[COMMIT] Look for cased character classes when deciding on case-fold-search, #'isearch

APPROVE COMMIT NOTE: This patch has been committed. # HG changeset patch # User Aidan Kehoe <kehoea(a)parhasard.net&gt; # Date 1426097175 0 # Wed Mar 11 18:06:15 2015 +0000 # Node ID 0bddb59072b667153117b8c6407cdedaee4dad3b # Parent ccb0cff115d2dc5a0752e3f688a562c48ab90ffc Look for cased character classes when deciding on case-fold-search, #'isearch lisp/ChangeLog addition: 2015-03-11 Aidan Kehoe <kehoea(a)parhasard.net&gt; * isearch-mode.el: * isearch-mode.el (isearch-fix-case): Use the new #'no-case-regexp-p function if treating ISEARCH-STRING as a regular expression; otherwise, use the [[:upper:]] character class. * isearch-mode.el (isearch-no-upper-case-p): Removed. * isearch-mode.el (with-caps-disable-folding): Removed. These two haven't been used since 1998. * occur.el (occur-1): Use #'no-case-regexp-p here. * replace.el (perform-replace): Don't use #'no-upper-case-p, use #'no-case-regexp-p or (string-match "[[:upper:]]" ...) as appropriate. * simple.el: * simple.el (no-upper-case-p): Removed. This did two different things, and its secondary function (examining regular expressions) just became much more complicated; move the regular expression functionality to its own function, use character classes when examining non-regular-expressions instead. The code to look for character classes, and the design decision that this should be done, are from GNU, thank you Stefan Monnier. * simple.el (no-case-regexp-p): New. Given a REGEXP, return non-nil if it has nothing to suggest an interactive user wants a case-sensitive search. * simple.el (with-search-caps-disable-folding): * simple.el (with-interactive-search-caps-disable-folding): Update both these macros to use #'no-case-regexp-p. diff -r ccb0cff115d2 -r 0bddb59072b6 lisp/ChangeLog --- a/lisp/ChangeLog Wed Mar 11 15:06:05 2015 +0000 +++ b/lisp/ChangeLog Wed Mar 11 18:06:15 2015 +0000 ＠＠ -1,3 +1,33 ＠＠ +2015-03-11 Aidan Kehoe <kehoea(a)parhasard.net&gt; + + * isearch-mode.el: + * isearch-mode.el (isearch-fix-case): + Use the new #'no-case-regexp-p function if treating ISEARCH-STRING + as a regular expression; otherwise, use the [[:upper:]] character + class. + * isearch-mode.el (isearch-no-upper-case-p): Removed. + * isearch-mode.el (with-caps-disable-folding): Removed. + These two haven't been used since 1998. + * occur.el (occur-1): + Use #'no-case-regexp-p here. + * replace.el (perform-replace): + Don't use #'no-upper-case-p, use #'no-case-regexp-p or + (string-match "[[:upper:]]" ...) as appropriate. + * simple.el: + * simple.el (no-upper-case-p): Removed. This did two different + things, and its secondary function (examining regular expressions) + just became much more complicated; move the regular expression + functionality to its own function, use character classes when + examining non-regular-expressions instead. + The code to look for character classes, and the design decision + that this should be done, are from GNU, thank you Stefan Monnier. + * simple.el (no-case-regexp-p): New. + Given a REGEXP, return non-nil if it has nothing to suggest an + interactive user wants a case-sensitive search. + * simple.el (with-search-caps-disable-folding): + * simple.el (with-interactive-search-caps-disable-folding): + Update both these macros to use #'no-case-regexp-p. + 2015-03-11 Aidan Kehoe <kehoea(a)parhasard.net&gt; Correct #'clear-message and friends so the START and END supplied diff -r ccb0cff115d2 -r 0bddb59072b6 lisp/isearch-mode.el --- a/lisp/isearch-mode.el Wed Mar 11 15:06:05 2015 +0000 +++ b/lisp/isearch-mode.el Wed Mar 11 18:06:15 2015 +0000 ＠＠ -1068,7 +1068,11 ＠＠ (not isearch-fixed-case) search-caps-disable-folding) (setq isearch-case-fold-search - (no-upper-case-p isearch-string isearch-regexp))) + (if isearch-regexp + (no-case-regexp-p isearch-string) + (save-match-data + (let (case-fold-search) + (not (string-match "[[:upper:]]" isearch-string))))))) (setq isearch-mode (if case-fold-search (if isearch-case-fold-search " Isearch" ;As God Intended Mode ＠＠ -1856,15 +1860,6 ＠＠ t)) isearch-unhidden-extents))))) -(defun isearch-no-upper-case-p (string) - "Return t if there are no upper case chars in string. -But upper case chars preceded by \\ do not count since they -have special meaning in a regexp." - ;; this incorrectly returns t for "\\\\A" - (let ((case-fold-search nil)) - (not (string-match "\\(^\\|[^\\]\\)[A-Z]" string)))) -(make-obsolete 'isearch-no-upper-case-p 'no-upper-case-p) - ;; Portability functions to support various Emacs versions. (defun isearch-char-to-string (c) ＠＠ -1876,20 +1871,6 ＠＠ ; (isearch-char-to-string c)) (define-function 'isearch-text-char-description 'text-char-description) - -;; Used by etags.el and info.el -(defmacro with-caps-disable-folding (string &rest body) "\ -Eval BODY with `case-fold-search' let to nil if STRING contains -uppercase letters and `search-caps-disable-folding' is t." - `(let ((case-fold-search - (if (and case-fold-search search-caps-disable-folding) - (isearch-no-upper-case-p ,string) - case-fold-search))) - ,＠body)) -(make-obsolete 'with-caps-disable-folding 'with-search-caps-disable-folding) -(put 'with-caps-disable-folding 'lisp-indent-function 1) -(put 'with-caps-disable-folding 'edebug-form-spec '(form body)) -  ;;;======================================================== ;;; Advanced highlighting diff -r ccb0cff115d2 -r 0bddb59072b6 lisp/occur.el --- a/lisp/occur.el Wed Mar 11 15:06:05 2015 +0000 +++ b/lisp/occur.el Wed Mar 11 18:06:15 2015 +0000 ＠＠ -394,8 +394,7 ＠＠ (let ((count (occur-engine regexp active-bufs occur-buf (or nlines list-matching-lines-default-context-lines) - (and case-fold-search - (no-upper-case-p regexp t)) + (and case-fold-search (no-case-regexp-p regexp)) list-matching-lines-buffer-name-face nil list-matching-lines-face t))) (let* ((bufcount (length active-bufs)) diff -r ccb0cff115d2 -r 0bddb59072b6 lisp/replace.el --- a/lisp/replace.el Wed Mar 11 15:06:05 2015 +0000 +++ b/lisp/replace.el Wed Mar 11 18:06:15 2015 +0000 ＠＠ -563,7 +563,11 ＠＠ ;; XEmacs addition (qr-case-fold-search (if (and case-fold-search search-caps-disable-folding) - (no-upper-case-p search-string regexp-flag) + (if regexp-flag + (no-case-regexp-p search-string) + (save-match-data + (let (case-fold-search) + (not (string-match "[[:upper:]]" search-string))))) case-fold-search)) (message (if query-flag diff -r ccb0cff115d2 -r 0bddb59072b6 lisp/simple.el --- a/lisp/simple.el Wed Mar 11 15:06:05 2015 +0000 +++ b/lisp/simple.el Wed Mar 11 18:06:15 2015 +0000 ＠＠ -94,47 +94,70 ＠＠ "Warnings customizations." :group 'minibuffer) - (defcustom search-caps-disable-folding t "*If non-nil, upper case chars disable case fold searching. This does not apply to \"yanked\" strings." :type 'boolean :group 'editing-basics) -;; This is stolen (and slightly modified) from FSF emacs's -;; `isearch-no-upper-case-p'. -(defun no-upper-case-p (string &optional regexp-flag) - "Return t if there are no upper case chars in STRING. -If REGEXP-FLAG is non-nil, disregard letters preceded by `\\' (but not `\\\\') -since they have special meaning in a regexp." +(defun no-case-regexp-p (regexp) + "Return t if there are no case-specific constructs in REGEXP. + +Lower case characters are regarded as not case-specific. Upper case +characters are usually regarded as case-specific, but upper case characters +used in special regexp constructs, where they do not match upper case +characters specifically, are regarded as not case-specific. In contrast, the +character classes [:lower:] and [:upper:] are viewed as case-specific. + +This is intended to be used by interactive searching code to decide, in a +do-what-I-mean fashion, whether a given search should be case-sensitive." (let ((case-fold-search nil)) - (not (string-match (if regexp-flag - "\\(^\\|\\\\\\\\\\|[^\\]\\)[A-Z]" - "[A-Z]") - string)) - )) - -(defmacro with-search-caps-disable-folding (string regexp-flag &rest body) "\ -Eval BODY with `case-fold-search' let to nil if `search-caps-disable-folding' -is non-nil, and if STRING (either a string or a regular expression according -to REGEXP-FLAG) contains uppercase letters." + (save-match-data + (not (or (string-match "\\(^\\|\\\\\\\\\\|[^\\]\\)[[:upper:]]" regexp) + (and (string-match "\\[:\\(upp\\|low\\)er:]" regexp) + (condition-case err + (progn + (string-match (substring regexp 0 + (match-beginning 0)) "") + nil) + (invalid-regexp + (equal "Unmatched [ or [^" (cadr err)))))))))) + +(defmacro* with-search-caps-disable-folding (string regexp-p &body body) + "Execute the forms in BODY, respecting `search-caps-disable-folding'. + +Within BODY, bind `case-fold-search' to nil if `search-caps-disable-folding' +is non-nil, REGEXP-P is nil, and if STRING contains any uppercase characters. + +If REGEXP-P is non-nil, treat STRING as a regular expression, and bind +`case-fold-search' to nil if it contains uppercase characters that are +not special regular expression constructs, or if it contains +case-specific character classes such as `[[:upper:]]' or +`[[:lower:]]'. See `no-case-regexp-p'." `(let ((case-fold-search (if (and case-fold-search search-caps-disable-folding) - (no-upper-case-p ,string ,regexp-flag) + (if ,regexp-p + (no-case-regexp-p ,string) + (save-match-data + (let (case-fold-search) + (not (string-match "[[:upper:]]" ,string))))) case-fold-search))) ,＠body)) (put 'with-search-caps-disable-folding 'lisp-indent-function 2) (put 'with-search-caps-disable-folding 'edebug-form-spec '(sexp sexp &rest form)) -(defmacro with-interactive-search-caps-disable-folding (string regexp-flag - &rest body) - "Same as `with-search-caps-disable-folding', but only in the case of a -function called interactively." +(defmacro* with-interactive-search-caps-disable-folding (string regexp-p + &body body) + "Like `with-search-caps-disable-folding', but only when interactive." `(let ((case-fold-search - (if (and (interactive-p) - case-fold-search search-caps-disable-folding) - (no-upper-case-p ,string ,regexp-flag) + (if (and (interactive-p) case-fold-search + search-caps-disable-folding) + (if ,regexp-p + (no-case-regexp-p ,string) + (save-match-data + (let (case-fold-search) + (not (string-match "[[:upper:]]" ,string))))) case-fold-search))) ,＠body)) (put 'with-interactive-search-caps-disable-folding 'lisp-indent-function 2) -- ‘Tramadol is further fed to cattle […] when working them […] (as draft animals) so that the animals do not get tired quickly. …’ — Angewandte Chemie, Sept 2014, describing the social context of (synthetic) tramadol having been found in Cameroon tree roots. _______________________________________________ XEmacs-Patches mailing list XEmacs-Patches(a)xemacs.org http://lists.xemacs.org/mailman/listinfo/xemacs-patches