From b128426804cc3b6f4243eab2651f6ad79519e5b1 Mon Sep 17 00:00:00 2001
From: Yasuhiro Matsumoto <mattn.jp@gmail.com>
Date: Fri, 27 Sep 2013 12:35:03 +1000
Subject: [PATCH] misc/vim: godoc is optional. so should point installation
 instruction.

R=golang-dev, r, dsymonds
CC=golang-dev
https://golang.org/cl/14017043
---
 misc/vim/plugin/godoc.vim | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/misc/vim/plugin/godoc.vim b/misc/vim/plugin/godoc.vim
index 47ba9e08f0..33c9ec05bf 100644
--- a/misc/vim/plugin/godoc.vim
+++ b/misc/vim/plugin/godoc.vim
@@ -66,6 +66,13 @@ function! s:GodocView()
 endfunction
 
 function! s:GodocWord(word)
+  if !executable('godoc')
+    echohl WarningMsg
+    echo "godoc command not found."
+    echo "  install with: go get code.google.com/p/go.tools/cmd/godoc"
+    echohl None
+    return
+  endif
   let word = a:word
   silent! let content = system('godoc ' . word)
   if v:shell_error || !len(content)