runtime/syntax/tmux.vim

" Language: tmux(1) configuration file
" Version: 2.7 (git-e4e060f2)
" URL: https://github.com/ericpruitt/tmux.vim/
" Maintainer: Eric Pruitt <eric.pruitt@gmail.com>
" License: 2-Clause BSD (http://opensource.org/licenses/BSD-2-Clause)

if exists("b:current_syntax")
    finish
endif

" Explicitly change compatiblity options to Vim's defaults because this file
" uses line continuations.
let s:original_cpo = &cpo
set cpo&vim

let b:current_syntax = "tmux"
syntax iskeyword @,48-57,_,192-255,-
syntax case match

syn keyword tmuxAction  none any current other
syn keyword tmuxBoolean off on

syn keyword tmuxTodo FIXME NOTE TODO XXX contained

syn match tmuxColour            /\<colour[0-9]\+/      display
syn match tmuxKey               /\(C-\|M-\|\^\)\+\S\+/ display
syn match tmuxNumber            /\<\d\+\>/             display
syn match tmuxFlags             /\s-\a\+/              display
syn match tmuxVariable          /\w\+=/                display
syn match tmuxVariableExpansion /\${\=\w\+}\=/         display

syn region tmuxComment start=/#/ skip=/\\\@<!\\$/ end=/$/ contains=tmuxTodo

syn region tmuxString start=+"+ skip=+\\\\\|\\"\|\\$+ excludenl end=+"+ end='$' contains=tmuxFormatString
syn region tmuxString start=+'+ skip=+\\\\\|\\'\|\\$+ excludenl end=+'+ end='$' contains=tmuxFormatString

" TODO: Figure out how escaping works inside of #(...) and #{...} blocks.
syn region tmuxFormatString start=/#[#DFhHIPSTW]/ end=// contained keepend
syn region tmuxFormatString start=/#{/ skip=/#{.\{-}}/ end=/}/ contained keepend
syn region tmuxFormatString start=/#(/ skip=/#(.\{-})/ end=/)/ contained keepend

hi def link tmuxFormatString      Identifier
hi def link tmuxAction            Boolean
hi def link tmuxBoolean           Boolean
hi def link tmuxCommands          Keyword
hi def link tmuxComment           Comment
hi def link tmuxKey               Special
hi def link tmuxNumber            Number
hi def link tmuxFlags             Identifier
hi def link tmuxOptions           Function
hi def link tmuxString            String
hi def link tmuxTodo              Todo
hi def link tmuxVariable          Identifier
hi def link tmuxVariableExpansion Identifier

" Make the foreground of colourXXX keywords match the color they represent.
" Darker colors have their background set to white.
for s:i in range(0, 255)
    let s:bg = (!s:i || s:i == 16 || (s:i > 231 && s:i < 235)) ? 15 : "none"
    exec "syn match tmuxColour" . s:i . " /\\<colour" . s:i . "\\>/ display"
\     " | highlight tmuxColour" . s:i . " ctermfg=" . s:i . " ctermbg=" . s:bg
endfor

syn keyword tmuxOptions
\ buffer-limit command-alias default-terminal escape-time exit-empty
\ activity-action assume-paste-time base-index bell-action default-command
\ default-shell destroy-unattached detach-on-destroy
\ display-panes-active-colour display-panes-colour display-panes-time
\ display-time exit-unattached focus-events history-file history-limit
\ key-table lock-after-time lock-command message-attr message-bg
\ message-command-attr message-command-bg message-command-fg
\ message-command-style message-fg message-limit message-style mouse
\ aggressive-resize allow-rename alternate-screen automatic-rename
\ automatic-rename-format clock-mode-colour clock-mode-style force-height
\ force-width main-pane-height main-pane-width mode-attr mode-bg mode-fg
\ mode-keys mode-style monitor-activity monitor-bell monitor-silence
\ other-pane-height other-pane-width pane-active-border-bg
\ pane-active-border-fg pane-active-border-style pane-base-index
\ pane-border-bg pane-border-fg pane-border-format pane-border-status
\ pane-border-style prefix prefix2 remain-on-exit renumber-windows
\ repeat-time set-clipboard set-titles set-titles-string silence-action
\ status status-attr status-bg status-fg status-interval status-justify
\ status-keys status-left status-left-attr status-left-bg status-left-fg
\ status-left-length status-left-style status-position status-right
\ status-right-attr status-right-bg status-right-fg status-right-length
\ status-right-style status-style synchronize-panes terminal-overrides
\ update-environment user-keys visual-activity visual-bell visual-silence
\ window-active-style window-status-activity-attr window-status-activity-bg
\ window-status-activity-fg window-status-activity-style window-status-attr
\ window-status-bell-attr window-status-bell-bg window-status-bell-fg
\ window-status-bell-style window-status-bg window-status-current-attr
\ window-status-current-bg window-status-current-fg
\ window-status-current-format window-status-current-style window-status-fg
\ window-status-format window-status-last-attr window-status-last-bg
\ window-status-last-fg window-status-last-style window-status-separator
\ window-status-style window-style word-separators wrap-search xterm-keys

syn keyword tmuxCommands
\ attach attach-session bind bind-key break-pane breakp capture-pane
\ capturep choose-buffer choose-client choose-tree clear-history clearhist
\ clock-mode command-prompt confirm confirm-before copy-mode detach
\ detach-client display display-message display-panes displayp find-window
\ findw if if-shell join-pane joinp kill-pane kill-server kill-session
\ kill-window killp has-session has killw link-window linkw list-buffers
\ list-clients list-commands list-keys list-panes list-sessions list-windows
\ load-buffer loadb lock lock-client lock-server lock-session last-pane
\ lastp lockc locks last-window last ls lsb delete-buffer deleteb lsc lscm
\ lsk lsp lsw move-pane move-window movep movew new new-session new-window
\ neww next next-layout next-window nextl paste-buffer pasteb pipe-pane
\ pipep prev previous-layout previous-window prevl refresh refresh-client
\ rename rename-session rename-window renamew resize-pane resizep
\ respawn-pane respawn-window respawnp respawnw rotate-window rotatew run
\ run-shell save-buffer saveb select-layout select-pane select-window
\ selectl selectp selectw send send-keys send-prefix set set-buffer
\ set-environment set-hook set-option set-window-option setb setenv setw
\ show show-buffer show-environment show-hooks show-messages show-options
\ show-window-options showb showenv showmsgs showw source source-file
\ split-window splitw start start-server suspend-client suspendc swap-pane
\ swap-window swapp swapw switch-client switchc unbind unbind-key
\ unlink-window unlinkw wait wait-for

let &cpo = s:original_cpo
unlet! s:original_cpo s:bg s:i