satellite/dotfiles/tmux/tmux.conf

# remap prefix to Control + a
set -g prefix C-a
unbind C-b
bind C-a send-prefix

# don't rename windows automatically
set-option -g allow-rename off

# Fix slow esc
set -sg escape-time 10

# Visual stuff
set -g default-terminal "screen-256color"
# set -ga terminal-overrides ",screen-256color:Tc"
set -ga terminal-overrides ",xterm-256color:Tc"
# set -g -a terminal-overrides ',*:Ss=\E[%p1%d q:Se=\E[2 q' # Supposedly helps with cursor shapes under vim (spoiler: it does not)

# Split panes with \ and -
bind \\ split-window -h
bind - split-window -v
unbind '"'
unbind %

# Zooming
unbind C-z
bind -n C-z resize-pane -Z

# Vim-mode
set-window-option -g mode-keys vi

# Vim like mode for leaving insert mode
unbind [ # unbind the default way to copy text
bind -T prefix j copy-mode # allow exiting insert mode with C-a j

# Vim like keybinds for copying and pasting
bind -T copy-mode-vi p paste-buffer
bind -T copy-mode-vi V send-keys -X rectangle-toggle # Check if this works
bind -T copy-mode-vi v send-keys -X begin-selection
bind -T copy-mode-vi y send-keys -X copy-selection

# Pane navigation with vim support
# cmd="$(tmux display -p '#{pane_current_command}')"
# cmd="$(basename "$cmd" | tr A-Z a-z)"
# pane_count="$(tmux list-panes | wc -l)"
#
# if [ "${cmd%m}" = "vi" ] || [ "$pane_count" -eq 1 ]; then
#   direction="$(echo "${1#-}" | tr 'lLDUR' '\\hjkl')"
#   # forward the keystroke to Vim
#   tmux send-keys "C-$direction"
# else
#   tmux select-pane "$@"
# fi

# 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 "$is_vim" 'send-keys C-l'  'select-pane -R'
tmux_version='$(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 \"$is_vim\" 'send-keys C-\\'  'select-pane -l'"
if-shell -b '[ "$(echo "$tmux_version >= 3.0" | bc)" = 1 ]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim\" '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

# Copy to clipboard using fastcopy
# set-option -g set-clipboard on
# set-option -g @fastcopy-action 'tmux load-buffer -w -'
# set-option -g @fastcopy-key a

# Keep state around using resurrect
set -g @resurrect-processes '"~python3"'