The for loops iterating over edge_border() results in layout_pair() used
top, bottom, left, right as loop variable names, which shadowed the
function's local variables tracking current layout position. This caused
sibling panes to be positioned at incorrect offsets when splitting a pane
that was itself a nested Pair (e.g. splitting the left pane horizontally
would cause the right pane to shift down half the screen).
Rename loop variables to etop, ebottom, eleft, eright to avoid shadowing.
- Rename all options from pane_title_* to window_title_*
- Use foreground/background instead of fg/bg in color option names
- Change color options to to_color_or_none defaulting to None,
falling back to corresponding tab bar colors
- Add bell_symbol, activity_symbol, progress_percent template vars
using existing bell_on_tab and tab_activity_symbol options
- Add custom script support via window_title_bar.py in config dir
(draw_window_title function exposed as {custom} in templates)
- Update C structs, Python references, and regenerate config files
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Add an optional title bar that displays above or below each window pane
when multiple windows are visible in a tab. This is similar to tmux's
pane-border-format or Terminator's pane title bars.
New configuration options:
- pane_title_bar: none/top/bottom (default: none)
- pane_title_template: f-string template (same syntax as tab_title_template)
- active_pane_title_template: override for active pane
- pane_title_bar_active_fg/bg: colors for active pane title
- pane_title_bar_inactive_fg/bg: colors for inactive pane titles
- pane_title_bar_align: left/center/right text alignment
The title bars are rendered using virtual Screen objects registered with
the GPU, following the same model as the tab bar. Title bars are
automatically hidden when only a single window is visible.
Ref: https://github.com/kovidgoyal/kitty/discussions/9448
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Tools like Easy Move+Resize use the macOS Accessibility API to find and
move/resize windows. They call AXUIElementCopyElementAtPosition to get the
content view, then use kAXWindowAttribute to navigate to the parent window.
The isAccessibilitySelectorAllowed: whitelist was blocking these selectors,
preventing external window management tools (Easy Move+Resize) from working with
kitty.
Fixes#5561
