Description

In tmux 3.7, bg= in a style only paints behind characters — fill= is required to cover the full bar width. During rename-session/rename-window, the command prompt left the underlying colored status segments (orange arrows etc.) visible through the empty space.

• configure_status_bar: Replace deprecated status-bg/status-fg/status-attr with status-style "bg=$G0,fg=$G4,fill=$G0"
• configure_ui_styles: Add fill=$G0 to message-style and message-command-style so the entire bar is covered with the dark background when the command prompt is active

- tmux_set status-bg "$G0"
- tmux_set status-fg "$G4"
- tmux_set status-attr none
+ tmux_set status-style "bg=$G0,fg=$G4,fill=$G0"

- tmux_set message-style         "fg=$TC,bg=$G0"
- tmux_set message-command-style "fg=$TC,bg=$G0"
+ tmux_set message-style         "fg=$TC,bg=$G0,fill=$G0"
+ tmux_set message-command-style "fg=$TC,bg=$G0,fill=$G0"

Checklist

• Description above explains the change and motivation
• Tested with at least one theme (gold, everforest, etc.)