dot_tmux.conf

# List of TPM-managed plugins
set -g @plugin "arcticicestudio/nord-tmux"
set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'tmux-plugins/tmux-pain-control'
set -g @plugin 'tmux-plugins/tmux-resurrect'
set -g @plugin 'tmux-plugins/tmux-sensible'
# In order to be executed periodically, the tmux-continuum plugin updates the
# status-right tmux variable. In case some plugin (typically themes, such as
# nord-tmux) overwrites the status-right variable, the autosave feature will
# stop working. To fix this issue, we place tmux-continuum last in the TPM
# plugins list.
set -g @plugin 'tmux-plugins/tmux-continuum'

# -----------------------------------------------------------------------------
# Claude Code CLI Configuration
# -----------------------------------------------------------------------------
# For multiline input in Claude Code when running inside tmux:
#
# Primary method: Option+Enter (⌥+↵)
#   - Requires iTerm2 configured with Option keys set to "Esc+"
#   - Settings: Profiles → Keys → General → Set both Option keys to "Esc+"
#   - Works identically inside and outside tmux
#
# Alternative method: Backslash + Enter (\↵)
#   - Works in all terminals without configuration
#   - More cumbersome but always available
#
# Note: Shift+Enter does not work reliably within tmux sessions due to
# terminal detection issues. Claude Code checks TERM_PROGRAM which reports
# "tmux" instead of "iTerm.app", preventing the /terminal-setup command
# from being available.
# -----------------------------------------------------------------------------

# Ensure tmux automatically opens on boot in iTerm maximised to fullscreen
set -g @continuum-boot 'on'
set -g @continuum-boot-options 'iterm,fullscreen'

# Enable continuous saving and auto-restore of tmux environment
set -g @continuum-restore 'on'

# Force 256 colours and enable extended keys (required for tmux 3.6+)
set -g default-terminal "tmux-256color"
set-option -g terminal-overrides "xterm*:colors=256:Tc,screen:colors=256"
set-option -ga terminal-overrides ",xterm-256color:Tc"

# Enable focus events for better terminal integration
set-option -g focus-events on

# Enable extended keys (required for Option+Enter in tmux 3.6+)
set-option -s extended-keys on
set-option -as terminal-features 'xterm*:extkeys'

# Use vi mode.  To see the available commands:
# C-b :
# list-keys -T copy-mode-vi
set-window-option -g mode-keys vi
set-option -g status-keys vi
unbind [
bind Escape copy-mode # ctrl-b esc
bind-key -Tcopy-mode-vi 'v' send -X begin-selection
bind-key -Tcopy-mode-vi 'y' send -X copy-selection
bind -Tcopy-mode-vi Enter send-keys -X copy-pipe-and-cancel "pbcopy"
setw -g xterm-keys on

# Renumber windows when closed
set-option -g renumber-windows on

# Meta+arrow to switch windows
bind -n M-Left  previous-window
bind -n M-Right next-window
# CTRL-p/n to switch windows
bind-key -n 'C-p' previous-window
bind-key -n 'C-n' next-window
# CTRL-SHIFT-n/p to swap windows right/left
bind-key -n C-S-Left swap-window -t -1\; select-window -t -1
bind-key -n C-S-Right swap-window -t +1\; select-window -t +1

# Use Shift-arrow keys without prefix key to resize panes
bind -n S-Up    resize-pane -U
bind -n S-Down  resize-pane -D
bind -n S-Left  resize-pane -L
bind -n S-Right resize-pane -R

# Smart pane switching with awareness of Vim splits.
# See: https://github.com/christoomey/vim-tmux-navigator
is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
  | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
bind-key -n 'C-h' if-shell "$is_vim" "send-keys C-h"  "select-pane -L"
bind-key -n 'C-j' if-shell "$is_vim" "send-keys C-j"  "select-pane -D"
bind-key -n 'C-k' if-shell "$is_vim" "send-keys C-k"  "select-pane -U"
bind-key -n 'C-l' if-shell "$is_vim" "send-keys C-l"  "select-pane -R"
bind-key -n 'C-\' if-shell "$is_vim" "send-keys C-\\" "select-pane -l"

# Find a window by name
bind-key / command-prompt "find-window %1"

# Disable mouse in tmux
set-option -g mouse off

# Set status bar
set -g status-justify centre
set -g status-bg black
set -g status-fg white
set -g visual-activity on
set-window-option -g window-status-current-style bg=red

# Automatically set window title & titles
setw -g automatic-rename
set-option -g set-titles on
set-option -g set-titles-string '[#I] #T - #W'

# Turn off all bells
set-option -g bell-action none
set-option -g visual-bell off

# C-b r to reload the tmux configuration
bind r source-file ~/.tmux.conf

# If we have a tmuxline snapshot, source it
#if-shell "test -f ~/.tmux_tmuxline.conf" "source ~/.tmux_tmuxline.conf"
#source-file ~/.tmux_tmuxline.conf

# If TMUX plugin manager is not yet installed, install it and then install
# the plugins
if "test ! -d ~/.tmux/plugins/tpm" \
   "run 'git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm && ~/.tmux/plugins/tpm/bin/install_plugins'"

# Initialize TMUX plugin manager (keep this line at the very bottom of
# tmux.conf)
run -b '~/.tmux/plugins/tpm/tpm'