set syntax for doc window

Author: dstahlke

ftplugin/python/ipy.vim

@@ -196,6 +196,10 @@ def get_doc_buffer(level=0):
     #vim.command('pcl')
     #vim.command('pedit doc')
     #vim.command('normal ') # go to previous window
+    # "rest" is the syntax of python documentation.  Stock vim doesn't have
+    # a syntax file for rest, but if the user has installed one then this will
+    # cause the docs to be colorized.
+    vim.command('setlocal syntax=rest')
 
 def update_subchannel_msgs(debug=False):
     msgs = km.sub_channel.get_msgs()