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Improve tmux config: CSI u extended keys, C-Space prefix, copy-mode fixes #10

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Merged
brianarn merged 1 commit into from
Mar 7, 2026
Merged

Improve tmux config: CSI u extended keys, C-Space prefix, copy-mode fixes #10

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20 changes: 14 additions & 6 deletions home/.tmux.conf
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Original file line number Diff line number Diff line change
@@ -1,7 +1,8 @@
# Set prefix to ctrl-a, freeing up ctrl-b
set-option -g prefix C-a
# Set prefix to ctrl-space, freeing up ctrl-a for shell line-start
set-option -g prefix C-Space
unbind-key C-b
bind-key C-a send-prefix
unbind-key C-a
bind-key C-Space send-prefix

### Settings

Expand All @@ -16,6 +17,11 @@ if-shell 'infocmp -x tmux-256color >/dev/null 2>&1' \
# Truecolor support for common terminal types
set-option -as terminal-features ',xterm-256color:RGB,screen-256color:RGB,tmux-256color:RGB'

# Extended key sequences (CSI u) — forwards Shift+Enter etc. to apps
set-option -g extended-keys always
set-option -s extended-keys-format csi-u
set-option -as terminal-features ',xterm-256color:extkeys,tmux-256color:extkeys'

# Keep a lot of scrollback buffer
set-option -g history-limit 50000

Expand Down Expand Up @@ -59,7 +65,7 @@ set-option -g allow-passthrough on
bind-key r source-file ~/.tmux.conf \; display-message "Reloaded tmux.conf"

# Toggle last active window
bind-key C-a last-window
bind-key C-Space last-window

## Windows

Expand Down Expand Up @@ -93,8 +99,10 @@ bind-key -r L resize-pane -R 5

# Begin selection
bind-key -T copy-mode-vi v send -X begin-selection
# Select line
bind-key -T copy-mode-vi V send -X select-line
# Toggle rectangle selection
bind-key -T copy-mode-vi V send -X rectangle-toggle
bind-key -T copy-mode-vi C-v send -X rectangle-toggle
# Yank selection and exit copy mode
bind-key -T copy-mode-vi y send -X copy-selection-and-cancel

Expand Down Expand Up @@ -139,7 +147,7 @@ set-window-option -g window-status-separator ""
set-window-option -g window-status-style "fg=colour8"

# Active window title (base0B green bg, consistent across base16/base24)
set-window-option -g window-status-current-style "bg=colour2,fg=colour7,bold"
set-window-option -g window-status-current-style "bg=colour2,fg=colour0,bold"

# Activity and bell indicators
set-window-option -g window-status-activity-style "fg=colour3,bold"
Expand Down