calc/calc-help.el (calc-describe-thing): Quote strings which could

look like regexps.

2 files changed, 11 insertions, 6 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 1ea03b7630c..d05add5ab6b 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2014-10-02  
+
+        * calc/calc-help.el (calc-describe-thing): Quote strings
+        which could look like regexps.
+
 2014-10-01  Stefan Monnier  <monnier@iro.umontreal.ca>
 
         Consolidate x-select-text.
diff --git a/lisp/calc/calc-help.el b/lisp/calc/calc-help.el
index be04e5a12c0..dfd29230fe5 100644
--- a/lisp/calc/calc-help.el
+++ b/lisp/calc/calc-help.el
@@ -366,9 +366,9 @@ C-w  Describe how there is no warranty for Calc."
       (Info-goto-node (buffer-substring (match-beginning 1) (match-end 1))))
     (or (let ((case-fold-search nil))
           (or (re-search-forward (format "\\[`%s'\\]\\|(`%s')\\|\\<The[ \n]`%s'"
-                                         (or target thing)
-                                         (or target thing)
-                                         (or target thing)) nil t)
+                                         (or target (regexp-quote thing))
+                                         (or target (regexp-quote thing))
+                                         (or target (regexp-quote thing))) nil t)
               (and not-quoted
                    (let ((case-fold-search t))
                      (search-forward (or target thing) nil t)))
@@ -376,9 +376,9 @@ C-w  Describe how there is no warranty for Calc."
               (search-forward (or target thing) nil t)))
         (let ((case-fold-search t))
           (or (re-search-forward (format "\\[`%s'\\]\\|(`%s')\\|\\<The[ \n]`%s'"
-                                         (or target thing)
-                                         (or target thing)
-                                         (or target thing)) nil t)
+                                         (or target (regexp-quote thing))
+                                         (or target (regexp-quote thing))
+                                         (or target (regexp-quote thing))) nil t)
               (search-forward (format "`%s'" (or target thing)) nil t)
               (search-forward (or target thing) nil t))))
     (beginning-of-line)