* lisp/international/mule-cmds.el (read-char-by-name): Move let-binding

of completion-ignore-case around completing-read to fix regression
exhibited by the test case `C-x 8 RET *acc TAB' and caused by
`string-match-p' using the nil value of `case-fold-search' and
`completion-ignore-case' in `completion-pcm--all-completions'..

Fixes: debbugs:12615

2 files changed, 16 insertions, 8 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 1d045425720..ee55ef04858 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,12 @@
+2013-01-09  Juri Linkov  <juri@jurta.org>
+
+        * international/mule-cmds.el (read-char-by-name): Move let-binding
+        of completion-ignore-case around completing-read to fix regression
+        exhibited by the test case `C-x 8 RET *acc TAB' and caused by
+        `string-match-p' using the nil value of `case-fold-search' and
+        `completion-ignore-case' in `completion-pcm--all-completions'.
+        (Bug#12615).
+
 2013-01-07  Glenn Morris  <rgm@gnu.org>
 
         * progmodes/compile.el (compilation-parse-errors):
diff --git a/lisp/international/mule-cmds.el b/lisp/international/mule-cmds.el
index 57fd95a1692..f51daa0eac0 100644
--- a/lisp/international/mule-cmds.el
+++ b/lisp/international/mule-cmds.el
@@ -2945,14 +2945,13 @@ at the beginning of the name.
 This function also accepts a hexadecimal number of Unicode code
 point or a number in hash notation, e.g. #o21430 for octal,
 #x2318 for hex, or #10r8984 for decimal."
-  (let ((input
-         (completing-read
-          prompt
-          (lambda (string pred action)
-            (let ((completion-ignore-case t))
-              (if (eq action 'metadata)
-                  '(metadata (category . unicode-name))
-                (complete-with-action action (ucs-names) string pred)))))))
+  (let* ((completion-ignore-case t)
+         (input (completing-read
+                 prompt
+                 (lambda (string pred action)
+                   (if (eq action 'metadata)
+                       '(metadata (category . unicode-name))
+                     (complete-with-action action (ucs-names) string pred))))))
     (cond
      ((string-match-p "\\`[0-9a-fA-F]+\\'" input)
       (string-to-number input 16))