feat(tmux): allow all standard config files (#11103)

plugins/tmux/README.md

@@ -29,7 +29,7 @@ The plugin also supports the following:
 ## Configuration Variables
 
 | Variable                            | Description                                                                                 |
-| ----------------------------------- | ----------------------------------------------------------------------------- |
+| ----------------------------------- | ------------------------------------------------------------------------------------------- |
 | `ZSH_TMUX_AUTOSTART`                | Automatically starts tmux (default: `false`)                                                |
 | `ZSH_TMUX_AUTOSTART_ONCE`           | Autostart only if tmux hasn't been started previously (default: `true`)                     |
 | `ZSH_TMUX_AUTOCONNECT`              | Automatically connect to a previous session if it exits (default: `true`)                   |
@@ -38,6 +38,6 @@ The plugin also supports the following:
 | `ZSH_TMUX_ITERM2`                   | Sets the `-CC` option for iTerm2 tmux integration (default: `false`)                        |
 | `ZSH_TMUX_FIXTERM_WITHOUT_256COLOR` | `$TERM` to use for non 256-color terminals (default: `screen`)                              |
 | `ZSH_TMUX_FIXTERM_WITH_256COLOR`    | `$TERM` to use for 256-color terminals (default: `screen-256color`                          |
-| `ZSH_TMUX_CONFIG`                   | Set the configuration path (default: `$HOME/.tmux.conf`)                      |
+| `ZSH_TMUX_CONFIG`                   | Set the configuration path (default: `$HOME/.tmux.conf`, `$XDG_CONFIG_HOME/tmux/tmux.conf`) |
 | `ZSH_TMUX_UNICODE`                  | Set `tmux -u` option to support unicode                                                     |
 | `ZSH_TMUX_DEFAULT_SESSION_NAME`     | Set tmux default session name when autostart is enabled                                     |

plugins/tmux/tmux.plugin.zsh

@@ -26,12 +26,17 @@ fi
 # systems without the proper terminfo
 : ${ZSH_TMUX_FIXTERM_WITH_256COLOR:=screen-256color}
 # Set the configuration path
-: ${ZSH_TMUX_CONFIG:=$HOME/.tmux.conf}
+if [[ -e $HOME/.tmux.conf ]]; then
+  : ${ZSH_TMUX_CONFIG:=$HOME/.tmux.conf}
+elif [[ -e ${XDG_CONFIG_HOME:-$HOME/.config}/tmux/tmux.conf ]]; then
+  : ${ZSH_TMUX_CONFIG:=${XDG_CONFIG_HOME:-$HOME/.config}/tmux/tmux.conf}
+else
+  : ${ZSH_TMUX_CONFIG:=$HOME/.tmux.conf}
+fi
 # Set -u option to support unicode
 : ${ZSH_TMUX_UNICODE:=false}
 
 # ALIASES
-
 alias ta='tmux attach -t'
 alias tad='tmux attach -d -t'
 alias ts='tmux new-session -s'