patch for completion of ctags tags

patch for completion of ctags tags

[Pavol Juhas]

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Hello,

I have recently found that completion of tag labels after "vim -t <Tab>"
works on Linuxes, but not on the MacOSX.
I have tracked this down to the _complete_tag function, which assumes
ctags file format when the tags file is named "tags" and emacs-tags format
when "TAGS".  However, filesystem is not case-sensitive on MacOSX and
as a result, the tags file would be always detected in the emacs format.

The attached patch against the zsh-users github repository should fix
that by checking the first line in the tags file.

Hope this helps,

Pavol

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From 8c5032d28cb6067eee3211acf736d5348731c03e Mon Sep 17 00:00:00 2001
From: Pavol Juhas <pavol.juhas@gmail.com>
Date: Thu, 14 Mar 2013 14:04:52 -0400
Subject: [PATCH] On case insesitive file-systems look at the first line of the
 tags file to decide if it is in ctags or etags format.

---
 Completion/Base/Widget/_complete_tag | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Completion/Base/Widget/_complete_tag b/Completion/Base/Widget/_complete_tag
index 5a26c38..5b50f1d 100644
--- a/Completion/Base/Widget/_complete_tag
+++ b/Completion/Base/Widget/_complete_tag
@@ -32,6 +32,11 @@ while [[ ! -f $c_path$c_Tagsfile &&
   c_path=../$c_path
 done
 
+if [[ -f $c_path$c_Tagsfile && $c_path$c_Tagsfile -ef $c_path$c_tagsfile &&
+      "$(head -1 $c_path$c_tagsfile)" == '!_TAG_'* ]]; then
+        c_Tagsfile=
+fi
+
 if [[ -f $c_path$c_Tagsfile ]]; then
   # prefer the more comprehensive TAGS, which unfortunately is a
   # little harder to parse.
-- 
1.8.1.3