Mercurial > hg > xemacs-beta
annotate lisp/fontl-hooks.el @ 5931:8955a38b8ecb cygwin
just barely working
| author | Henry Thompson <ht@markup.co.uk> |
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| date | Wed, 09 Dec 2015 12:53:16 +0000 |
| parents | 308d34e9f07d |
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| rev | line source |
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| 217 | 1 ;;; fontl-hooks.el --- pre-loaded stuff for font-lock. |
| 2 | |
| 3 ;; Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc. | |
| 4 ;; Copyright (C) 1995 Amdahl Corporation. | |
| 5 ;; Copyright (C) 1996 Ben Wing. | |
| 6 | |
| 7 ;; This file is part of XEmacs. | |
| 8 | |
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9 ;; XEmacs is free software: you can redistribute it and/or modify it |
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10 ;; under the terms of the GNU General Public License as published by the |
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11 ;; Free Software Foundation, either version 3 of the License, or (at your |
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12 ;; option) any later version. |
| 217 | 13 |
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14 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT |
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15 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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16 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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17 ;; for more details. |
| 217 | 18 |
| 19 ;; You should have received a copy of the GNU General Public License | |
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20 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
| 217 | 21 |
| 22 ;;; Synched up with: FSF 19.30. (font-lock.el) | |
| 23 | |
| 24 ;;; Commentary: | |
| 25 | |
| 26 ;; The reason for the existence of this file is so that modes can | |
| 27 ;; call `font-lock-set-defaults' without worrying about whether | |
| 28 ;; font-lock is loaded. We don't autoload this from font-lock.el | |
| 29 ;; because loading font-lock.el automatically turns font-lock on. | |
| 30 | |
| 31 ;;; Code: | |
| 32 | |
| 33 (defun font-lock-set-defaults (&optional explicit-defaults) | |
| 34 "Set fontification defaults appropriately for this mode. | |
| 35 Sets `font-lock-keywords', `font-lock-keywords-only', `font-lock-syntax-table', | |
| 36 `font-lock-beginning-of-syntax-function' and | |
| 37 `font-lock-keywords-case-fold-search'. | |
| 38 | |
| 39 If `font-lock-defaults' is currently set, it is used. Otherwise, the | |
| 40 symbol naming the major mode is examined for a `font-lock-defaults' | |
| 41 property. If that is not present, but a variable `foo-mode-font-lock-keywords' | |
| 42 is, the value of that variable is used as the default for | |
| 43 `font-lock-keywords'. Various other backward-compatible behaviors also | |
| 44 exist -- if you're curious, look at the source. | |
| 45 | |
| 46 The value of `font-lock-maximum-decoration' is used to determine which | |
| 47 set of keywords applies, if more than one exists. | |
| 48 | |
| 49 This will also put the buffer into Font Lock mode if any keywords exist | |
| 50 and if auto-fontification is called for, as determined by | |
| 51 `font-lock-auto-fontify', `font-lock-mode-enable-list', and | |
| 52 `font-lock-mode-disable-list'. | |
| 53 | |
| 54 Calling this function multiple times in the same buffer is safe -- this | |
| 55 function keeps track of whether it has already been called in this | |
| 56 buffer, and does nothing if so. This allows for multiple ways of getting | |
| 57 Font Lock properly initialized in a buffer, to deal with existing major | |
| 58 modes that do not call this function. (For example, Font Lock adds this | |
| 59 function to `find-file-hooks'.) | |
| 60 | |
| 61 Major modes that have any font-lock defaults specified should call this | |
| 62 function during their initialization process, after they have set | |
| 63 the variable `major-mode'. | |
| 64 | |
| 65 If EXPLICIT-DEFAULTS is t, this function will not check whether it | |
| 66 has already been run in this buffer, and will always do the full | |
| 67 computation. | |
| 68 | |
| 69 If EXPLICIT-DEFAULTS is not nil and not t, it should be something | |
| 70 that is allowable as a value for `font-lock-defaults' and will be | |
| 71 used to initialize the Font Lock variables." | |
| 72 | |
| 73 (when | |
| 74 (and | |
| 75 (featurep 'font-lock) | |
| 76 (if font-lock-auto-fontify | |
| 77 (not (memq major-mode font-lock-mode-disable-list)) | |
| 78 (memq major-mode font-lock-mode-enable-list)) | |
| 79 (font-lock-set-defaults-1 explicit-defaults) | |
| 80 font-lock-keywords) | |
| 81 (turn-on-font-lock))) | |
| 82 | |
| 83 (provide 'fontl-hooks) | |
| 84 | |
| 85 ;;; fontl-hooks.el ends here |