tmux.conf

# ==========================
# General Options
# ==========================
set -g history-limit 1000000
set-option -g mouse on
set -g base-index 1
set -g pane-base-index 1
set-option -g renumber-windows on
setw -g mode-keys vi
set-window-option -g xterm-keys on

set -g default-terminal "${TERM}"
# set-option -g default-command "reattach-to-user-namespace -l zsh" # For macOS

# ==========================
# Keybindings
# ==========================
# Remap prefix to Control + a
set -g prefix C-a
unbind C-b
bind C-a send-prefix

# Switch panes with Ctrl + Arrow Keys
bind-key -n C-Left select-pane -L
bind-key -n C-Right select-pane -R
bind-key -n C-Up select-pane -U
bind-key -n C-Down select-pane -D

# Create 4 split panes (2x2 grid)
bind-key g split-window -h -c "#{pane_current_path}" \; split-window -v -c "#{pane_current_path}" \; select-pane -t 0 \; split-window -v -c "#{pane_current_path}"

# Create 3 split panes (main top-left 70%, sidebar top-right 30%, bottom 25%)
bind-key G split-window -v -c "#{pane_current_path}" \; select-pane -U \; split-window -h -c "#{pane_current_path}" \; resize-pane -t 2 -x 30% \; resize-pane -t 3 -y 25% \; select-pane -t 1

# Copy mode vim-style bindings
bind-key -T copy-mode-vi v send-keys -X begin-selection
bind-key -T copy-mode-vi y send-keys -X copy-pipe-and-cancel "pbcopy"
bind-key -T copy-mode-vi Enter send-keys -X copy-pipe-and-cancel "pbcopy"

# ==========================
# Plugins
# ==========================
set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'tmux-plugins/tmux-sensible'
set -g @plugin 'catppuccin/tmux'
set -g @plugin 'tmux-plugins/tmux-battery'
set -g @plugin 'tmux-plugins/tmux-yank'
set -g @plugin '2kabhishek/tmux-tilit'

# ==========================
# Plugin Configurations
# ==========================
set -g @tilish-prefix 'M-space'

# ==========================
# Theme - Catppuccin
# Config is from https://github.com/catppuccin/tmux/discussions/317#discussioncomment-11064512
# ==========================
set -g @catppuccin_flavor "macchiato"
set -g @catppuccin_status_background "none"
set -g @catppuccin_window_status_style "none"
set -g @catppuccin_pane_status_enabled "off"
set -g @catppuccin_pane_border_status "off"

# status left look and feel
# Session name highlights teal when prefix (Ctrl-a) is active
set -g status-left-length 100
set -g status-left ""
set -ga status-left "#{?client_prefix,#{#[bg=#{@thm_teal},fg=#{@thm_bg},bold] 🍱 #S },#{#[bg=#{@thm_bg},fg=#{@thm_green}] 🍱 #S }}"
set -ga status-left "#[bg=#{@thm_bg},fg=#{@thm_overlay_0},none]│"
set -ga status-left "#[bg=#{@thm_bg},fg=#{@thm_blue}]  #{=/-32/...:#{s|$USER|~|:#{b:pane_current_path}}} "
set -ga status-left "#[bg=#{@thm_bg},fg=#{@thm_overlay_0},none]#{?window_zoomed_flag,│,}"
set -ga status-left "#[bg=#{@thm_bg},fg=#{@thm_yellow}]#{?window_zoomed_flag,  zoom ,}"

# status right look and feel
# PREFIX badge appears when prefix (Ctrl-a) is active
set -g status-right-length 100
set -g status-right ""
set -ga status-right "#{?client_prefix,#{#[bg=#{@thm_teal},fg=#{@thm_bg},bold] PREFIX },}"
set -ga status-right "󰭦 %Y-%m-%d 󰅐 %H:%M "

# Configure Tmux
set -g status-position top
set -g status-style "bg=#{@thm_bg}"
set -g status-justify "absolute-centre"

# pane border look and feel
setw -g pane-border-status top
setw -g pane-border-format ""
setw -g pane-active-border-style "fg=white"
setw -g pane-border-style "fg=#5b6078"
setw -g pane-border-lines single

# window look and feel
set -wg automatic-rename on
set -g automatic-rename-format "Window"

set -g window-status-format " #I#{?#{!=:#{window_name},Window},: #W,}#{?window_zoomed_flag, 📌,} "
set -g window-status-style "fg=#6e738d"
set -g window-status-last-style "fg=#8087a2"
set -g window-status-activity-style "bg=#{@thm_red},fg=#{@thm_bg}"
set -g window-status-bell-style "bg=#{@thm_red},fg=#{@thm_bg},bold"
set -gF window-status-separator "#[bg=#{@thm_bg},fg=#{@thm_overlay_0}]│"

set -g window-status-current-format " 🫶 #I#{?#{!=:#{window_name},Window},: #W,}#{?window_zoomed_flag, 📌 ,} "
set -g window-status-current-style "bg=#{@thm_green},fg=#{@thm_bg},bold"

set -g pane-border-lines double

# Indicate active pane by colouring only half of the border in windows with 
# exactly two panes, by displaying arrow markers, by drawing both or neither.
# [off | colour | arrows | both]
set -g pane-border-indicators both

# Enables tracking of focus events, allows tmux to respond when the terminal
# window gains or looses focus
set-option -g focus-events on



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

# Unbind M-Enter (Option+Enter) from splitting panes (set by tmux-tilit)
unbind -T root M-Enter