Added optional Pre callout and better Pre callout and Post callout functions

zsh_custom/plugins/vim-interaction/README.md

@@ -25,19 +25,31 @@ There are a few aliases presented as well:
 * `vvsp` Edits the passed in file but first makes a vertical split
 * `vhsp` Edits the passed in file but first makes a horizontal split
 
+## Pre Callout ##
+
+At the start of the `callvim` function we invoke the `preCallVim` function if it
+exists. You could define a function that starts GVim/MacVim if not started yet
+
+    function preCallVim
+    {
+        PID=`ps -A | grep gvim`
+        if [ -z $PID ]; then
+            gvim
+            # wait until gvim starts so --remote-send works
+            while [ -z "`ps -A | grep gvim`" ]; do; done;
+        fi
+    }
+
 ## Post Callout ##
 
 At the end of the `callvim` function we invoke the `postCallVim` function if it
-exists.  If you're using MacVim, for example, you could define a function that
-brings window focus to it after the file is loaded:
+exists. You could define a function that brings window focus after the file is loaded:
 
     function postCallVim
     {
-      osascript -e 'tell application "MacVim" to activate'
+        gvim --remote-send ":call foreground()<CR>"
     }
 
-This'll be different depending on your OS / Window Manager.
-
 ## Examples ##
 
 This will load `/tmp/myfile.scala` into the running GVim session:

zsh_custom/plugins/vim-interaction/vim-interaction.plugin.zsh

@@ -28,7 +28,9 @@ usage: callvim [-b cmd] [-a cmd] [file ... fileN]
 EOH
     return 0
   fi
-
+  if typeset -f preCallVim > /dev/null; then
+    preCallVim
+  fi
   local cmd=""
   local toNormal="<c-\\><c-n>"
   local before=""