bug#35202: 27.0.50; Info-quoted false positives and false negatives

[Mauro Aranda <maurooaranda@gmail.com>]

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Tags: patch

Please, review this patch.

Best regards,
Mauro.

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From 97f666e21e8f2837369ac50efeb31ddb5e07c628 Mon Sep 17 00:00:00 2001
From: Mauro Aranda <maurooaranda@gmail.com>
Date: Mon, 8 Apr 2019 20:24:32 -0300
Subject: [PATCH] Avoid false positives and false negatives of Info-quoted face

* lisp/info.el (Info-mode-font-lock-keywords): Modify the regexp, for
matching single quotes of opening single quote and closing single
quote, and avoid matching text followed by a curly quote when it is
not quoting. (Bug#35202)
---
 lisp/info.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/info.el b/lisp/info.el
index f3b413a..268ecd8 100644
--- a/lisp/info.el
+++ b/lisp/info.el
@@ -4269,7 +4269,7 @@ Info-quoted
 ;; the former can be done much more reliably, i.e. without risking
 ;; false positives.
 (defvar Info-mode-font-lock-keywords
-  '(("‘\\([^’]*\\)’" (1 'Info-quoted))))
+  '(("‘\\([‘’]?\\|[^‘’]*\\)’" (1 'Info-quoted))))
 
 ;; Autoload cookie needed by desktop.el
 ;;;###autoload
-- 
2.7.4