Add the ability to specify tmux session name

modules/tmux/README.md

@@ -23,6 +23,10 @@ following line to *zpreztorc*:
 In both cases, it will create a background session named _prezto_ if the tmux
 server is not started.
 
+You can change the default session name with:
+
+    zstyle ':prezto:module:tmux' session 'YOUR DEFAULT SESSION NAME'
+
 With `auto-start` enabled, you may want to control how multiple sessions are
 managed. The `destroy-unattached` option of tmux controls if the unattached
 sessions must be kept alive, making sessions available for later use, configured

modules/tmux/init.zsh

@@ -31,7 +31,7 @@ if [[ -z "$TMUX" && -z "$EMACS" && -z "$VIM" ]] && ( \
 
   # Create a 'prezto' session if no session has been defined in tmux.conf.
   if ! tmux has-session 2> /dev/null; then
-    tmux_session='prezto'
+    zstyle -s ':prezto:module:tmux' tmux_session 'session' || tmux_session='prezto'
     tmux \
       new-session -d -s "$tmux_session" \; \
       set-option -t "$tmux_session" destroy-unattached off &> /dev/null

runcoms/zpreztorc

@@ -176,3 +176,6 @@ zstyle ':prezto:module:prompt' theme 'sorin'
 
 # Integrate with iTerm2.
 # zstyle ':prezto:module:tmux:iterm' integrate 'yes'
+
+# Set the default session name:
+# zstyle ':prezto:module:tmux' session 'YOUR DEFAULT SESSION NAME'