.tmux.conf

#################
#  TMUX CONFIG  #
#################

# set prefix
unbind-key           C-b
set-option -g prefix C-b
bind-key             C-b send-prefix


#############
#  OPTIONS  #
#############

# use vi keys
set-option -gw mode-keys vi

# set bigger history limit
set-option -g history-limit 1000000

# so you don't end up with window numbers like: 0 1 4 5 6
set-option -g renumber-windows on

# mouse support
set-option -g mouse on

# set title
set-option -g set-titles        on
set-option -g set-titles-string "tmux [#S]"

# 256 color support
set-option -g  default-terminal   'tmux-256color'
set-option -g  default-terminal   "${TERM}"
set-option -ga terminal-overrides ',xterm-termite:Tc,xterm-kitty:Tc,alacritty:Tc,xterm-256color:Tc'
set-option -ga terminal-overrides ',*:Smulx=\E[4::%p1%dm'
set-option -ga terminal-overrides ',*:Setulc=\E[58::2::%p1%{65536}%/%d::%p1%{256}%/%{255}%&%d::%p1%{255}%&%d%;m'

# style of function key sequences
set-window-option -g xterm-keys on

# start window numbers from 1
set-option -g base-index 1

# set escape time so vim is responsive inside tmux
set-option -g escape-time 1

# show statusbar
set-option -g status on

# status bar redraw interval
set-option -g status-interval 5

# status position
set-option -g status-position bottom

# wrap search
set-option -g wrap-search on

# repeat time
set-option -g repeat-time 700


##############
#  BINDINGS  #
##############

# reload tmux config
bind-key r source-file ~/.tmux.conf \; display-message "Reloaded ~/.tmux.conf"

# source .tmux file
bind-key T confirm-before -p "Source .tmux file? (y/N)" "source-file .tmux"

# kill session / window / panel
bind-key S confirm-before -p "Kill session '#S'? (y/N)" kill-session
bind-key W confirm-before -p "Kill window '#W'? (y/N)"  kill-window
bind-key P confirm-before -p "Kill pane '#T'? (y/N)"    kill-pane

# rename session / window / panel
bind-key M-S command-prompt -p "Rename session:" -I '#S' 'rename-session %1'
bind-key M-W command-prompt -p "Rename window:"  -I '#W' 'rename-window %1'
bind-key M-P command-prompt -p "Rename pane:"    -I '#T' 'rename-pane %1'
bind-key   $ command-prompt -p "Rename session:" -I '#S' 'rename-session %1'
bind-key   , command-prompt -p "Rename window:"  -I '#W' 'rename-window %1'

# create new panes and windows
bind-key C-v split-window -h -c "#{pane_current_path}"
bind-key   v split-window -h
bind-key C-x split-window -v -c "#{pane_current_path}"
bind-key   x split-window -v
bind-key C-c new-window   -a -c "#{pane_current_path}"
bind-key   c new-window

# create small horizontal pane
bind-key C-u split-window -v -l 3 -c "#{pane_current_path}"

# smart pane switching with awareness of vim splits
# makes ctrl-j and ctrl-k navigate fzf search results when fzf active in pane
# providing the same behavior as ctrl-j and ctrl-k when navigating ctrl-p
# results inside vim.

IS_VIM="ps -o state= -o comm= -t '#{pane_tty}' | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
IS_FZF="ps -o state= -o comm= -t '#{pane_tty}' | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?fzf$'"

# switch panes
bind-key -n C-h                   if-shell "${IS_VIM} || ${IS_FZF}" "send-keys C-h" "select-pane -L"
bind-key -n C-j                   if-shell "${IS_VIM} || ${IS_FZF}" "send-keys C-j" "select-pane -D"
bind-key -n C-k                   if-shell "${IS_VIM} || ${IS_FZF}" "send-keys C-k" "select-pane -U"
bind-key -n C-l                   if-shell "${IS_VIM} || ${IS_FZF}" "send-keys C-l" "select-pane -R"

# switch panes (copy-mode)
bind-key -T copy-mode-vi C-h      if-shell "${IS_VIM} || ${IS_FZF}" "send-keys C-h" "select-pane -L"
bind-key -T copy-mode-vi C-j      if-shell "${IS_VIM} || ${IS_FZF}" "send-keys C-j" "select-pane -D"
bind-key -T copy-mode-vi C-k      if-shell "${IS_VIM} || ${IS_FZF}" "send-keys C-k" "select-pane -U"
bind-key -T copy-mode-vi C-l      if-shell "${IS_VIM} || ${IS_FZF}" "send-keys C-l" "select-pane -R"
bind-key -T copy-mode    C-h      if-shell "${IS_VIM} || ${IS_FZF}" "send-keys C-h" "select-pane -L"
bind-key -T copy-mode    C-j      if-shell "${IS_VIM} || ${IS_FZF}" "send-keys C-j" "select-pane -D"
bind-key -T copy-mode    C-k      if-shell "${IS_VIM} || ${IS_FZF}" "send-keys C-k" "select-pane -U"
bind-key -T copy-mode    C-l      if-shell "${IS_VIM} || ${IS_FZF}" "send-keys C-l" "select-pane -R"

# fallback
bind-key C-h select-pane -L
bind-key C-j select-pane -D
bind-key C-k select-pane -U
bind-key C-l select-pane -R

# resize panes
bind-key -r h resize-pane -L 5
bind-key -r j resize-pane -D 5
bind-key -r k resize-pane -U 5
bind-key -r l resize-pane -R 5

# spread panes out evenly
bind-key C-e select-layout -E

# select pane
bind-key C-m select-pane -m
bind-key   m select-pane -M

# change split direction
bind-key V move-pane -h -t '.-'
bind-key X move-pane -v -t '.-'

# join panes
bind-key M-v join-pane -h
bind-key M-x join-pane -v

# rotate panes
bind-key C-r rotate-window

# swap panes
bind-key -r H swap-pane -U
bind-key -r L swap-pane -D

# swap windows
bind-key -r M-h swap-window -s -1 \; previous-window
bind-key -r M-l swap-window -s +1 \; next-window
bind-key -r <   swap-window -s -1 \; previous-window
bind-key -r >   swap-window -s +1 \; next-window

# swap marked
bind-key M-p swap-pane   \; select-pane -M
bind-key M-w swap-window \; select-pane -M

# switch windows
bind-key -n M-h previous-window
bind-key -n M-l next-window

# switch session
bind-key C-n switch-client -n
bind-key C-p switch-client -p

# move window
bind-key M-m command-prompt -p 'Move window to here:' -I '#S:#I' 'move-window -s %1'
bind-key   M command-prompt -p 'Move this window to:' -I '#S:#I' 'move-window -t %1'

# link / unlink window
bind-key M-b command-prompt -p 'Link window:' -I '#S:#I' 'if-shell -F "%1" "link-window -s %1" "unlink-window"'
bind-key   B unlink-window

# save buffer to file
bind-key M-s command-prompt -p 'Save history to filename:' -I '~/.tmux_history' 'capture-pane -S - -E - ; save-buffer %1 ; delete-buffer'

# display panes
bind-key C-d display-panes

# toggle status bar
bind-key C-s set-option status

# toggle pane border status
bind-key C-t set-option -g pane-border-status

# toggle synchronize
bind-key ^ set-window-option synchronize-panes


###############
#  COPY MODE  #
###############

# set clipboard
set-option -g set-clipboard external

# copy and paste
bind-key C-y copy-mode
bind-key   y copy-mode
bind-key   p paste-buffer

# copy mode bindings
bind-key -T copy-mode-vi v                 send-keys -X begin-selection
bind-key -T copy-mode-vi C-v               send-keys -X rectangle-toggle
bind-key -T copy-mode-vi Space             send-keys -X clear-selection
bind-key -T copy-mode-vi d                 send-keys -X halfpage-down
bind-key -T copy-mode-vi u                 send-keys -X halfpage-up
bind-key -T copy-mode-vi y                 send-keys -X copy-pipe-no-clear   'xclip -in -selection clipboard'
bind-key -T copy-mode-vi Enter             send-keys -X copy-pipe-and-cancel 'xclip -in -selection clipboard'
bind-key -T copy-mode-vi MouseDragEnd1Pane send-keys -X copy-pipe-no-clear   'xclip -in -selection primary'
bind-key -T copy-mode-vi q                 send-keys -X cancel
bind-key -T copy-mode-vi ä                 send-keys -X back-to-indentation
bind-key -T copy-mode-vi /                 command-prompt -p '/'              'send-keys -X search-backward %1'
bind-key -T copy-mode-vi ?                 command-prompt -p '?'              'send-keys -X search-forward %1'
bind-key -T copy-mode-vi Escape            if-shell -F '#{selection_present}' 'send-keys -X clear-selection' 'send-keys -X cancel'

# scroll speed
bind-key -T copy-mode-vi WheelUpPane   send-keys -N 1 -X scroll-up
bind-key -T copy-mode-vi WheelDownPane send-keys -N 1 -X scroll-down
bind-key -T copy-mode    WheelUpPane   send-keys -N 1 -X scroll-up
bind-key -T copy-mode    WheelDownPane send-keys -N 1 -X scroll-down


####################
#  MOUSE BINDINGS  #
####################

bind-key -n DoubleClick1StatusLeft switch-client -n


###################
#  MISC BINDINGS  #
###################

# open git log (or dotfiles log if not available)
bind-key C-g split-window -h -f -d -c "#{pane_current_path}" "git lg || ([[ $? -ne 141 ]] && dotfiles lg)"
bind-key   g respawn-pane -t "{right}" -k "git lg || ([[ $? -ne 141 ]] && dotfiles lg)"
bind-key C-o split-window -h -f -d -c "#{pane_current_path}" "git lgo || ([[ $? -ne 141 ]] && dotfiles lgo)"
bind-key   o respawn-pane -t "{right}" -k "git lgo || ([[ $? -ne 141 ]] && dotfiles lgo)"
bind-key C-q kill-pane    -t "{right}"


###############
#  STATUSBAR  #
###############

# Use minimal statusbar if in TTY, otherwise use powerline statusbar
if-shell -F "#{==:${TERM},linux}" \
    "source-file ~/.config/tmux/tty-status.conf" \
    "source-file ~/.config/tmux/minimal-status.conf"


#############
#  PLUGINS  #
#############

set-option -g @plugin 'tmux-plugins/tpm'
set-option -g @plugin 'tmux-plugins/tmux-sensible'
#set-option -g @plugin 'tmux-plugins/tmux-resurrect'
#set-option -g @plugin 'tmux-plugins/tmux-continuum'
#set-option -g @plugin 'tmux-plugins/tmux-copycat'
#set-option -g @plugin 'tmux-plugins/tmux-yank'
set-option -g @plugin 'NHDaly/tmux-better-mouse-mode'
set-option -g @plugin 'tmux-plugins/vim-tmux-focus-events'

# plugin settings
#set-option -g @continuum-boot                               'on'
#set-option -g @continuum-systemd-start-cmd                  'new-session -d -s main'
#set-option -g @resurrect-strategy-vim                       'session'

set-option -g @scroll-down-exit-copy-mode                   'on'
set-option -g @scroll-without-changing-pane                 'on'
set-option -g @scroll-in-moused-over-pane                   'on'
set-option -g @scroll-speed-num-lines-per-scroll            '1'
set-option -g @emulate-scroll-for-no-mouse-alternate-buffer 'on'

# initialize tpm (keep this line at the very bottom of .tmux.conf)
run-shell '~/.tmux/plugins/tpm/tpm'