annotate lisp/misc.el @ 1333:1b0339b048ce

[xemacs-hg @ 2003-03-02 09:38:37 by ben] To: xemacs-patches@xemacs.org PROBLEMS: Include nt/PROBLEMS and update. Add note about incremental linking badness. cmdloop.el, custom.el, dumped-lisp.el, files.el, keydefs.el, keymap.el, lisp-mode.el, make-docfile.el, replace.el, simple.el, subr.el, view-less.el, wid-edit.el: Lots of syncing with FSF 21.2. Use if-fboundp in wid-edit.el. New file newcomment.el from FSF. internals/internals.texi: Fix typo. (Build-Time Dependencies): New node. PROBLEMS: Delete. config.inc.samp, xemacs.mak: Eliminate HAVE_VC6, use SUPPORT_EDIT_AND_CONTINUE in its place. No incremental linking unless SUPPORT_EDIT_AND_CONTINUE, since it can cause nasty crashes in pdump. Put warnings about this in config.inc.samp. Report the full compile flags used for src and lib-src in the Installation output. alloc.c, lisp.h, ralloc.c, regex.c: Use ALLOCA() in regex.c to avoid excessive stack allocation. Also fix subtle problem with REL_ALLOC() -- any call to malloc() (direct or indirect) may relocate rel-alloced data, causing buffer text to shift. After any such call, regex must update all its pointers to such data. Add a system, when ERROR_CHECK_MALLOC, whereby regex.c indicates all the places it is prepared to handle malloc()/realloc()/free(), and any calls anywhere in XEmacs outside of this will trigger an abort. alloc.c, dialog-msw.c, eval.c, event-stream.c, general-slots.h, insdel.c, lisp.h, menubar-msw.c, menubar-x.c: Change *run_hook*_trapping_problems to take a warning class, not a string. Factor out code to issue warnings, add flag to call_trapping_problems() to postpone warning issue, and make *run_hook*_trapping_problems issue their own warnings tailored to the hook, postponed in the case of safe_run_hook_trapping_problems() so that the appropriate message can be issued about resetting to nil only when not `quit'. Make record_unwind_protect_restoring_int() non-static. dumper.c: Issue notes about incremental linking problems under Windows. fileio.c: Mule-ize encrypt/decrypt-string code. text.h: Spacing changes.
author ben
date Sun, 02 Mar 2003 09:38:54 +0000
parents 41ff10fd062f
children 308d34e9f07d
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1 ;;; misc.el --- miscellaneous functions for XEmacs
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2
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3 ;; Copyright (C) 1989, 1997 Free Software Foundation, Inc.
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4
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5 ;; Maintainer: FSF
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6 ;; Keywords: extensions, dumped
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7
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8 ;; This file is part of XEmacs.
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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
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; XEmacs is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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22 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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23 ;; 02111-1307, USA.
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24
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25 ;;; Synched up with: FSF 19.34.
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26
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27 ;;; Commentary:
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28
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29 ;; This file is dumped with XEmacs.
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30
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31 ;; 06/11/1997 - Use char-(after|before) instead of
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32 ;; (following|preceding)-char. -slb
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33
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34 ;;; Code:
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35
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36 (defun copy-from-above-command (&optional arg)
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37 "Copy characters from previous nonblank line, starting just above point.
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38 Copy ARG characters, but not past the end of that line.
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39 If no argument given, copy the entire rest of the line.
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40 The characters copied are inserted in the buffer before point."
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41 (interactive "P")
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42 (let ((cc (current-column))
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43 n
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44 (string ""))
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45 (save-excursion
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46 (beginning-of-line)
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47 (backward-char 1)
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48 (skip-chars-backward "\ \t\n")
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49 (move-to-column cc)
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50 ;; Default is enough to copy the whole rest of the line.
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51 (setq n (if arg (prefix-numeric-value arg) (point-max)))
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52 ;; If current column winds up in middle of a tab,
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53 ;; copy appropriate number of "virtual" space chars.
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54 (if (< cc (current-column))
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55 (if (eq (char-before (point)) ?\t)
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56 (progn
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57 (setq string (make-string (min n (- (current-column) cc)) ?\ ))
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58 (setq n (- n (min n (- (current-column) cc)))))
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59 ;; In middle of ctl char => copy that whole char.
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60 (backward-char 1)))
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61 (setq string (concat string
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62 (buffer-substring
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63 (point)
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64 (min (save-excursion (end-of-line) (point))
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65 (+ n (point)))))))
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66 (insert string)))
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67
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68 ;;; misc.el ends here