.tmux.conf

# https://github.com/orgs/tmux-plugins/repositories?type=all
set -g @plugin 'tmux-plugins/tpm'
# handles `reattach-to-user-namespace`
set -g @plugin 'tmux-plugins/tmux-sensible'
# prefix-F to view keybindings and commands in fzf
set -g @plugin 'sainnhe/tmux-fzf'
# o to open selection in macos
set -g @plugin 'tmux-plugins/tmux-open'
# prefix-u urlview
set -g @plugin 'tmux-plugins/tmux-urlview'
# TODO need status bar for this to be useful
# set -g @plugin 'tmux-plugins/tmux-prefix-highlight'
# prefix-y to copy, prefix-shift-y to copy and paste
set -g @plugin 'tmux-plugins/tmux-yank'
# prefix-/ and prefix-f for pre-built file search
set -g @plugin 'tmux-plugins/tmux-copycat'
# https://github.com/jabirali/tmux-tilish
# TODO is this one better? https://github.com/noscript/tmux-mighty-scroll
set -g @plugin 'nhdaly/tmux-better-mouse-mode'
# prefix-f
set -g @plugin 'abhinav/tmux-fastcopy'
# prefix-tab to extract text from pane
# TODO custom extraction patterns https://github.com/laktak/extrakto#custom-filters
set -g @plugin 'laktak/extrakto'
set -g @plugin 'akohlbecker/aw-watcher-tmux'
# TODO https://github.com/tmux-plugins/tmux-fpp/blob/master/fpp.tmux

# remap prefix to C-h. Some people use C-a, but that conflicts with beginning of line for me. C-b is just annoying.
unbind C-b
set-option -g prefix C-h
bind-key C-h send-prefix

# Enter copy mode with prefix-k, much easier
unbind [
bind-key k copy-mode

# enter copy mode without a prefix!
bind -n C-M-k copy-mode

# other search patterns: C-f for files, C-u for urls
# TODO some broken aspects of this plugin https://github.com/tmux-plugins/tmux-copycat/issues/57#issuecomment-1556043057
# other ideas: https://github.com/tmux-plugins/tmux-copycat/issues/57
# this search below allows for more strict file matching
set -g @copycat_search_C-f '[a-zA-Z0-9_./-]+$'

# push fastcopy into macos clipboard
set-option -g @fastcopy-action pbcopy

# easy reload: prefix+r
# https://til.hashrocket.com/posts/d4d3c1fea6-quickly-edit-and-reload-tmux-configuration
bind-key r source-file ~/.tmux.conf \; display-message "~/.tmux.conf reloaded"

# https://unix.stackexchange.com/questions/665657/tmux-copy-and-paste-not-working
setw -g mode-keys vi
bind-key    -T copy-mode-vi    C-a              send-keys -X start-of-line
bind-key    -T copy-mode-vi    C-e              send-keys -X end-of-line

# prefix-C to clear the terminal
# https://stackoverflow.com/questions/10543684/how-do-i-clear-the-scrollback-buffer-in-tmux
# TODO can we hook into cmd+k with zsh? https://unix.stackexchange.com/questions/527344/how-to-clear-tmux-and-zsh-history-with-one-keypress
bind-key C send-keys "clear" \; send-keys "Enter" \; clear-history

set -g mouse on

# I'm very nitpicky about the mouse configuration and I've manually configured it below
set -g @yank_with_mouse off

# I don't like the status bar taking up screen real estate
set -g status off

# makes scrolling seem more macos-like
set -g @scroll-speed-num-lines-per-scroll 3
# allows less and other pagers to use the scroll wheel!
set -g @emulate-scroll-for-no-mouse-alternate-buffer on

# expand tmux-fzf plugin to full screen
TMUX_FZF_OPTIONS="-p -w 100% -h 100% -m"

# make colors inside tmux look the same as outside of tmux
# https://unix.stackexchange.com/questions/348771/why-do-vim-colors-look-different-inside-and-outside-of-tmux
set -g default-terminal "xterm-256color"
set-option -ga terminal-overrides ",xterm-256color:Tc"

# easily jump to prompt starts
# https://unix.stackexchange.com/questions/226731/jump-to-last-prompt-in-terminal-or-tmux
bind-key -T copy-mode-vi b {
  send-keys -X start-of-line
  send-keys -X search-backward "❯"
}

###########################
# less-style page up/down
###########################

# this is how `less` does it, and it feels nice
bind-key -T copy-mode-vi u send-keys -X page-up
bind-key -T copy-mode-vi d send-keys -X page-down

###########################
# option-{Arrow} word navigation
###########################

bind-key -T copy-mode-vi M-f send-keys -X next-word
bind-key -T copy-mode-vi M-b send-keys -X previous-word

###########################
# allow Shift-{Arrows} to be used to start selection AND mutate selection, like macos
###########################

bind-key -T copy-mode-vi 'S-Down' {
  if-shell -F '#{selection_present}' {
    send-keys -X cursor-down
  } {
    send-keys -X begin-selection
    send-keys -X cursor-down
  }
}

bind-key -T copy-mode-vi 'S-Up' {
  if-shell -F '#{selection_present}' {
    send-keys -X cursor-up
  } {
    send-keys -X begin-selection
    send-keys -X cursor-up
  }
}

bind-key -T copy-mode-vi 'S-Right' {
  if-shell -F '#{selection_present}' {
    send-keys -X cursor-right
  } {
    send-keys -X begin-selection
    send-keys -X cursor-right
  }
}

bind-key -T copy-mode-vi 'S-Left' {
  if-shell -F '#{selection_present}' {
    send-keys -X cursor-left
  } {
    send-keys -X begin-selection
    send-keys -X cursor-left
  }
}

bind-key -T copy-mode-vi S-M-Left {
  if-shell -F '#{selection_present}' {
    send-keys -X previous-word
  } {
    send-keys -X begin-selection
    send-keys -X previous-word
  }
}

bind-key -T copy-mode-vi S-M-Right  {
  if-shell -F '#{selection_present}' {
    send-keys -X next-word
  } {
    send-keys -X begin-selection
    send-keys -X next-word
  }
}

run -b '~/.tmux/plugins/tpm/tpm'

# TODO never got this working, some bug in the macos integration
# set-option -g @plugin 'b0o/tmux-autoreload'

###########################
# macos-style mouse selection
# must run after tpm
###########################

# don't cancel selection when double click ends
# works in copy mode too
bind-key -n DoubleClick1Pane {
  select-pane
  copy-mode -M
  send-keys -X select-word
}

# once we are in copy mode, single click to start new selection
bind -T copy-mode-vi MouseDown1Pane {
  select-pane
  send-keys -X clear-selection
}

# do not cancel selection when dragging ends
unbind -T copy-mode-vi MouseDragEnd1Pane
unbind -T copy-mode MouseDragEnd1Pane
unbind -T copy-mode-vi DoubleClick1Pane
unbind -T copy-mode DoubleClick1Pane

# this is at the bottom because it messes with syntax highlighting
# align word separators with a more standard terminal
# https://github.com/tmux/tmux/issues/3528
set-option -g word-separators " ()[]{}',:;\""