From e726ccb5eac47b3c3a141b9314f619b9f87a5149 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 6 Aug 2014 14:00:31 +0530
Subject: [PATCH] ...

---
 src/calibre/linux.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/calibre/linux.py b/src/calibre/linux.py
index b06b467235..4e66676546 100644
--- a/src/calibre/linux.py
+++ b/src/calibre/linux.py
@@ -236,8 +236,8 @@ class ZshCompleter(object):  # {{{
                       opf_opts=('--opf',), file_map={}):
         if not self.dest:
             return
-        exts = sorted(set(exts))
-        extra = ('''"*:filename:_files -g '(#i)*.(%s)" ''' % '|'.join(exts),)
+        exts = sorted({x.lower() for x in exts})
+        extra = ('''"*:filename:_files -g '(#i)*.(%s)'" ''' % '|'.join(exts),)
         opts = '\\\n  '.join(tuple(self.get_options(
             op(), cover_opts=cover_opts, opf_opts=opf_opts, file_map=file_map)) + extra)
         txt = '_arguments -s \\\n  ' + opts