From eac1271ae9dc6087be4383ded3f62ac3da030b54 Mon Sep 17 00:00:00 2001
From: Artur Malabarba <bruce.connor.am@gmail.com>
Date: Sun, 28 Jun 2015 09:20:47 +0100
Subject: [PATCH] * lisp/isearch.el (isearch-mode): Don't char-fold regexps

(bug#20913)
---
 lisp/isearch.el | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lisp/isearch.el b/lisp/isearch.el
index 9ecbbdf11ed..45c6d97dd36 100644
--- a/lisp/isearch.el
+++ b/lisp/isearch.el
@@ -863,6 +863,7 @@ convert the search string to a regexp used by regexp search functions."
   (setq isearch-forward forward
 	isearch-regexp regexp
 	isearch-word (or word (and character-fold-search
+                                   (not regexp)
                                    'character-fold-to-regexp))
 	isearch-op-fun op-fun
 	isearch-last-case-fold-search isearch-case-fold-search
-- 
2.39.5