Mercurial > hg > xemacs-beta
annotate lisp/extents.el @ 5753:dbd8305e13cb
Warn about non-string non-integer ARG to #'gensym, bytecomp.el.
lisp/ChangeLog addition:
2013-08-21 Aidan Kehoe <kehoea@parhasard.net>
* bytecomp.el:
* bytecomp.el (gensym):
* bytecomp.el (byte-compile-gensym): New.
Warn that gensym called in a for-effect context is unlikely to be
useful.
Warn about non-string non-integer ARGs, this is incorrect.
Am not changing the function to error with same, most code that
makes the mistake is has no problems, which is why it has survived
so long.
* window-xemacs.el (save-window-excursion/mapping):
* window.el (save-window-excursion):
Call #'gensym with a string, not a symbol.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Wed, 21 Aug 2013 19:02:59 +0100 |
| parents | 308d34e9f07d |
| children |
| rev | line source |
|---|---|
| 428 | 1 ;;; extents.el --- miscellaneous extent functions not written in C |
| 2 | |
| 3 ;; Copyright (C) 1993-4, 1997 Free Software Foundation, Inc. | |
| 442 | 4 ;; Copyright (C) 2000 Ben Wing. |
| 428 | 5 |
| 6 ;; Keywords: internal, dumped | |
| 7 | |
| 8 ;; This file is part of XEmacs. | |
| 9 | |
|
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10 ;; XEmacs is free software: you can redistribute it and/or modify it |
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11 ;; under the terms of the GNU General Public License as published by the |
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12 ;; Free Software Foundation, either version 3 of the License, or (at your |
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13 ;; option) any later version. |
| 428 | 14 |
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15 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT |
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16 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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17 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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18 ;; for more details. |
| 428 | 19 |
| 20 ;; You should have received a copy of the GNU General Public License | |
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21 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
| 428 | 22 |
| 23 ;;; Synched up with: Not in FSF. | |
| 24 | |
| 25 ;;; Commentary: | |
| 26 | |
| 442 | 27 ;;; Authorship: |
| 28 | |
| 29 ;; Created 1995 Ben Wing. | |
| 30 ;; mapcar-extents (and extent-list?) from stig@hackvan.com, c. 1996. | |
| 428 | 31 |
| 32 ;;; Code: | |
| 33 | |
| 34 ;; an alternative to map-extents. | |
| 35 (defun mapcar-extents (function &optional predicate buffer-or-string from to | |
| 36 flags property value) | |
| 37 "Apply FUNCTION to all extents which overlap a region in BUFFER-OR-STRING. | |
| 38 The region is delimited by FROM and TO. FUNCTION is called with | |
| 39 one argument, the extent. A list of the values returned by FUNCTION | |
| 40 is returned. An optional PREDICATE may be used to further limit the | |
| 41 extents over which FUNCTION is mapped. The optional arguments FLAGS, | |
| 42 PROPERTY, and VALUE may also be used to control the extents passed to | |
| 43 PREDICATE or FUNCTION. See also `map-extents'." | |
| 44 (let (*result*) | |
| 45 (map-extents (if predicate | |
| 46 #'(lambda (ex junk) | |
| 47 (and (funcall predicate ex) | |
| 48 (setq *result* (cons (funcall function ex) | |
| 49 *result*))) | |
| 50 nil) | |
| 51 #'(lambda (ex junk) | |
| 52 (setq *result* (cons (funcall function ex) | |
| 53 *result*)) | |
| 54 nil)) | |
| 55 buffer-or-string from to nil flags property value) | |
| 56 (nreverse *result*))) | |
| 57 | |
| 442 | 58 (defun extent-list (&optional buffer-or-string from to flags property value) |
| 428 | 59 "Return a list of the extents in BUFFER-OR-STRING. |
| 60 BUFFER-OR-STRING defaults to the current buffer if omitted. | |
| 61 FROM and TO can be used to limit the range over which extents are | |
| 62 returned; if omitted, all extents in the buffer or string are returned. | |
| 63 | |
| 64 More specifically, if a range is specified using FROM and TO, only | |
| 65 extents that overlap the range (i.e. begin or end inside of the range) | |
| 66 are included in the list. FROM and TO default to the beginning and | |
| 67 end of BUFFER-OR-STRING, respectively. | |
| 68 | |
| 69 FLAGS controls how end cases are treated. For a discussion of this, | |
| 442 | 70 and exactly what ``overlap'' means, see `map-extents'. PROPERTY and VALUE |
| 71 are also as in `map-extents'. | |
| 428 | 72 |
| 73 If you want to map a function over the extents in a buffer or string, | |
| 442 | 74 consider using `map-extents' or `mapcar-extents' instead. |
| 75 | |
| 76 See also `extents-at'." | |
| 77 (mapcar-extents 'identity nil buffer-or-string from to flags property value)) | |
| 78 | |
| 79 (defun extent-at-event (event &optional property before at-flag) | |
| 80 "Return the smallest extent under EVENT, if any. | |
| 81 PROPERTY, BEFORE, and AT-FLAG are as in `extent-at'." | |
| 82 (let* ((win (event-window event)) | |
| 83 (p (event-point event))) | |
| 84 (and win p (extent-at p (window-buffer win) property before at-flag)))) | |
| 85 | |
| 86 (defun extents-at-event (event &optional property before at-flag) | |
| 87 "Return a list of all extents under EVENT. | |
| 88 PROPERTY, BEFORE, and AT-FLAG are as in `extent-at'." | |
| 89 (let* ((win (event-window event)) | |
| 90 (p (event-point event))) | |
| 91 (and win p (extents-at p (window-buffer win) property before at-flag)))) | |
| 428 | 92 |
| 93 (defun extent-string (extent) | |
| 94 "Return the string delimited by the bounds of EXTENT." | |
| 95 (let ((object (extent-object extent))) | |
| 96 (if (bufferp object) | |
| 97 (buffer-substring (extent-start-position extent) | |
| 98 (extent-end-position extent) | |
| 99 object) | |
| 100 (substring object | |
| 101 (extent-start-position extent) | |
| 102 (extent-end-position extent))))) | |
| 103 | |
| 104 (defun extent-descendants (extent) | |
| 105 "Return a list of all descendants of EXTENT, including EXTENT. | |
| 106 This recursively applies `extent-children' to any children of | |
| 107 EXTENT, until no more children can be found." | |
| 108 (let ((children (extent-children extent))) | |
| 109 (if children | |
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Change (apply 'nconc (mapcar ...)) to (mapcan ...); warn about first form.
Aidan Kehoe <kehoea@parhasard.net>
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110 (mapcan 'extent-descendants children) |
| 428 | 111 (list extent)))) |
| 112 | |
| 113 (defun set-extent-keymap (extent keymap) | |
| 114 "Set EXTENT's `keymap' property to KEYMAP." | |
| 115 (set-extent-property extent 'keymap keymap)) | |
| 116 | |
| 117 (defun extent-keymap (extent) | |
| 118 "Return EXTENT's `keymap' property." | |
| 119 (extent-property extent 'keymap)) | |
| 120 | |
| 121 ;;; extents.el ends here |