diff options
Diffstat (limited to 'lisp/isearch.el')
| -rw-r--r-- | lisp/isearch.el | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/lisp/isearch.el b/lisp/isearch.el index 6ef83c68fd8..121ccefacd1 100644 --- a/lisp/isearch.el +++ b/lisp/isearch.el @@ -1,7 +1,7 @@ ;;; isearch.el --- incremental search minor mode ;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, -;; 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. +;; 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. ;; Author: Daniel LaLiberte <liberte@cs.uiuc.edu> ;; Maintainer: FSF @@ -2235,7 +2235,18 @@ since they have special meaning in a regexp." (setq found t)) (setq quote-flag nil))) (setq i (1+ i))) - (not found))) + (not (or found + ;; Even if there's no uppercase char, we want to detect the use + ;; of [:upper:] or [:lower:] char-class, which indicates + ;; clearly that the user cares about case distinction. + (and regexp-flag (string-match "\\[:\\(upp\\|low\\)er:]" string) + (condition-case err + (progn + (string-match (substring string 0 (match-beginning 0)) + "") + nil) + (invalid-regexp + (equal "Unmatched [ or [^" (cadr err))))))))) ;; Portability functions to support various Emacs versions. |