(occur): If regexp has uppercase in it, match it case-sensitively.

1 files changed, 6 insertions, 1 deletions

diff --git a/lisp/replace.el b/lisp/replace.el
index 24411f4739f..30109b87ba7 100644
--- a/lisp/replace.el
+++ b/lisp/replace.el
@@ -348,7 +348,10 @@ Interactively it is the prefix arg.
 
 The lines are shown in a buffer named `*Occur*'.
 It serves as a menu to find any of the occurrences in this buffer.
-\\[describe-mode] in that buffer will explain how."
+\\[describe-mode] in that buffer will explain how.
+
+If REGEXP contains upper case characters (excluding those preceded by
+\\), the matching is case-sensitive."
   (interactive
    (list (let* ((default (car regexp-history))
                 (input
@@ -371,6 +374,8 @@ It serves as a menu to find any of the occurrences in this buffer.
         (dir default-directory)
         (linenum 1)
         (prevpos (point-min))
+        (case-fold-search  (and case-fold-search
+                                (isearch-no-upper-case-p regexp t)))
         (final-context-start (make-marker)))
 ;;;     (save-excursion
 ;;;       (beginning-of-line)