Enable iTerm2 tmux integration

Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>

modules/tmux/README.md

@@ -30,6 +30,15 @@ in *tmux.conf*:
 
     set-option -g destroy-unattached [on | off]
 
+#### iTerm2 Integration
+
+[iTerm2][6] offers significant integration with tmux. This can be enabled by
+adding the following line to *zpreztorc*:
+
+    zstyle ':prezto:module:tmux:iterm' integrate 'yes'
+
+Read [iTerm2 and tmux Integration][7] for more information.
+
 Aliases
 -------
 
@@ -64,3 +73,5 @@ Authors
 [3]: https://github.com/ChrisJohnsen/tmux-MacOSX-pasteboard
 [4]: https://github.com/mxcl/homebrew
 [5]: https://github.com/sorin-ionescu/prezto/issues
+[6]: http://iterm2.com
+[7]: https://code.google.com/p/iterm2/wiki/TmuxIntegration

modules/tmux/init.zsh

@@ -17,6 +17,12 @@ fi
 # Auto Start
 #
 
+if ([[ "$TERM_PROGRAM" = 'iTerm.app' ]] && \
+  zstyle -t ':prezto:module:tmux:iterm' integrate \
+); then
+  _tmux_iterm_integration='-CC'
+fi
+
 if [[ -z "$TMUX" && -z "$EMACS" && -z "$VIM" ]] && ( \
   ( [[ -n "$SSH_TTY" ]] && zstyle -t ':prezto:module:tmux:auto-start' remote ) ||
   ( [[ -z "$SSH_TTY" ]] && zstyle -t ':prezto:module:tmux:auto-start' local ) \
@@ -32,12 +38,12 @@ if [[ -z "$TMUX" && -z "$EMACS" && -z "$VIM" ]] && ( \
   fi
 
   # Attach to the 'prezto' session or to the last session used.
-  exec tmux attach-session
+  exec tmux "$_tmux_iterm_integration" attach-session
 fi
 
 #
 # Aliases
 #
 
-alias tmuxa='tmux attach-session'
+alias tmuxa="tmux $_tmux_iterm_integration attach-session"
 alias tmuxl='tmux list-sessions'

runcoms/zpreztorc

@@ -152,3 +152,6 @@ zstyle ':prezto:module:prompt' theme 'sorin'
 
 # Auto start a session when Zsh is launched in a SSH connection.
 # zstyle ':prezto:module:tmux:auto-start' remote 'yes'
+
+# Integrate with iTerm2.
+# zstyle ':prezto:module:tmux:iterm' integrate 'yes'