable=False)
Key(key='shift+pagedown', character=None, name='shift_pagedown', is_printable=False)
Key(key='ctrl+home', character=None, name='ctrl_home', is_printable=False)
Key(key='ctrl+end', character=None, name='ctrl_end', is_printable=False)
Key(key='ctrl+pageup', character=None, name='ctrl_pageup', is_printable=False)
Key(key='ctrl+pagedown', character=None, name='ctrl_pagedown', is_printable=False)
Key(key='alt+home', character=None, name='alt_home', is_printable=False)
Key(key='alt+end', character=None, name='alt_end', is_printable=False)
Key(key='alt+pageup', character=None, name='alt_pageup', is_printable=False)
Key(key='alt+pagedown', character=None, name='alt_pagedown', is_printable=False)
Key detection is the same for both 3.0.0 (used by Posting) and the latest 5.3.0.
Textual Diagnostics
Versions
| Name | Value |
|---|---|
| Textual | 3.0.0 |
| Rich | 14.0.0 |
Python
| Name | Value |
|---|---|
| Version | 3.12.11 |
| Implementation | CPython |
| Compiler | GCC 15.1.1 20250425 |
| Executable | /home/user/.local/share/pipx/venvs/posting/bin/python |
Operating System
| Name | Value |
|---|---|
| System | Linux |
| Release | 6.6.87.1-microsoft-standard-WSL2 |
| Version | #1 SMP PREEMPT_DYNAMIC Mon Apr 21 17:08:54 UTC 2025 |
Terminal
| Name | Value |
|---|---|
| Terminal Application | tmux (3.5a) |
| TERM | tmux-256color |
| COLORTERM | truecolor |
| FORCE_COLOR | Not set |
| NO_COLOR | Not set |
Rich Console options
| Name | Value |
|---|---|
| size | width=273, height=54 |
| legacy_windows | False |
| min_width | 1 |
| max_width | 273 |
| is_terminal | True |
| encoding | utf-8 |
| max_height | 54 |
| justify | None |
| overflow | None |
| no_wrap | False |
| highlight | None |
| markup | None |
| height | None |