tmux.conf

# Tmux Configuration

set -g prefix C-a
set-option -g default-terminal "xterm-256color"
set-option -ga terminal-overrides ",xterm-256color:RGB"
set-option -sg escape-time 10
set -g focus-events on
set -g extended-keys on
set -g extended-keys-format csi-u
set -g renumber-windows on
source-file "${HOME}/.config/tmuxthemes/gruvbox.tmuxtheme"

# Popup shortcut
bind-key g display-popup -E

# Pane resize shortcut
bind-key -r h resize-pane -L 10
bind-key -r j resize-pane -D 10
bind-key -r k resize-pane -U 10
bind-key -r l resize-pane -R 10

# Custom toggle for horizontal and vertical layouts
bind-key Space if-shell -F '#{==:#{pane_width},#{window_width}}' \
    'select-layout even-horizontal' \
    'select-layout even-vertical'

# Smart pane switching with awareness of vim/emacs splits.
# See: https://github.com/christoomey/vim-tmux-navigator
is_vim_emacs="ps -o state= -o comm= -t '#{pane_tty}' \
	      | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$|emacs.*$'"
bind-key -n 'C-h' if-shell "$is_vim_emacs" 'send-keys C-h'  'select-pane -L'
bind-key -n 'C-j' if-shell "$is_vim_emacs" 'send-keys C-j'  'select-pane -D'
bind-key -n 'C-k' if-shell "$is_vim_emacs" 'send-keys C-k'  'select-pane -U'
bind-key -n 'C-l' if-shell "$is_vim_emacs" 'send-keys C-l'  'select-pane -R'
tmux_version='$(tmux -V | sed -En "s/^tmux ([0-9]+(.[0-9]+)?).*/\1/p")'
if-shell -b '[ "$(echo "$tmux_version < 3.0" | bc)" = 1 ]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim_emacs\" 'send-keys C-\\'  'select-pane -l'"
if-shell -b '[ "$(echo "$tmux_version >= 3.0" | bc)" = 1 ]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim_emacs\" 'send-keys C-\\\\'  'select-pane -l'"

bind-key -T copy-mode-vi 'C-h' select-pane -L
bind-key -T copy-mode-vi 'C-j' select-pane -D
bind-key -T copy-mode-vi 'C-k' select-pane -U
bind-key -T copy-mode-vi 'C-l' select-pane -R
bind-key -T copy-mode-vi 'C-\' select-pane -l