| blob | 0c7184678d736d8edec8173736a5a0a84188e95a |
1 ;;; align --- align text to a specific column, by regexp
3 ;; Copyright (C) 1999, 2000 Free Sofware Foundation
5 ;; Author: John Wiegley <johnw@gnu.org>
6 ;; Keywords: convenience languages lisp
7 ;; X-URL: http://www.emacs.org/~johnw/emacs.html
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software; you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 ;; Boston, MA 02111-1307, USA.
26 ;;; Commentary:
28 ;; This mode allows you to align regions in a context-sensitive fashion.
29 ;; The classic use is to align assignments:
30 ;;
31 ;; int a = 1;
32 ;; short foo = 2;
33 ;; double blah = 4;
34 ;;
35 ;; becomes
36 ;;
37 ;; int a = 1;
38 ;; short foo = 2;
39 ;; double blah = 4;
41 ;;; Usage:
43 ;; There are several variables which define how certain "categories"
44 ;; of syntax are to be treated. These variables go by the name
45 ;; `align-CATEGORY-modes'. For example, "c++" is such a category.
46 ;; There are several rules which apply to c++, but since several other
47 ;; languages have a syntax similar to c++ (e.g., c, java, etc), these
48 ;; modes are treated as belonging to the same category.
49 ;;
50 ;; If you want to add a new mode under a certain category, just
51 ;; customize that list, or add the new mode manually. For example, to
52 ;; make jde-mode a c++ category mode, use this code in your .emacs
53 ;; file:
54 ;;
55 ;; (setq align-c++-modes (cons 'jde-mode align-c++-modes))
57 ;; In some programming modes, it's useful to have the aligner run only
58 ;; after indentation is performed. To achieve this, customize or set
59 ;; the variable `align-indent-before-aligning' to t.
61 ;;; Module Authors:
63 ;; In order to incorporate align's functionality into your own
64 ;; modules, there are only a few steps you have to follow.
66 ;; 1. Require or load in the align.el library.
67 ;;
68 ;; 2. Define your alignment and exclusion rules lists, either
69 ;; customizable or not.
70 ;;
71 ;; 3. In your mode function, set the variables
72 ;; `align-mode-rules-list' and `align-mode-exclude-rules-list'
73 ;; to your own rules lists.
75 ;; If there is any need to add your mode name to one of the
76 ;; align-?-modes variables (for example, `align-dq-string-modes'), use
77 ;; `add-to-list', or some similar function which checks first to see
78 ;; if the value is already there. Since the user may customize that
79 ;; mode list, and then write your mode name into their .emacs file,
80 ;; causing the symbol already to be present the next time they load
81 ;; your package.
83 ;; Example:
84 ;;
85 ;; (require 'align)
86 ;;
87 ;; (defcustom my-align-rules-list
88 ;; '((my-rule
89 ;; (regexp . "Sample")))
90 ;; :type align-rules-list-type
91 ;; :group 'my-package)
92 ;;
93 ;; (put 'my-align-rules-list 'risky-local-variable t)
94 ;;
95 ;; (add-to-list 'align-dq-string-modes 'my-package-mode)
96 ;; (add-to-list 'align-open-comment-modes 'my-package-mode)
97 ;;
98 ;; (defun my-mode ()
99 ;; ...
100 ;; (setq align-mode-rules-list my-align-rules-list))
101 ;;
102 ;; Note that if you need to install your own exclusion rules, then you
103 ;; will also need to reproduce any double-quoted string, or open
104 ;; comment exclusion rules that are defined in the standard
105 ;; `align-exclude-rules-list'. At the moment there is no convenient
106 ;; way to mix both mode-local and global rules lists.
108 ;;; History:
110 ;; Version 1.0 was created in the earlier part of 1996, using a very
111 ;; simple algorithm that understand only basic regular expressions.
112 ;; Parts of the code were broken up and included in vhdl-mode.el
113 ;; around this time. After several comments from users, and a need to
114 ;; find a more robust, performant algorithm, 2.0 was born in late
115 ;; 1998. Many different approaches were taken (mostly due to the
116 ;; complexity of TeX tables), but finally a scheme was discovered
117 ;; which worked fairly well for most common usage cases. Development
118 ;; beyond version 2.8 is not planned, except for problems that users
119 ;; might encounter.
121 ;;; Code:
124 "Align text to a specific column, by regexp."
128 ;;; User Variables:
131 "*Hook that gets run after the aligner has been loaded."
136 "*If non-nil, indent the marked region before aligning it."
141 "*An integer that represents the default amount of padding to use.
142 If `align-to-tab-stop' is non-nil, this will represent the number of
143 tab stops to use for alignment, rather than the number of spaces.
144 Each alignment rule can optionally override both this variable. See
145 `align-mode-alist'."
150 "*If non-nil, alignments will always fall on a tab boundary.
151 It may also be a symbol, whose value will be taken."
156 "*If non-nil, used as a heuristic by `align-current'.
157 Since each alignment rule can possibly have its own set of alignment
158 sections (whenever `align-region-separate' is non-nil, and not a
159 string), this heuristic is used to determine how far before and after
160 point we should search in looking for a region separator. Larger
161 values can mean slower perform in large files, although smaller values
162 may cause unexpected behavior at times."
167 "*The face to highlight with if changes are necessary."
172 "*The face to highlight with if no changes are necessary."
178 If nil,then no messages will ever be printed to the minibuffer."
183 "*A list of modes whose syntax resembles C/C++."
188 "*A list of modes where perl syntax is to be seen."
194 "*A list of modes whose syntax resembles Lisp."
200 "*A list of modes whose syntax resembles TeX (and family)."
205 "*A list of modes whose content is plain text."
212 "*A list of modes where double quoted strings should be excluded."
218 "*A list of modes where single quoted strings should be excluded."
225 "*A list of modes with a single-line comment syntax.
226 These are comments as in Lisp, which have a beginning but, end with
227 the line (i.e., `comment-end' is an empty string)."
232 "*Select the method by which alignment sections will be separated.
233 If this is a symbol, that symbol's value will be used.
235 For the sake of clarification, consider the following example, which
236 will be referred to in the descriptions below.
238 int alpha = 1; /* one */
239 double beta = 2.0;
240 long gamma; /* ten */
242 unsigned int delta = 1; /* one */
243 long double epsilon = 3.0;
244 long long omega; /* ten */
246 The possible settings for `align-region-separate' are:
248 `entire' The entire region being aligned will be considered as a
249 single alignment section. Assuming that comments were not
250 being aligned to a particular column, the example would
251 become:
253 int alpha = 1; /* one */
254 double beta = 2.0;
255 long gamma; /* ten */
257 unsigned int delta = 1; /* one */
258 long double epsilon;
259 long long chi = 10; /* ten */
261 `group' Each contiguous set of lines where a specific alignment
262 occurs is considered a section for that alignment rule.
263 Note that each rule will may have any entirely different
264 set of section divisions than another.
266 int alpha = 1; /* one */
267 double beta = 2.0;
268 long gamma; /* ten */
270 unsigned int delta = 1; /* one */
271 long double epsilon;
272 long long chi = 10; /* ten */
274 `largest' When contiguous rule sets overlap, the largest section
275 described will be taken as the alignment section for each
276 rule touched by that section.
278 int alpha = 1; /* one */
279 double beta = 2.0;
280 long gamma; /* ten */
282 unsigned int delta = 1; /* one */
283 long double epsilon;
284 long long chi = 10; /* ten */
286 NOTE: This option is not supported yet, due to algorithmic
287 issues which haven't been satisfactorily resolved. There
288 are ways to do it, but they're both ugly and resource
289 consumptive.
291 regexp A regular expression string which defines the section
292 divider. If the mode you're in has a consistent divider
293 between sections, the behavior will be very similar to
294 `largest', and faster. But if the mode does not use clear
295 separators (for example, if you collapse your braces onto
296 the preceding statement in C or perl), `largest' is
297 probably the better alternative.
299 function A function that will be passed the beginning and ending
300 locations of the region in which to look for the section
301 separator. At the very beginning of the attempt to align,
302 both of these parameters will be nil, in which case the
303 function should return non-nil if it wants each rule to
304 define its own section, or nil if it wants the largest
305 section found to be used as the common section for all rules
306 that occur there.
308 list A list of markers within the buffer that represent where
309 the section dividers lie. Be certain to use markers! For
310 when the aligning begins, the ensuing contract/expanding of
311 whitespace will throw off any non-marker positions.
313 This method is intended for use in Lisp programs, and not
314 by the user."
318 ; (const largest)
339 repeat)
350 case-fold)
354 tab-stop)
358 valid)
362 run-if)
367 integer symbol))
373 justify)
375 ;; make sure this stays up-to-date with any changes
376 ;; in `align-region-separate'
379 separate)
383 ; (const largest)
384 regexp function)))))))
470 ; (valid
471 ; . ,(function
472 ; (lambda ()
473 ; (memq (caar (c-guess-basic-syntax))
474 ; '(brace-list-intro
475 ; brace-list-entry
476 ; brace-entry-open))))))
478 ;; With a prefix argument, comma delimiter will be aligned. Since
479 ;; perl-mode doesn't give us enough syntactic information (and we
480 ;; don't do our own parsing yet), this rule is too destructive to
481 ;; run normally.
529 ; (valid
530 ; . ,(function
531 ; (lambda ()
532 ; (memq (caar (c-guess-basic-syntax))
533 ; '(cpp-macro cpp-macro-cont))))))
562 ;; With a numeric prefix argument, or C-u, space delimited text
563 ;; tables will be aligned.
574 ;; With a negative prefix argument, lists of dollar figures will
575 ;; be aligned.
583 "*An list describing all of the available alignment rules.
584 The format is:
586 ((TITLE
587 (ATTRIBUTE . VALUE) ...)
588 ...)
590 The following attributes are meaningful:
592 `regexp' This required attribute must be either a string describing
593 a regular expression, or a function (described below).
594 For every line within the section that this regular
595 expression matches, the given rule will be applied to that
596 line. The exclusion rules denote which part(s) of the
597 line should not be modified; the alignment rules cause the
598 identified whitespace group to be contracted/expanded such
600 immediately following the identified parenthesis group),
601 occurs in the same column for every line within the
602 alignment section (see `align-region-separate' for a
603 description of how the region is broken up into alignment
604 sections).
606 The `regexp' attribute describes how the text should be
607 treated. Within this regexp, there must be at least one
608 group of characters (typically whitespace) identified by
609 the special opening and closing parens used in regexp
611 the syntax of regular expressions for more info).
613 If `regexp' is a function, it will be called as a
614 replacement for `re-search-forward'. This means that it
615 should return nil if nothing is found to match the rule,
616 or it should set the match data appropriately, move point
617 to the end of the match, and return the value of point.
619 `group' For exclusion rules, the group identifies the range of
620 characters that should be ignored. For alignment rules,
621 these are the characters that will be deleted/expanded for
623 always the first character immediately following this
624 parenthesis group. This attribute may also be a list of
625 integer, in which case multiple alignment characters will
626 be aligned, with the list of integer identifying the
627 whitespace groups which precede them. The default for
628 this attribute is 1.
630 `modes' The `modes' attribute, if set, should name a list of
631 major modes -- or evaluate to such a value -- in which the
632 rule is valid. If not set, the rule will apply to all
633 modes.
635 `case-fold' If `regexp' is an ordinary regular expression string
636 containing alphabetic character, sometimes you may want
637 the search to proceed case-insensitively (for languages
638 that ignore case, such as pascal for example). In that
639 case, set `case-fold' to nil, and the regular expression
640 search will ignore case. If `regexp' is set to a
641 function, that function must handle the job of ignoring
642 case by itself.
644 `tab-stop' If the `tab-stop' attribute is set, and non-nil, the
645 alignment character will always fall on a tab stop
646 (whether it uses tabs to get there or not depends on the
647 value of `indent-tabs-mode'). If the `tab-stop' attribute
648 is set to nil, tab stops will never be used. Otherwise,
649 the value of `align-to-tab-stop' determines whether or not
650 to align to a tab stop. The `tab-stop' attribute may also
651 be a list of t or nil values, corresponding to the number
652 of parenthesis groups specified by the `group' attribute.
654 `repeat' If the `repeat' attribute is present, and non-nil, the
655 rule will be applied to the line continuously until no
656 further matches are found.
658 `valid' If the `valid' attribute is set, it will be used to
659 determine whether the rule should be invoked. This form
660 is evaluated after the regular expression match has been
661 performed, so that it is possible to use the results of
662 that match to determine whether the alignment should be
663 performed. The buffer should not be modified during the
664 evaluation of this form.
666 `run-if' Like `valid', the `run-if' attribute tests whether the
667 rule should be run at all -- even before any searches are
668 done to determine if the rule applies to the alignment
669 region. This can save time, since `run-if' will only be
670 run once for each rule. If it returns nil, the rule will
671 not be attempted.
673 `column' For alignment rules, if the `column' attribute is set --
674 which must be an integer, or a symbol whose value is an
675 integer -- it will be used as the column in which to align
676 the alignment character. If the text on a particular line
677 happens to overrun that column, a single space character,
678 or tab stop (see `align-to-tab-stop') will be added
679 between the last text character and the alignment
680 character.
682 `spacing' Alignment rules may also override the amount of spacing
683 that would normally be used by providing a `spacing'
684 attribute. This must be an integer, or a list of integers
685 corresponding to the number of parenthesis groups matched
686 by the `group' attribute. If a list of value is used, and
687 any of those values is nil, `align-default-spacing' will
688 be used for that subgroup. See `align-default-spacing'
689 for more details on spacing, tab stops, and how to
690 indicate how much spacing should be used. If TAB-STOP is
691 present, it will override the value of `align-to-tab-stop'
692 for that rule.
694 `justify' It is possible with `regexp' and `group' to identify a
695 character group that contains more than just whitespace
696 characters. By default, any non-whitespace characters in
697 that group will also be deleted while aligning the
698 alignment character. However, if the `justify' attribute
699 is set to a non-nil value, only the initial whitespace
700 characters within that group will be deleted. This has
701 the effect of right-justifying the characters that remain,
702 and can be used for outdenting or just plain old right-
703 justification.
705 `separate' Each rule can define its own section separator, which
707 within the region to be aligned. Setting the `separate'
708 attribute overrides the value of `align-region-separate'
709 (see the documentation of that variable for possible
710 values), and any separation argument passed to `align'."
711 :type align-rules-list-type
730 repeat)
741 case-fold)
781 "*An list describing text that should be excluded from alignment.
782 See the documentation for `align-rules-list' for more info."
783 :type align-exclude-rules-list-type
788 ;;; Internal Variables:
791 "Alignment rules specific to the current major mode.
797 "Alignment exclusion rules specific to the current major mode.
805 ;; Sample extension rule set, for vhdl-mode. This should properly be
806 ;; in vhdl-mode.el itself.
839 "*Alignment rules for `vhdl-mode'. See `align-rules-list' for more info."
840 :type align-rules-list-type
846 "Setup the `align-mode-rules-list' variable for `vhdl-mode'."
854 ;;; User Functions:
856 ;;;###autoload
858 "Attempt to align a region based on a set of alignment rules.
859 BEG and END mark the region. If BEG and END are specifically set to
860 nil (this can only be done programmatically), the beginning and end of
861 the current alignment section will be calculated based on the location
862 of point, and the value of `align-region-separate' (or possibly each
863 rule's `separate' attribute).
865 If SEPARATE is non-nil, it overrides the value of
866 `align-region-separate' for all rules, except those that have their
867 `separate' attribute set.
869 RULES and EXCLUDE-RULES, if either is non-nil, will replace the
870 default rule lists defined in `align-rules-list' and
871 `align-exclude-rules-list'. See `align-rules-list' for more details
872 on the format of these lists."
878 align-region-separate)
886 align-exclude-rules-list))
891 align-mode-exclude-rules-list
892 align-exclude-rules-list) nil
893 separator
903 align-exclude-rules-list)))))))
905 ;;;###autoload
907 "Align the current region using an ad-hoc rule read from the minibuffer.
908 BEG and END mark the limits of the region. This function will prompt
909 for the REGEXP to align with. If no prefix arg was specified, you
910 only need to supply the characters to be lined up and any preceding
911 whitespace is replaced. If a prefix arg was specified, the full
912 regexp with parenthesized whitespace should be supplied; it will also
913 prompt for which parenthesis GROUP within REGEXP to modify, the amount
914 of SPACING to use, and whether or not to REPEAT the rule throughout
915 the line. See `align-rules-list' for more information about these
916 options.
918 For example, let's say you had a list of phone numbers, and wanted to
919 align them so that the opening parentheses would line up:
921 Fred (123) 456-7890
922 Alice (123) 456-7890
923 Mary-Anne (123) 456-7890
924 Joe (123) 456-7890
926 There is no predefined rule to handle this, but you could easily do it
928 region, call `align-regexp' and type in that regular expression."
958 ;;;###autoload
960 "Align the selected region as if it were one alignment section.
961 BEG and END mark the extent of the region. If RULES or EXCLUDE-RULES
962 is set to a list of rules (see `align-rules-list'), it can be used to
963 override the default alignment rules that would have been used to
964 align that section."
968 ;;;###autoload
970 "Call `align' on the current alignment section.
971 This function assumes you want to align only the current section, and
972 so saves you from having to specify the region. If RULES or
973 EXCLUDE-RULES is set to a list of rules (see `align-rules-list'), it
974 can be used to override the default alignment rules that would have
975 been used to align that section."
979 ;;;###autoload
981 "Highlight the whitespace which a given rule would have modified.
982 BEG and END mark the extent of the region. TITLE identifies the rule
983 that should be highlighted. If RULES or EXCLUDE-RULES is set to a
984 list of rules (see `align-rules-list'), it can be used to override the
985 default alignment rules that would have been used to identify the text
986 to be colored."
991 "Title of rule to highlight: "
1001 align-exclude-rules-list)))
1002 face)
1005 beg end 'entire
1008 align-exclude-rules-list)
1011 align-exclude-rules-list))
1017 align-highlight-nochange-face))
1028 ;;;###autoload
1030 "Remove any highlighting that was added by `align-highlight-rule'."
1037 ;;;###autoload
1039 "A replacement function for `newline-and-indent', aligning as it goes."
1043 align-region-separate)
1054 ;;; Internal Functions:
1057 "Match REGEXP in TeX mode, counting backslashes appropriately.
1058 END denotes the end of the region to be searched, while REVERSE, if
1059 non-nil, indicates that the search should proceed backward from the
1060 current position."
1076 result))
1079 "Is there a section divider between BEG and END?
1080 SEPARATOR specifies how to look for the section divider. See the
1081 documentation for `align-region-separate' for more details."
1084 nil)
1105 yes))))
1108 "Adjust COLUMN according to the given RULE.
1109 SPACING specifies how much spacing to use.
1110 TAB-STOP specifies whether SPACING refers to tab-stop boundaries."
1114 column
1122 stops nil)
1124 column)))
1127 "Given a position in the buffer, state what column it's in.
1128 POS is the position whose column will be taken. Note that this
1129 function will change the location of point."
1134 "Align the regions specified in REGIONS, a list of cons cells.
1135 PROPS describes formatting features specific to the given regions.
1136 RULE specifies exactly how to perform the alignments.
1137 If FUNC is specified, it will be called with each region that would
1138 have been aligned, rather than modifying the text."
1146 "Given a list of AREAS and formatting PROPS, align according to RULE.
1147 AREAS should be a list of cons cells containing beginning and ending
1148 markers. This function sweeps through all of the beginning markers,
1149 finds out which one starts in the furthermost column, and then deletes
1150 and inserts text such that all of the ending markers occur in the same
1151 column.
1153 If FUNC is non-nil, it will be called for each text region that would
1154 have been aligned. No changes will be made to the buffer."
1158 column))
1162 ecol change look)
1164 ;; Determine the alignment column.
1189 ;; Make all ending positions to occur in the goal column. Since
1190 ;; the whitespace to be modified was already deleted by
1191 ;; `align-region', all we have to do here is indent.
1216 ;; This code works around an oddity in the
1217 ;; FORCE argument of `move-to-column', which
1218 ;; tends to screw up markers if there is any
1219 ;; tabbing.
1241 "Align a region based on a given set of alignment rules.
1242 BEG and END specify the region to be aligned. Either may be nil, in
1243 which case the range will stop at the nearest section division (see
1244 `align-region-separate', and `align-region-heuristic' for more
1245 information').
1247 The region will be divided into separate alignment sections based on
1248 the value of SEPARATE.
1250 RULES and EXCLUDE-RULES are a pair of lists describing how to align
1251 the region, and which text areas within it should be excluded from
1252 alignment. See the `align-rules-list' for more information on the
1253 required format of these two lists.
1255 If FUNC is specified, no text will be modified. What `align-region'
1256 will do with the rules is to search for the alignment areas, as it
1257 regularly would, taking account for exclusions, and then call FUNC,
1258 first with the beginning and ending of the region to be aligned
1259 according to that rule (this can be different for each rule, if BEG
1260 and END were nil), and then with the beginning and ending of each
1261 text region that the rule would have applied to.
1263 The signature of FUNC should thus be:
1265 (defun my-align-function (beg end mode)
1267 Otherwise BEG to END will be a region of text that matches the rule's
1269 (unless (and mode (listp mode))
1272 This feature (of passing a FUNC) is used internally to locate the
1273 position of exclusion areas, but could also be used for any other
1274 purpose where you might want to know where the regions that the
1275 aligner would have dealt with are."
1289 ;; unless the `run-if' form tells us not to, look for the
1290 ;; rule..
1301 group group-c
1302 spacing spacing-c
1303 tab-stop tab-stop-c
1304 repeat repeat-c
1305 valid valid-c
1306 pos-list first
1307 regions index
1308 last-point b e
1309 save-match-data
1310 exclude-p
1311 align-props)
1313 ;; if beg and end were not given, figure out what the
1314 ;; current alignment region should be. Depending on the
1315 ;; value of `align-region-separate' it's possible for
1316 ;; each rule to have its own definition of what that
1317 ;; current alignment section is.
1333 align-region-heuristic))))
1337 terminus t))))
1340 here nil)
1352 align-region-heuristic))))
1358 here nil)
1367 ;; If we have a region to align, and `func' is set and
1368 ;; reports back that the region is ok, then align it.
1373 ;; determine first of all where the exclusions
1374 ;; lie in this region
1376 ;; guard against a problem with recursion and
1377 ;; dynamic binding vs. lexical binding, since
1378 ;; the call to `align-region' below will
1379 ;; re-enter this function, and rebind
1380 ;; `exclude-areas'
1383 nil)
1385 beg end 'entire
1386 exclude-rules nil
1398 ;; set `case-fold-search' according to the
1399 ;; (optional) `case-fold' property
1403 ;; while we can find the rule in the alignment
1404 ;; region..
1409 end-mark t)))
1411 ;; give the user some indication of where we
1412 ;; are, if it's a very large region being
1413 ;; aligned
1418 "Aligning `%s' (rule %d of %d) %d%%..."
1419 rule-index rule-count
1423 "Aligning %d%%..."
1427 ;; if the search ended us on the beginning of
1428 ;; the next line, move back to the end of the
1429 ;; previous line.
1433 ;; lookup the `group' attribute the first time
1434 ;; that we need it
1444 spacing-c t))
1453 align-to-tab-stop)))
1454 tab-stop-c t))
1456 ;; test whether we have found a match on the same
1457 ;; line as a previous match
1464 ;; lookup the `repeat' attribute the first time
1467 repeat-c t))
1469 ;; lookup the `valid' attribute the first time
1472 valid-c t))
1474 ;; remember the beginning position of this rule
1475 ;; match, and save the match-data, since either
1476 ;; the `valid' form, or the code that searches for
1477 ;; section separation, might alter it
1481 ;; unless the `valid' attribute is set, and tells
1482 ;; us that the rule is not valid at this point in
1483 ;; the code..
1486 ;; look to see if this match begins a new
1487 ;; section. If so, we should align what we've
1488 ;; collected so far, and then begin collecting
1489 ;; anew for the next alignment section
1492 thissep))
1495 rule func)
1497 regions nil
1498 align-props nil))
1501 ;; restore the match data
1504 ;; check whether the region to be aligned
1505 ;; straddles an exclusion area
1514 excls nil)
1517 ;; go through the list of parenthesis groups
1518 ;; matching whitespace text to be
1519 ;; contracted/expanded (or possibly
1520 ;; justified, if the `justify' attribute was
1521 ;; set)
1526 ;; we have to use markers, since
1527 ;; `align-areas' may modify the buffer
1532 ;; record this text region for alignment
1538 spacing)
1541 tab-stop))))
1555 ;; if any further rule matches are
1556 ;; found before `eol', then they are
1557 ;; on the same line as this one; this
1558 ;; can only happen if the `repeat'
1559 ;; attribute is non-nil
1566 ;; if `repeat' has not been set, move to
1567 ;; the next line; don't bother searching
1568 ;; anymore on this one
1572 ;; when they are no more matches for this rule,
1573 ;; align whatever was left over
1584 ;; Provide:
1590 ;;; align.el ends here