| blob | 750f302d4227ee28b024f8388b38591b77ebd688 |
1 ;;; info.el --- info package for Emacs
3 ;; Copyright (C) 1985,86,92,93,94,95,96,97,98,99,2000,01,02,03,2004
4 ;; Free Software Foundation, Inc.
6 ;; Maintainer: FSF
7 ;; Keywords: help
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 ;; Note that nowadays we expect info files to be made using makeinfo.
29 ;; In particular we make these assumptions:
30 ;; - a menu item MAY contain colons but not colon-space ": "
31 ;; - a menu item ending with ": " (but not ":: ") is an index entry
32 ;; - a node name MAY NOT contain a colon
33 ;; This distinction is to support indexing of computer programming
34 ;; language terms that may contain ":" but not ": ".
36 ;;; Code:
41 "Info subsystem"
47 "Stack of info nodes user has visited.
51 "List of all info nodes user has visited.
56 This is convenient if you want to write info files by hand.
57 However, we recommend that you not do this.
58 It is better to write a Texinfo file and generate the Info file from that,
59 because that gives you a printed manual as well."
64 "Non-nil allows Info to execute Lisp code associated with nodes.
72 "Face for Info node names."
78 "Face for every third `*' in an Info menu."
85 "Face for Info cross-references."
92 "Face for visited Info cross-references."
96 "*Non-nil means to fontify visited nodes in a different face."
102 "*Maximum size of menu to fontify if `font-lock-mode' is non-nil."
107 "*Non-nil means to put the beginning-of-node links in an Emacs header-line.
108 A header-line does not scroll with the rest of the buffer."
114 "Face for Info cross-references in a node header."
119 "Face for Info nodes in a node header."
123 "List of directories to search for Info documentation files.
124 If nil, meaning not yet initialized, Info uses the environment
125 variable INFOPATH to initialize it, or `Info-default-directory-list'
126 if there is no INFOPATH variable in the environment, or the
127 concatenation of the two if INFOPATH ends with a colon.
129 When `Info-directory-list' is initialized from the value of
130 `Info-default-directory-list', and Emacs is installed in one of the
131 standard directories, the directory of Info files that come with Emacs
132 is put last (so that local Info files override standard ones).
134 When `Info-directory-list' is initialized from the value of
135 `Info-default-directory-list', and Emacs is not installed in one
136 of the standard directories, the first element of the resulting
137 list is the directory where Emacs installs the Info files that
138 come with it. This is so that Emacs's own manual, which suits the
139 version of Emacs you are using, will always be found first. This
140 is useful when you install an experimental version of Emacs without
141 removing the standard installation.
143 If you want to override the order of directories in
144 `Info-default-directory-list', set INFOPATH in the environment.
146 If you run the Emacs executable from the `src' directory in the Emacs
147 source tree, and INFOPATH is not defined, the `info' directory in the
148 source tree is used as the first element of `Info-directory-list', in
149 place of the installation Info directory. This is useful when you run
153 "List of additional directories to search for Info documentation files.
154 These directories are searched after those in `Info-directory-list'."
160 If this is non-nil, and you scroll far enough in a node that its menu
162 moves to a subnode indicated by the following menu item. This means
163 that you visit a subnode before getting to the end of the menu.
165 Setting this option to nil results in behavior similar to the stand-alone
166 Info reader program, which visits the first subnode from the menu only
167 when you hit the end of the current node."
173 "*If non-nil, hide the tag and section reference in *note and * menu items.
175 If value is non-nil but not t or `hide', the reference section is still shown."
184 "*If non-nil, attempt to refill paragraphs with hidden references.
185 This refilling may accidentally remove explicit line breaks in the info
186 file, so be prepared for a few surprises if you enable this feature."
192 "*If non-nil, regular expression to match a sequence of whitespace chars.
193 This applies to Info search for regular expressions.
195 In the Customization buffer, that is `[' followed by a space,
196 a tab, a carriage return (control-M), a newline, and `]+'."
201 ;; Try to obey obsolete Info-fontify settings.
204 "Hooks run when `Info-mode' is called."
209 "Hooks run when `Info-select-node' is called."
217 "Info file that Info is now looking at, or nil.
218 This is the name that was specified in Info, not the actual file name.
219 It doesn't contain directory names or file name extensions added by Info.
223 "Info subfile that is actually in the *info* buffer now.
230 "Marker pointing at beginning of current Info file's tag table.
243 "Point location within a selected node.
244 If string, the point is moved to the proper occurrence of the
245 name of the followed cross reference within a selected node.
250 \f
252 ;; The MS-DOS list should work both when long file names are
253 ;; supported (Windows 9X), and when only 8+3 file names are available.
295 "List of file name suffixes and associated decoding commands.
296 Each entry should be (SUFFIX . STRING); the file is given to
297 the command as standard input.
299 STRING may be a list of strings. In that case, the first element is
300 the command name, and the rest are arguments to that command.
302 If STRING is nil, no decoding is done.
303 Because the SUFFIXes are tried in order, the empty string should
306 ;; Concatenate SUFFIX onto FILENAME. SUFFIX should start with a dot.
307 ;; First, on MS-DOS with no long file names support, delete some of
308 ;; the extension in FILENAME to make room.
313 ;; How long is the extension in FILENAME (not counting the dot).
315 ext-left)
316 ;; SUFFIX starts with a dot. If FILENAME already has one,
317 ;; get rid of the one in SUFFIX (unless suffix is empty).
322 ;; How many chars of that extension should we keep?
324 ;; Get rid of the rest of the extension, and add SUFFIX.
327 suffix))))
334 "Insert the contents of an info file in the current buffer.
335 Do the right thing if the file has been compressed or zipped."
339 t))
341 lfn))
342 fullname decoder done)
344 ;; FILENAME exists--see if that name contains a suffix.
345 ;; If so, set DECODE accordingly.
350 filename)))
354 ;; Try adding suffixes to FILENAME and see if we can find something.
360 ;; If we found a file with a suffix, set DECODER
361 ;; according to the suffix.
363 ;; When the MS-DOS port runs on Windows, we need to check
364 ;; the short variant of a long file name as well.
374 ;; check for conflict with jka-compr
385 default-directory)))
391 \f
398 "../info/"
399 invocation-directory)))
401 infodir
403 "../../../info/"
404 invocation-directory))
406 infodir))))))
407 alternative)
410 ;; Uninstalled, Emacs builddir != srcdir.
411 sibling
412 ;; Uninstalled, builddir == srcdir
413 source))
415 ;; On DOS/NT, we use movable executables always,
416 ;; and we must always find the Info dir at run time.
418 nil
419 ;; Use invocation-directory for Info
420 ;; only if we used it for exec-directory also.
423 installation-directory))))
425 Info-default-directory-list
426 ;; `alternative' contains the Info files that came with this
427 ;; version, so we should look there first. `Info-insert-dir'
428 ;; currently expects to find `alternative' first on the list.
430 ;; Don't drop the last part, it might contain non-Emacs stuff.
431 ;; (reverse (cdr (reverse
435 "Initialize `Info-directory-list', if that hasn't been done yet."
448 ;;;###autoload
450 "Like `info' but show the Info buffer in another window."
456 ;;;###autoload (add-hook 'same-window-regexps "\\*info\\*\\(\\|<[0-9]+>\\)")
458 ;;;###autoload (put 'info 'info-file "emacs")
459 ;;;###autoload
461 "Enter Info, the documentation browser.
462 Optional argument FILE specifies the file to examine;
463 the default is the top-level directory of Info.
464 Called from a program, FILE may specify an Info node of the form
465 `(FILENAME)NODENAME'.
466 Optional argument BUFFER specifies the Info buffer name;
467 the default buffer name is *info*. If BUFFER exists,
468 just switch to BUFFER. Otherwise, create a new buffer
469 with the top-level Info directory.
471 In interactive use, a non-numeric prefix argument directs
472 this command to read a file name from the minibuffer.
473 A numeric prefix argument selects an Info buffer with the prefix number
474 appended to the Info buffer name.
476 The search path for Info files is in the variable `Info-directory-list'.
477 The top-level Info directory is made by combining all the files named `dir'
478 in all the directories in that path."
488 ;; If argument already contains parentheses, don't add another set
489 ;; since the argument will then be parsed improperly. This also
490 ;; has the added benefit of allowing node names to be included
491 ;; following the parenthesized filename.
498 ;;;###autoload
500 "Display the Emacs manual in Info mode."
504 ;;;###autoload
506 "Run Emacs as a standalone Info reader.
507 Usage: emacs -f info-standalone [filename]
521 \f
522 ;; See if the accessible portion of the buffer begins with a node
523 ;; delimiter, and the node header line which follows matches REGEXP.
524 ;; Typically, this test will be followed by a loop that examines the
525 ;; rest of the buffer with (search-forward "\n\^_"), and it's a pity
526 ;; to have the overhead of this special test inside the loop.
528 ;; This function changes match-data, but supposedly the caller might
529 ;; want to use the results of re-search-backward.
531 ;; The return value is the value of point at the beginning of matching
532 ;; REGEXP, if the function succeeds, nil otherwise.
544 Optional second argument NOERROR, if t, means if file is not found
545 just return nil (no error)."
546 ;; Convert filename to lower case if not found as specified.
547 ;; Expand it.
562 ;; If specified name starts with `./'
563 ;; then just try current directory.
566 ;; No point in searching for an
567 ;; absolute file name
571 Info-additional-directory-list)
572 Info-directory-list)))))
573 ;; Search the directory list for file FILENAME.
578 ;; Try several variants of specified name.
582 t)))
593 lfn
605 filename)))
608 "Go to an info node specified as separate FILENAME and NODENAME.
609 NO-GOING-BACK is non-nil if recovering from an error in this function;
610 it says do not attempt further (recursive) error recovery."
613 ;; Record the node we are leaving.
617 Info-history)))
618 ;; Go into info buffer.
623 "Use the `Info-mode' to browse the current info buffer.
624 If a prefix arg is provided, it queries for the NODENAME which
636 ;; It's perhaps a bit nasty to kill the *info* buffer to force a re-read,
637 ;; but at least it keeps this routine (which is only for the benefit of
638 ;; makeinfo-buffer) out of the way of normal operations.
639 ;;
641 "Go to an info node FILENAME and NODENAME, re-reading disk contents.
642 When *info* is already displaying FILENAME and NODENAME, the window position
643 is preserved, if possible."
659 ;; note goto-line is no good, we want to measure from point-min
666 ;; only add to the history when coming from a different file+node
671 "Find a node in a tag table.
672 MARKER specifies the buffer and position to start searching at.
673 REGEXP is a regular expression matching nodes or references. Its first
674 group should match `Node:' or `Ref:'.
675 CASE-FOLD t means search for a case-insensitive match.
676 If a match was found, value is a list (FOUND-ANCHOR POS MODE), where
677 FOUND-ANCHOR is non-nil if a `Ref:' was matched, POS is the position
678 where the match was found, and MODE is `major-mode' of the buffer in
679 which the match was found."
685 ;; Search tag table
690 major-mode)))))
693 "Find a node in a tag table.
694 MARKER specifies the buffer and position to start searching at.
695 REGEXP is a regular expression matching nodes or references. Its first
696 group should match `Node:' or `Ref:'.
697 If a match was found, value is a list (FOUND-ANCHOR POS MODE), where
698 FOUND-ANCHOR is non-nil if a `Ref:' was matched, POS is the position
699 where the match was found, and MODE is `major-mode' of the buffer in
700 which the match was found.
701 This function tries to find a case-sensitive match first, then a
702 case-insensitive match is tried."
706 result))
709 "Find a node or anchor in the current buffer.
710 REGEXP is a regular expression matching nodes or references. Its first
711 group should match `Node:' or `Ref:'.
712 CASE-FOLD t means search for a case-insensitive match.
713 Value is the position at which a match was found, or nil if not found."
715 found)
727 found)))
730 "Find a node or anchor in the current buffer.
731 REGEXP is a regular expression matching nodes or references. Its first
732 group should match `Node:' or `Ref:'.
733 Value is the position at which a match was found, or nil if not found.
734 This function looks for a case-sensitive match first. If none is found,
735 a case-insensitive match is tried."
747 anchorpos)
748 ;; Switch files if necessary
753 Info-current-subfile nil
754 Info-current-file-completions nil
755 buffer-file-name nil)
770 ;; See whether file has a tag table. Record the location if yes.
773 ;; Use string-equal, not equal, to ignore text props.
778 ;; We have a tag table. Find its beginning.
779 ;; Is this an indirect file?
785 ;; It is indirect. Copy it to another buffer
786 ;; and record that the tag table is in that buffer.
809 ))
810 ;; Use string-equal, not equal, to ignore text props.
814 ;; Possibilities:
815 ;;
816 ;; 1. Anchor found in tag table
817 ;; 2. Anchor *not* in tag table
818 ;;
819 ;; 3. Node found in tag table
820 ;; 4. Node *not* found in tag table, but found in file
821 ;; 5. Node *not* in tag table, and *not* in file
822 ;;
823 ;; *Or* the same, but in an indirect subfile.
825 ;; Search file for a suitable node.
835 ;; First, search a tag table, if any
841 ;; FOUND is (ANCHOR POS MODE).
844 ;; If this is an indirect file, determine which
845 ;; file really holds this node and read it in.
847 ;; Note that the current buffer must be the
848 ;; *info* buffer on entry to
849 ;; Info-read-subfile. Thus the hackery above.
852 ;; Handle anchor
857 ;; Else we may have a node, which we search for:
861 ;; Now search from our advised position (or from beg of
862 ;; buffer) to find the actual node. First, check
863 ;; whether the node is right where we are, in case the
864 ;; buffer begins with a node.
877 ;; No such anchor in tag table or node in tag table or file
885 ;; Add anchors to the history too
896 ;; If we did not finish finding the specified node,
897 ;; go back to the previous one.
904 ;; Cache the contents of the (virtual) dir file, once we have merged
905 ;; it for the first time, so we can save time subsequently.
908 ;; Cache for the directory we decided to use for the default-directory
909 ;; of the merged dir text.
912 ;; Record the file attributes of all the files from which we
913 ;; constructed Info-dir-contents.
918 ;; Construct the Info directory node by merging the files named `dir'
919 ;; from various directories. Set the *info* buffer's
920 ;; default-directory to the first directory we actually get any text
921 ;; from.
924 ;; Verify that none of the files we used has changed
925 ;; since we used it.
929 ;; Handle symlinks
932 ;; Don't compare the access time.
936 Info-dir-file-attributes))))
942 Info-additional-directory-list)
943 Info-directory-list))
945 ;; Bind this in case the user sets it to nil.
947 ;; This is set non-nil if we find a problem in some input files.
948 problems
949 buffers buffer others nodes dirs-done)
951 ;; Search the directory list for the directory file.
956 ;; Try several variants of specified name.
957 ;; Try upcasing, appending `.info', or both.
972 dirs-done)))
982 file)
994 ;; Distinguish the dir file that comes with Emacs from all the
995 ;; others. Yes, that is really what this is supposed to do.
996 ;; The definition of `Info-directory-list' puts it first on that
997 ;; list and so last in `buffers' at this point.
1001 ;; Insert the entire original dir file as a start; note that we've
1002 ;; already saved its default directory to use as the default
1003 ;; directory for the whole concatenation.
1006 ;; Look at each of the other buffers one by one.
1009 ;; In each, find all the menus.
1012 ;; Find each menu, and add an elt to NODES for it.
1016 nodename end)
1028 ;; Add to the main menu a menu item for each other node.
1040 end t)
1044 ;; Now take each node of each of the other buffers
1045 ;; and merge it into the main buffer.
1050 ;; Find the like-named node in the main buffer.
1054 nil t)
1059 ;; If none exists, add one.
1062 ;; Merge the text from the other buffer's menu
1063 ;; into the menu in the like-named node in the main buffer.
1066 ;; Kill all the buffers we just made, including the special one excised.
1086 ;; Remove duplicate headings in the same menu.
1089 ;; Look for the next heading to unify.
1094 ;; Check whether this heading should be streamlined.
1104 ;; Look for other headings of the same category and merge them.
1110 ;; Delete redundant heading.
1112 ;; Push the entries onto `text'.
1119 ;; Insert the entries just found.
1127 ;; Now remove duplicate entries under the same heading.
1140 ;; Note that on entry to this function the current-buffer must be the
1141 ;; *info* buffer; not the info tags buffer.
1143 ;; NODEPOS is either a position (in the Info file as a whole,
1144 ;; not relative to a subfile) or the name of a subfile.
1146 lastfilename)
1158 thisfilepos thisfilename)
1162 ;; read in version 19 stops at the end of number.
1163 ;; Advance to the next line.
1172 ;; Assume previous buffer is in Info-mode.
1173 ;; (set-buffer (get-buffer "*info*"))
1182 ;; Widen in case we are in the same subfile as before.
1192 "Unescape double quotes and backslashes in VALUE."
1198 unquote))
1200 ;; As of Texinfo 4.6, makeinfo writes constructs like
1201 ;; \0\h[image param=value ...\h\0]
1202 ;; into the Info file for handling images.
1205 whitespace separated list of KEY=VALUE pairs. If VALUE contains
1206 whitespace or double quotes, it must be quoted in double quotes and
1211 "\\s *\\([^=]+\\)=\\(?:\\([^\\s \"]+\\)\\|\\(?:\"\\(\\(?:[^\\\"]\\|\\\\[\\\\\"]\\)*\\)\"\\)\\)"
1212 parameter-string start)
1218 parameter-alist))
1219 parameter-alist))
1222 "Display images in current node."
1229 nil t)
1244 ;; Texinfo 4.7 adds cookies of the form ^@^H[NAME CONTENTS ^@^H].
1245 ;; Hide any construct of the general form ^@[^@-^_][ ... ^@[^@-^_]],
1246 ;; including one optional trailing newline.
1248 "Hide unrecognised cookies in current node."
1255 nil t)
1262 "Select the info node that point is in."
1263 ;; Bind this in case the user sets it to nil.
1266 ;; Find beginning of node.
1272 ;; Get nodename spelled as it is in the node.
1280 ;; Find the end of it, and narrow.
1283 ;; Narrow to the node contents
1295 ;; Add a new unique history item to full history list
1312 Info-current-file
1314 ") "
1316 \f
1317 ;; Go to an info node specified with a filename-and-nodename string
1318 ;; of the sort that is found in pointers in nodes.
1320 ;;;###autoload
1322 "Go to info node named NODENAME. Give just NODENAME or (FILENAME)NODENAME.
1323 If NODENAME is of the form (FILENAME)NODENAME, the node is in the Info file
1324 FILENAME; otherwise, NODENAME should be in the current Info file (or one of
1325 its sub-files).
1326 Completion is available, but only for node names in the current Info file.
1327 If FORK is non-nil (interactively with a prefix arg), show the node in
1328 a new info buffer.
1329 If FORK is a string, it is the name to use for the new buffer."
1337 nodename)
1339 ""
1352 ;; This function is used as the "completion table" while reading a node name.
1353 ;; It does completion using the alist in Info-read-node-completion-table
1354 ;; unless STRING starts with an open-paren.
1357 ;; First complete embedded file names.
1372 ;; If a file name was given, then any node is fair game.
1378 ;; Otherwise use Info-read-node-completion-table.
1393 nodename)))
1398 ;; Bind this in case the user sets it to nil.
1411 compl))))
1414 ;; If the buffer begins with a node header, process that first.
1417 ;; Now for the rest of the nodes.
1425 compl))))))))
1428 \f
1430 "If this node has been visited, restore the point value when we left."
1433 ;; Use string-equal, not equal, to ignore text props.
1439 \f
1447 "Search for REGEXP, starting from point, and select node it's found in.
1448 If DIRECTION is `backward', search in the reverse direction."
1476 ;; Hide Info file header for backward search
1488 ;; Skip node header line
1492 ;; Skip Tag Table node
1503 ;; If no subfiles, give error now.
1514 ;; Try other subfiles.
1525 ;; Find the subfile we just searched.
1527 ;; Skip that one.
1529 ;; Make a list of all following subfiles.
1530 ;; Each elt has the form (VIRT-POSITION . SUBFILENAME).
1539 list))
1543 ;; Put in forward order
1549 ;; Hide Info file header for backward search
1564 ;; Skip node header line
1568 ;; Skip Tag Table node
1595 ;; Search landed in the same node
1601 ;; Use string-equal, not equal, to ignore text props.
1606 Info-history))))))
1609 "Search for a regexp case-sensitively."
1615 "Search for next regexp from a previous `Info-search' command."
1623 "Search for REGEXP in the reverse direction."
1663 \f
1665 "Extract the value of the node-pointer named NAME.
1666 If there is none, use ERRORNAME in the error message;
1667 if ERRORNAME is nil, just return nil."
1668 ;; Bind this in case the user sets it to nil.
1682 "Return a regexp matching a node name.
1683 ALLOWEDCHARS, if non-nil, goes within [...] to make a regexp
1684 saying which chars may appear in the node name.
1685 Submatch 1 is the complete node name.
1686 Submatch 2 if non-nil is the parenthesized file name part of the node name.
1687 Submatch 3 is the local part of the node name.
1688 End of submatch 0, 1, and 3 are the same, so you can safely concat."
1695 ;;; For compatibility; other files have used this name.
1701 "Go to the next node of this node."
1706 "Go to the previous node of this node."
1711 "Go to the superior node of this node.
1712 If SAME-FILE is non-nil, do not move to a different Info file."
1729 nil t))
1735 "Go back to the last node visited."
1748 ;;;###autoload
1750 "Go to the Info directory node."
1753 \f
1755 "Go to a node with a menu of visited nodes."
1759 p)
1781 "Go to a node with table of contents of the current Info file.
1782 Table of contents is created from the tree structure of menus."
1786 p)
1816 "Insert table of contents with references to nodes."
1828 "Build table of contents from menus of Info FILE and its subfiles."
1833 default-directory))
1836 nodes subfiles)
1848 menu-items)
1857 bound))
1860 ;; Menu item line
1870 ;; Other non-empty strings in the Top node are section names
1879 nodes))
1888 subfiles)))))
1890 main-file nil))
1894 \f
1896 "Follow cross reference named FOOTNOTENAME to the node it refers to.
1897 FOOTNOTENAME may be an abbreviation of the reference name.
1898 If FORK is non-nil (interactively with a prefix arg), show the node in
1899 a new info buffer. If FORK is a string, it is the name to use for the
1900 new buffer."
1906 ;; Store end and beginning of line.
1915 ;; See if this one should be the default.
1920 ;; See if this one should be the alternate default.
1930 ;; Record as a completion and perhaps as default.
1933 ;; Don't add this string if it's a duplicate.
1936 ;; If no good default was found, try an alternate.
1939 ;; If only one cross-reference found, then make it default.
1945 "Follow reference named: (default "
1948 completions nil t)))
1962 ;; Move point to the beginning of reference if point is on reference
1972 ;; Go to the reference closest to point
1980 next-ref prev-ref))
1991 ;; We allow newline because this is also used in Info-follow-reference,
1992 ;; where the xref name might be wrapped over two lines.
1993 "Regexp that matches a menu entry name upto but not including the colon.
1994 Because of ambiguities, this should be concatenated with something like
2014 ;;; Uncomment next line to use names of cross-references in non-index nodes:
2015 ;;; (setq Info-point-loc
2016 ;;; (buffer-substring (match-beginning 0) (1- (match-beginning 1))))
2017 )
2021 ;; If the node name is the menu entry name (using `entry::').
2024 ;; No one calls this.
2025 ;;(defun Info-menu-item-sequence (list)
2026 ;; (while list
2027 ;; (Info-menu (car list))
2028 ;; (setq list (cdr list))))
2040 ;; This uses two dynamically bound variables:
2041 ;; - `Info-complete-menu-buffer' which contains the buffer in which
2042 ;; is the menu of items we're trying to complete.
2043 ;; - `Info-complete-next-re' which, if non-nil, indicates that we should
2044 ;; also look for menu items in subsequent nodes as long as those
2045 ;; nodes' names match `Info-complete-next-re'. This feature is currently
2046 ;; not used.
2047 ;; - `Info-complete-nodes' which, if non-nil, indicates that we should
2048 ;; also look for menu items in these nodes. This feature is currently
2049 ;; only used for completion in Info-index.
2051 ;; Note that `Info-complete-menu-buffer' could be current already,
2052 ;; so we want to save point.
2058 nextnode)
2067 completions)
2068 ;; Check the cache.
2076 ;; We can reuse the previous list.
2078 ;; The cache can't be used.
2083 completions))
2084 ;; Check subsequent nodes if applicable.
2092 ;; Go back to the start node (for the next completion).
2095 ;; Update the cache.
2098 Info-complete-next-re string completions
2099 Info-complete-nodes)))
2106 "Go to the node pointed to by the menu item named (or abbreviated) MENU-ITEM.
2107 The menu item should one of those listed in the current node's menu.
2108 Completion is allowed, and the default menu item is the one point is on.
2109 If FORK is non-nil (interactively with a prefix arg), show the node in
2110 a new info buffer. If FORK is a string, it is the name to use for the
2111 new buffer."
2114 ;; If point is within a menu item, use that item as the default
2117 beg
2130 Info-menu-entry-name-re
2139 default)
2142 ;; we rely on the fact that completing-read accepts an input
2143 ;; of "" even when the require-match argument is true and ""
2144 ;; is not a valid possibility
2148 ;; ask again
2151 ;; there is a problem here in that if several menu items have the same
2152 ;; name you can only go to the node of the first with this command.
2170 ;; If COUNT is nil, use the last item in the menu.
2182 nil))
2186 "Go to the node of the Nth menu item.
2187 N is the digit argument used to invoke this command."
2194 "Go to the Top node of this file."
2199 "Go to the final node in this file."
2204 ;; Go to the last node in the menu of Top.
2206 ;; If the last node in the menu is not last in pointer structure,
2207 ;; move forward until we can't go any farther.
2209 ;; Then keep moving down to last subnode, unless we reach an index.
2215 "Go forward one node, considering all nodes as forming one sequence."
2220 ;; three possibilities, in order of priority:
2221 ;; 1. next node is in a menu in this node (but not in an index)
2222 ;; 2. next node is next at same level
2223 ;; 3. next node is up and next
2228 t)
2231 t)
2233 ;; Use string-equal, not equal, to ignore text props.
2246 "Go backward one node, considering all nodes as forming one sequence."
2254 ;; Use string-equal, not equal,
2255 ;; to ignore text properties.
2260 ;; If we move back at the same level,
2261 ;; go down to find the last subnode*.
2271 "Exit Info by selecting some other buffer."
2278 "Go to the node of the next menu item."
2280 ;; Bind this in case the user sets it to nil.
2292 "Go to the node of the previous menu item."
2296 ;; Bind this in case the user sets it to nil.
2311 "Go to the next subnode or the next node, or go up a level."
2316 ;; Since we have already gone thru all the items in this menu,
2317 ;; go up to the end of this node.
2319 ;; Since logically we are done with the node with that menu,
2320 ;; move on from it.
2326 "Go to the last node, popping up a level if there is none."
2330 ;; If we go down a menu item, go to the end of the node
2331 ;; so we can scroll back through it.
2333 ;; Keep going down, as long as there are nested menu nodes.
2336 ;; If we go down a menu item, go to the end of the node
2337 ;; so we can scroll back through it.
2347 ;; If we go down a menu item, go to the end of the node
2348 ;; so we can scroll back through it.
2359 "Scroll one screenful forward in Info, considering all nodes as one sequence.
2360 Once you scroll far enough in a node that its menu appears on the screen
2361 but after point, the next scroll moves into its first subnode, unless
2362 `Info-scroll-prefer-subnodes' is nil.
2364 When you scroll past the end of a node, that goes to the next node if
2365 `Info-scroll-prefer-subnodes' is non-nil and to the first subnode otherwise;
2366 if this node has no successor, it moves to the parent node's successor,
2367 and so on. If `Info-scroll-prefer-subnodes' is non-nil and point is inside
2368 the menu of a node, it moves to subnode indicated by the following menu
2369 item. (That case won't normally result from this command, but can happen
2370 in other ways.)"
2392 "Scroll one screenful back in Info, considering all nodes as one sequence.
2393 If point is within the menu of a node, and `Info-scroll-prefer-subnodes'
2394 is non-nil, this goes to its last subnode. When you scroll past the
2395 beginning of a node, that goes to the previous node or back up to the
2396 parent node."
2410 current-point
2411 t)))))
2418 "Move cursor to the next cross-reference or menu item in the node."
2438 "Move cursor to the previous cross-reference or menu item in the node."
2455 \f
2457 "Alist of cached index node names of visited Info files.
2461 "Return a list of names of all index nodes in Info FILE.
2462 If FILE is omitted, it defaults to the current Info file.
2463 First look in a list of cached index node names. Then scan Info
2464 file and its subfiles for nodes with the index cookie. Then try
2465 to find index nodes starting from the first node in the top level
2470 ;; Skip virtual Info files
2474 ;; Find nodes with index cookie
2478 default-directory))
2479 Info-history Info-history-list Info-fontify-maximum-menu-size
2499 subfiles)))))
2501 main-file nil))
2507 nodes)
2508 ;; Find nodes with the word "Index" in the node name
2510 Info-history Info-history-list Info-fontify-maximum-menu-size
2511 nodes node)
2529 nodes)
2530 ;; If file has no index nodes, still add it to the cache
2535 "Return non-nil value if NODE is an index node.
2536 If NODE is nil, check the current Info node.
2537 If FILE is nil, check the current Info file."
2541 ;; Don't search all index nodes if request is only for the current node
2542 ;; and file is not in the cache of index nodes
2556 "Go to the first index node."
2561 ;;;###autoload
2563 "Look up a string TOPIC in the index for this file.
2564 If there are no exact matches to the specified topic, this chooses
2565 the first match which is a case-insensitive substring of a topic.
2567 Give a blank topic name to go to the Index node itself."
2583 (pattern (format "\n\\* +\\([^\n]*%s[^\n]*\\):[ \t]+\\([^\n]*\\)\\.\\(?:[ \t\n]*(line +\\([0-9]+\\))\\)?"
2592 ;; We bind Info-history to nil for internal node-switches so
2593 ;; that we don't put junk in the history. In the first
2594 ;; Info-goto-index call, above, we do update the history
2595 ;; because that is what the user's previous node choice into it.
2597 found)
2604 Info-current-node
2607 matches))
2614 ;; Here it is a feature that assoc is case-sensitive.
2644 "(`,' tries to find next)"
2648 "Move point to the place within the current node where NAME is defined."
2653 ;; Find a function definition with a return type.
2661 nil t))
2663 ;; Try again without the " <1>" makeinfo can append
2669 ;;;###autoload
2671 "Grovel indices of all known Info files on your system for STRING.
2672 Build a menu of the possible matches."
2675 (let ((pattern (format "\n\\* +\\([^\n]*%s[^\n]*\\):[ \t]+\\([^\n]+\\)\\.\\(?:[ \t\n]*(line +\\([0-9]+\\))\\)?"
2681 manuals matches node nodes)
2709 Info-history-list ohist-list)
2730 "Make command be undefined in Info."
2735 "Enter the Info tutorial."
2740 "Help-Small-Screen"
2744 "Display a brief summary of all Info commands."
2759 flag))
2762 \f
2764 "Return the token around POS.
2765 POS must be somewhere inside the token
2766 START is a regular expression which will match the
2767 beginning of the tokens delimited string
2768 ALL is a regular expression with a single
2769 parenthesized subpattern which is the token to be
2770 returned. E.g. '{\(.*\)}' would return any string
2771 enclosed in braces around POS.
2772 ERRORSTRING optional fourth argument, controls action on no match
2773 nil: return nil
2774 t: beep
2775 a string: signal an error, using that string."
2779 ;; First look for a match for START that goes across POS.
2783 ;; If we did not find one, search back for START
2784 ;; (this finds only matches that end at or before POS).
2797 nil)
2800 nil)
2806 Like \\[Info-menu], \\[Info-follow-reference], \\[Info-next], \\[Info-prev] or \\[Info-up] command, depending on where you click.
2807 At end of the node's text, moves to the next node, or up if none."
2815 "Follow a node reference near point.
2816 If point is on a reference, follow that reference. Otherwise,
2817 if point is in a menu item description, follow that menu item."
2829 t)))
2832 ;; Common subroutine.
2834 "Follow a node reference near point. Return non-nil if successful."
2843 ;; menu item: node name
2846 ;; menu item: node name or index entry
2860 node))
2861 \f
2865 nil
2874 (define-key Info-mode-map "1" 'Info-nth-menu-item)
2875 (define-key Info-mode-map "2" 'Info-nth-menu-item)
2876 (define-key Info-mode-map "3" 'Info-nth-menu-item)
2877 (define-key Info-mode-map "4" 'Info-nth-menu-item)
2878 (define-key Info-mode-map "5" 'Info-nth-menu-item)
2879 (define-key Info-mode-map "6" 'Info-nth-menu-item)
2880 (define-key Info-mode-map "7" 'Info-nth-menu-item)
2881 (define-key Info-mode-map "8" 'Info-nth-menu-item)
2882 (define-key Info-mode-map "9" 'Info-nth-menu-item)
2883 (define-key Info-mode-map "0" 'undefined)
2884 (define-key Info-mode-map "?" 'Info-summary)
2885 (define-key Info-mode-map "]" 'Info-forward-node)
2886 (define-key Info-mode-map "[" 'Info-backward-node)
2887 (define-key Info-mode-map "<" 'Info-top-node)
2888 (define-key Info-mode-map ">" 'Info-final-node)
2889 (define-key Info-mode-map "b" 'beginning-of-buffer)
2890 (define-key Info-mode-map "c" 'Info-copy-current-node-name)
2891 (define-key Info-mode-map "d" 'Info-directory)
2892 (define-key Info-mode-map "e" 'Info-edit)
2893 (define-key Info-mode-map "f" 'Info-follow-reference)
2894 (define-key Info-mode-map "g" 'Info-goto-node)
2895 (define-key Info-mode-map "h" 'Info-help)
2896 (define-key Info-mode-map "i" 'Info-index)
2897 (define-key Info-mode-map "l" 'Info-last)
2898 (define-key Info-mode-map "L" 'Info-history)
2899 (define-key Info-mode-map "m" 'Info-menu)
2900 (define-key Info-mode-map "n" 'Info-next)
2901 (define-key Info-mode-map "p" 'Info-prev)
2902 (define-key Info-mode-map "q" 'Info-exit)
2903 (define-key Info-mode-map "s" 'Info-search)
2904 (define-key Info-mode-map "S" 'Info-search-case-sensitively)
2905 ;; For consistency with Rmail.
2906 (define-key Info-mode-map "\M-s" 'Info-search)
2907 (define-key Info-mode-map "\M-n" 'clone-buffer)
2908 (define-key Info-mode-map "t" 'Info-top-node)
2909 (define-key Info-mode-map "T" 'Info-toc)
2910 (define-key Info-mode-map "u" 'Info-up)
2911 ;; For consistency with dired-copy-filename-as-kill.
2912 (define-key Info-mode-map "w" 'Info-copy-current-node-name)
2913 (define-key Info-mode-map "," 'Info-index-next)
2915 (define-key Info-mode-map [mouse-2] 'Info-mouse-follow-nearest-node)
2916 )
2918 (defun Info-check-pointer (item)
2919 "Non-nil if ITEM is present in this node."
2920 (condition-case nil
2921 (Info-extract-pointer item)
2922 (error nil)))
2924 (easy-menu-define
2925 Info-mode-menu Info-mode-map
2926 "Menu for info files."
2927 '("Info"
2928 ["Up" Info-up :active (Info-check-pointer "up")
2929 :help "Go up in the Info tree"]
2930 ["Next" Info-next :active (Info-check-pointer "next")
2931 :help "Go to the next node"]
2932 ["Previous" Info-prev :active (Info-check-pointer "prev[ious]*")
2933 :help "Go to the previous node"]
2934 ["Backward" Info-backward-node
2935 :help "Go backward one node, considering all as a sequence"]
2936 ["Forward" Info-forward-node
2937 :help "Go forward one node, considering all as a sequence"]
2938 ["Beginning" beginning-of-buffer
2939 :help "Go to beginning of this node"]
2940 ["Top" Info-top-node
2941 :help "Go to top node of file"]
2942 ["Final Node" Info-final-node
2943 :help "Go to final node in this file"]
2944 ("Menu Item" ["You should never see this" report-emacs-bug t])
2945 ("Reference" ["You should never see this" report-emacs-bug t])
2946 ["Search..." Info-search
2947 :help "Search for regular expression in this Info file"]
2948 ["Search Case-Sensitively..." Info-search-case-sensitively
2949 :help "Search for regular expression case sensitively"]
2950 ["Search Next" Info-search-next
2951 :help "Search for another occurrence of regular expression"]
2952 ["Go to Node..." Info-goto-node
2953 :help "Go to a named node"]
2954 ["Last" Info-last :active Info-history
2955 :help "Go to the last node you were at"]
2956 ["History" Info-history :active Info-history-list
2957 :help "Go to menu of visited nodes"]
2958 ["Table of Contents" Info-toc
2959 :help "Go to table of contents"]
2960 ("Index..."
2961 ["Lookup a String" Info-index
2962 :help "Look for a string in the index items"]
2963 ["Next Matching Item" Info-index-next
2964 :help "Look for another occurrence of previous item"]
2965 ["Lookup a string in all indices" info-apropos
2966 :help "Look for a string in the indices of all manuals"])
2967 ["Edit" Info-edit :help "Edit contents of this node"
2968 :active Info-enable-edit]
2969 ["Copy Node Name" Info-copy-current-node-name
2970 :help "Copy the name of the current node into the kill ring"]
2971 ["Clone Info buffer" clone-buffer
2972 :help "Create a twin copy of the current Info buffer."]
2973 ["Exit" Info-exit :help "Stop reading Info"]))
2976 (defvar info-tool-bar-map
2977 (if (display-graphic-p)
2978 (let ((map (make-sparse-keymap)))
2979 (tool-bar-local-item-from-menu 'Info-exit "close" map Info-mode-map)
2980 (tool-bar-local-item-from-menu 'Info-prev "left_arrow" map Info-mode-map)
2981 (tool-bar-local-item-from-menu 'Info-next "right_arrow" map Info-mode-map)
2982 (tool-bar-local-item-from-menu 'Info-up "up_arrow" map Info-mode-map)
2983 (tool-bar-local-item-from-menu 'Info-last "undo" map Info-mode-map)
2984 (tool-bar-local-item-from-menu 'Info-top-node "home" map Info-mode-map)
2985 (tool-bar-local-item-from-menu 'Info-index "index" map Info-mode-map)
2986 (tool-bar-local-item-from-menu 'Info-goto-node "jump_to" map Info-mode-map)
2987 (tool-bar-local-item-from-menu 'Info-search "search" map Info-mode-map)
2988 map)))
2990 (defvar Info-menu-last-node nil)
2991 ;; Last node the menu was created for.
2992 ;; Value is a list, (FILE-NAME NODE-NAME).
2994 (defun Info-menu-update ()
2995 "Update the Info menu for the current node."
2996 (condition-case nil
2997 (if (or (not (eq major-mode 'Info-mode))
2998 (equal (list Info-current-file Info-current-node)
2999 Info-menu-last-node))
3000 ()
3001 ;; Update menu menu.
3002 (let* ((Info-complete-menu-buffer (current-buffer))
3003 (items (nreverse (condition-case nil
3004 (Info-complete-menu-item "" nil t)
3005 (error nil))))
3006 entries current
3007 (number 0))
3008 (while (and items (< number 9))
3009 (setq current (car items)
3010 items (cdr items)
3011 number (1+ number))
3012 (setq entries (cons `[,current
3013 (Info-menu ,current)
3014 :keys ,(format "%d" number)]
3015 entries)))
3016 (if items
3017 (setq entries (cons ["Other..." Info-menu t] entries)))
3018 (or entries
3019 (setq entries (list ["No menu" nil nil] nil :active)))
3020 (easy-menu-change '("Info") "Menu Item" (nreverse entries)))
3021 ;; Update reference menu. Code stolen from `Info-follow-reference'.
3022 (let ((items nil)
3023 str i entries current
3024 (number 0)
3025 (case-fold-search t))
3026 (save-excursion
3027 (goto-char (point-min))
3029 (setq str (match-string 1))
3030 (setq i 0)
3032 (setq str (concat (substring str 0 i) " "
3033 (substring str (match-end 0))))
3034 (setq i (1+ i)))
3035 (setq items
3036 (cons str items))))
3037 (while (and items (< number 9))
3038 (setq current (car items)
3039 items (cdr items)
3040 number (1+ number))
3041 (setq entries (cons `[,current
3042 (Info-follow-reference ,current)
3043 t]
3044 entries)))
3045 (if items
3046 (setq entries (cons ["Other..." Info-follow-reference t]
3047 entries)))
3048 (or entries
3049 (setq entries (list ["No references" nil nil] nil :active)))
3050 (easy-menu-change '("Info") "Reference" (nreverse entries)))
3051 ;; Update last seen node.
3052 (setq Info-menu-last-node (list Info-current-file Info-current-node)))
3053 ;; Try to avoid entering infinite beep mode in case of errors.
3054 (error (ding))))
3056 \f
3057 (defun Info-copy-current-node-name (&optional arg)
3058 "Put the name of the current info node into the kill ring.
3059 The name of the info file is prepended to the node name in parentheses.
3060 With a zero prefix arg, put the name inside a function call to `info'."
3061 (interactive "P")
3062 (unless Info-current-node
3063 (error "No current info node"))
3064 (let ((node (concat "(" (file-name-nondirectory
3065 (or (and (stringp Info-current-file)
3066 Info-current-file)
3067 buffer-file-name
3068 ""))
3069 ")" Info-current-node)))
3070 (if (zerop (prefix-numeric-value arg))
3072 (kill-new node)
3073 (message "%s" node)))
3075 \f
3076 ;; Info mode is suitable only for specially formatted data.
3077 (put 'Info-mode 'mode-class 'special)
3078 (put 'Info-mode 'no-clone-indirect t)
3080 (defun Info-mode ()
3081 "Info mode provides commands for browsing through the Info documentation tree.
3083 one topic and contains references to other nodes which discuss related
3084 topics. Info has commands to follow the references and show you other nodes.
3090 Selecting other nodes:
3092 Follow a node reference you click on.
3093 This works with menu items, cross references, and
3095 \\[Info-follow-nearest-node] Follow a node reference near point, like \\[Info-mouse-follow-nearest-node].
3100 Picking a menu item causes another node to be selected.
3111 \\[Info-index-next] (comma) Move to the next match from a previous \\<Info-mode-map>\\[Info-index] command.
3114 Moving within a node:
3116 Once you scroll far enough in a node that its menu appears on the
3117 screen but after point, the next scroll moves into its first
3118 subnode. When after all menu items (or if there is no menu),
3119 move up to the parent node.
3121 already visible, try to go to the previous menu entry, or up
3122 if there is none.
3125 Advanced commands:
3129 1 .. 9 Pick first ... ninth item in node's menu.
3130 Every third `*' is highlighted to help pick the right number.
3132 You may include a filename as well, as (FILENAME)NODENAME.
3136 and select the node in which the next occurrence is found.
3137 \\[Info-search-case-sensitively] Search through this Info file for specified regexp case-sensitively.
3142 (kill-all-local-variables)
3143 (setq major-mode 'Info-mode)
3144 (setq mode-name "Info")
3145 (setq tab-width 8)
3146 (use-local-map Info-mode-map)
3147 (add-hook 'activate-menubar-hook 'Info-menu-update nil t)
3148 (set-syntax-table text-mode-syntax-table)
3149 (setq local-abbrev-table text-mode-abbrev-table)
3150 (setq case-fold-search t)
3151 (setq buffer-read-only t)
3152 (make-local-variable 'Info-current-file)
3153 (make-local-variable 'Info-current-subfile)
3154 (make-local-variable 'Info-current-node)
3155 (make-local-variable 'Info-tag-table-marker)
3156 (setq Info-tag-table-marker (make-marker))
3157 (make-local-variable 'Info-tag-table-buffer)
3158 (setq Info-tag-table-buffer nil)
3159 (make-local-variable 'Info-history)
3160 (make-local-variable 'Info-index-alternatives)
3161 (setq header-line-format
3162 (if Info-use-header-line
3163 '(:eval (get-text-property (point-min) 'header-line))
3164 nil)) ; so the header line isn't displayed
3165 (set (make-local-variable 'tool-bar-map) info-tool-bar-map)
3166 ;; This is for the sake of the invisible text we use handling titles.
3167 (make-local-variable 'line-move-ignore-invisible)
3168 (setq line-move-ignore-invisible t)
3169 (make-local-variable 'desktop-save-buffer)
3170 (setq desktop-save-buffer 'Info-desktop-buffer-misc-data)
3171 (add-hook 'clone-buffer-hook 'Info-clone-buffer-hook nil t)
3172 (add-hook 'change-major-mode-hook 'font-lock-defontify nil t)
3173 (set (make-local-variable 'isearch-search-fun-function)
3174 'Info-isearch-search)
3175 (set (make-local-variable 'isearch-wrap-function)
3176 'Info-isearch-wrap)
3177 (set (make-local-variable 'isearch-push-state-function)
3178 'Info-isearch-push-state)
3179 (set (make-local-variable 'search-whitespace-regexp)
3180 Info-search-whitespace-regexp)
3181 (Info-set-mode-line)
3182 (run-hooks 'Info-mode-hook))
3184 (defun Info-clone-buffer-hook ()
3185 (when (bufferp Info-tag-table-buffer)
3186 (setq Info-tag-table-buffer
3187 (with-current-buffer Info-tag-table-buffer (clone-buffer))))
3188 (let ((m Info-tag-table-marker))
3189 (when (markerp m)
3190 (setq Info-tag-table-marker
3191 (if (and (marker-position m) (bufferp Info-tag-table-buffer))
3192 (with-current-buffer Info-tag-table-buffer
3193 (copy-marker (marker-position m)))
3194 (make-marker))))))
3196 (defvar Info-edit-map (let ((map (make-sparse-keymap)))
3197 (set-keymap-parent map text-mode-map)
3198 (define-key map "\C-c\C-c" 'Info-cease-edit)
3199 map)
3200 "Local keymap used within `e' command of Info.")
3202 ;; Info-edit mode is suitable only for specially formatted data.
3203 (put 'Info-edit-mode 'mode-class 'special)
3205 (defun Info-edit-mode ()
3206 "Major mode for editing the contents of an Info node.
3207 Like text mode with the addition of `Info-cease-edit'
3208 which returns to Info mode for browsing.
3210 (use-local-map Info-edit-map)
3211 (setq major-mode 'Info-edit-mode)
3212 (setq mode-name "Info Edit")
3213 (kill-local-variable 'mode-line-buffer-identification)
3214 (setq buffer-read-only nil)
3215 (force-mode-line-update)
3216 (buffer-enable-undo (current-buffer))
3217 (run-hooks 'Info-edit-mode-hook))
3219 (defun Info-edit ()
3220 "Edit the contents of this Info node.
3221 Allowed only if variable `Info-enable-edit' is non-nil."
3222 (interactive)
3223 (or Info-enable-edit
3224 (error "Editing info nodes is not enabled"))
3225 (Info-edit-mode)
3226 (message "%s" (substitute-command-keys
3229 (defun Info-cease-edit ()
3230 "Finish editing Info node; switch back to Info proper."
3231 (interactive)
3232 ;; Do this first, so nothing has changed if user C-g's at query.
3233 (and (buffer-modified-p)
3234 (y-or-n-p "Save the file? ")
3235 (save-buffer))
3236 (use-local-map Info-mode-map)
3237 (setq major-mode 'Info-mode)
3238 (setq mode-name "Info")
3239 (Info-set-mode-line)
3240 (setq buffer-read-only t)
3241 (force-mode-line-update)
3242 (and (marker-position Info-tag-table-marker)
3243 (buffer-modified-p)
3244 (message "Tags may have changed. Use Info-tagify if necessary")))
3245 \f
3246 (defvar Info-file-list-for-emacs
3247 '("ediff" "eudc" "forms" "gnus" "info" ("Info" . "info") ("mh" . "mh-e")
3248 "sc" "message" ("dired" . "dired-x") "viper" "vip" "idlwave"
3249 ("c" . "ccmode") ("c++" . "ccmode") ("objc" . "ccmode")
3250 ("java" . "ccmode") ("idl" . "ccmode") ("pike" . "ccmode")
3251 ("skeleton" . "autotype") ("auto-insert" . "autotype")
3252 ("copyright" . "autotype") ("executable" . "autotype")
3253 ("time-stamp" . "autotype") ("quickurl" . "autotype")
3254 ("tempo" . "autotype") ("hippie-expand" . "autotype")
3255 ("cvs" . "pcl-cvs") ("ada" . "ada-mode") "calc"
3256 ("calcAlg" . "calc") ("calcDigit" . "calc") ("calcVar" . "calc")
3257 "ebrowse" "eshell" "cl" "reftex" "speedbar" "widget" "woman"
3258 ("mail-header" . "emacs-mime") ("mail-content" . "emacs-mime")
3259 ("mail-encode" . "emacs-mime") ("mail-decode" . "emacs-mime")
3260 ("rfc2045" . "emacs-mime")
3261 ("rfc2231" . "emacs-mime") ("rfc2047" . "emacs-mime")
3262 ("rfc2045" . "emacs-mime") ("rfc1843" . "emacs-mime")
3263 ("ietf-drums" . "emacs-mime") ("quoted-printable" . "emacs-mime")
3264 ("binhex" . "emacs-mime") ("uudecode" . "emacs-mime")
3265 ("mailcap" . "emacs-mime") ("mm" . "emacs-mime")
3266 ("mml" . "emacs-mime"))
3267 "List of Info files that describe Emacs commands.
3268 An element can be a file name, or a list of the form (PREFIX . FILE)
3269 where PREFIX is a name prefix and FILE is the file to look in.
3270 If the element is just a file name, the file name also serves as the prefix.")
3272 (defun Info-find-emacs-command-nodes (command)
3273 "Return a list of locations documenting COMMAND.
3274 The `info-file' property of COMMAND says which Info manual to search.
3275 If COMMAND has no property, the variable `Info-file-list-for-emacs'
3276 defines heuristics for which Info manual to try.
3277 The locations are of the format used in `Info-history', i.e.
3278 \(FILENAME NODENAME BUFFERPOS\), where BUFFERPOS is the line number
3279 in the first element of the returned list (which is treated specially in
3280 `Info-goto-emacs-command-node'), and 0 for the rest elements of a list."
3281 (let ((where '()) line-number
3285 (info-file "emacs")) ;default
3286 ;; Determine which info file this command is documented in.
3287 (if (get command 'info-file)
3288 (setq info-file (get command 'info-file))
3289 ;; If it doesn't say explicitly, test its name against
3290 ;; various prefixes that we know.
3291 (let ((file-list Info-file-list-for-emacs))
3292 (while file-list
3293 (let* ((elt (car file-list))
3294 (name (if (consp elt)
3295 (car elt)
3296 elt))
3297 (file (if (consp elt) (cdr elt) elt))
3298 (case-fold-search nil)
3301 (if (string-match regexp (symbol-name command))
3302 (setq info-file file file-list nil))
3303 (setq file-list (cdr file-list))))))
3304 (Info-find-node info-file "Top")
3307 (error "Info file `%s' appears to lack an index" info-file))
3308 (goto-char (match-beginning 1))
3309 ;; Bind Info-history to nil, to prevent the index nodes from
3310 ;; getting into the node history.
3311 (let ((Info-history nil)
3312 (Info-history-list nil)
3313 node (nodes (Info-index-nodes)))
3314 (Info-goto-node (car nodes))
3315 (while
3316 (progn
3317 (goto-char (point-min))
3318 (while (re-search-forward cmd-desc nil t)
3319 (setq where
3320 (cons (list Info-current-file
3321 (match-string-no-properties 2)
3322 0)
3323 where))
3324 (setq line-number (and (match-beginning 3)
3325 (string-to-number (match-string 3)))))
3326 (and (setq nodes (cdr nodes) node (car nodes))))
3327 (Info-goto-node node)))
3328 (if (and line-number where)
3329 (cons (list (nth 0 (car where)) (nth 1 (car where)) line-number)
3330 (cdr where))
3331 where)))
3333 ;;;###autoload (put 'Info-goto-emacs-command-node 'info-file "emacs")
3334 ;;;###autoload
3335 (defun Info-goto-emacs-command-node (command)
3336 "Go to the Info node in the Emacs manual for command COMMAND.
3337 The command is found by looking up in Emacs manual's indices
3338 or in another manual found via COMMAND's `info-file' property or
3339 the variable `Info-file-list-for-emacs'.
3340 COMMAND must be a symbol or string."
3341 (interactive "CFind documentation for command: ")
3342 ;; If command is given as a string, convert it to a symbol.
3343 (if (stringp command)
3344 (setq command (intern command)))
3345 (or (commandp command)
3346 (signal 'wrong-type-argument (list 'commandp command)))
3347 (let ((where (Info-find-emacs-command-nodes command)))
3348 (if where
3349 (let ((num-matches (length where)))
3350 ;; Get Info running, and pop to it in another window.
3351 (save-window-excursion
3352 (info))
3353 (or (eq major-mode 'Info-mode) (pop-to-buffer "*info*"))
3354 ;; Bind Info-history to nil, to prevent the last Index node
3355 ;; visited by Info-find-emacs-command-nodes from being
3356 ;; pushed onto the history.
3357 (let ((Info-history nil) (Info-history-list nil)
3358 (line-number (nth 2 (car where))))
3359 (Info-find-node (nth 0 (car where)) (nth 1 (car where)))
3360 (if (and (integerp line-number) (> line-number 0))
3361 (forward-line (1- line-number))))
3362 (if (> num-matches 1)
3363 (progn
3364 ;; (car where) will be pushed onto Info-history
3365 ;; when/if they go to another node. Put the other
3366 ;; nodes that were found on the history.
3367 (setq Info-history (nconc (cdr where) Info-history))
3368 (message "Found %d other entr%s. Use %s to see %s."
3369 (1- num-matches)
3370 (if (> num-matches 2) "ies" "y")
3372 (if (> num-matches 2) "them" "it")))))
3373 (error "Couldn't find documentation for %s" command))))
3375 ;;;###autoload (put 'Info-goto-emacs-key-command-node 'info-file "emacs")
3376 ;;;###autoload
3377 (defun Info-goto-emacs-key-command-node (key)
3378 "Go to the node in the Emacs manual which describes the command bound to KEY.
3379 KEY is a string.
3380 Interactively, if the binding is `execute-extended-command', a command is read.
3381 The command is found by looking up in Emacs manual's indices
3382 or in another manual found via COMMAND's `info-file' property or
3383 the variable `Info-file-list-for-emacs'."
3384 (interactive "kFind documentation for key: ")
3385 (let ((command (key-binding key)))
3386 (cond ((null command)
3387 (message "%s is undefined" (key-description key)))
3388 ((and (interactive-p)
3389 (eq command 'execute-extended-command))
3390 (Info-goto-emacs-command-node
3391 (read-command "Find documentation for command: ")))
3392 (t
3393 (Info-goto-emacs-command-node command)))))
3394 \f
3395 (defface Info-title-1-face
3396 '((((type tty pc) (class color)) :foreground "yellow" :weight bold)
3397 (t :height 1.2 :inherit Info-title-2-face))
3398 "Face for Info titles at level 1."
3399 :group 'info)
3401 (defface Info-title-2-face
3402 '((((type tty pc) (class color)) :foreground "lightblue" :weight bold)
3403 (t :height 1.2 :inherit Info-title-3-face))
3404 "Face for Info titles at level 2."
3405 :group 'info)
3407 (defface Info-title-3-face
3408 '((((type tty pc) (class color)) :weight bold)
3409 (t :height 1.2 :inherit Info-title-4-face))
3410 "Face for Info titles at level 3."
3411 :group 'info)
3413 (defface Info-title-4-face
3414 '((((type tty pc) (class color)) :weight bold)
3415 (t :weight bold :inherit variable-pitch))
3416 "Face for Info titles at level 4."
3417 :group 'info)
3419 (defface info-menu-header
3420 '((((type tty pc))
3421 :underline t
3422 :weight bold)
3423 (t
3424 :inherit variable-pitch
3425 :weight bold))
3426 "Face for headers in Info menus."
3427 :group 'info)
3429 (defun Info-escape-percent (string)
3430 "Double all occurrences of `%' in STRING.
3432 Return a new string with all `%' characters replaced by `%%'.
3433 Preserve text properties."
3434 (let ((start 0)
3435 (end (length string))
3436 mb me m matches)
3437 (save-match-data
3438 (while (and (< start end) (string-match "%" string start))
3439 (setq mb (match-beginning 0)
3440 me (1+ mb)
3441 m (substring string mb me)
3442 matches (cons m
3443 (cons m
3444 (cons (substring string start mb)
3445 matches)))
3446 start me))
3447 (push (substring string start end) matches)
3448 (apply #'concat (nreverse matches)))))
3450 (defvar Info-next-link-keymap
3451 (let ((keymap (make-sparse-keymap)))
3452 (define-key keymap [header-line mouse-1] 'Info-next)
3453 (define-key keymap [header-line mouse-2] 'Info-next)
3454 (define-key keymap [header-line down-mouse-1] 'ignore)
3455 (define-key keymap [mouse-2] 'Info-next)
3456 keymap)
3457 "Keymap to put on the Next link in the text or the header line.")
3459 (defvar Info-prev-link-keymap
3460 (let ((keymap (make-sparse-keymap)))
3461 (define-key keymap [header-line mouse-1] 'Info-prev)
3462 (define-key keymap [header-line mouse-2] 'Info-prev)
3463 (define-key keymap [header-line down-mouse-1] 'ignore)
3464 (define-key keymap [mouse-2] 'Info-prev)
3465 keymap)
3466 "Keymap to put on the Prev link in the text or the header line.")
3469 (defvar Info-up-link-keymap
3470 (let ((keymap (make-sparse-keymap)))
3471 (define-key keymap [header-line mouse-1] 'Info-up)
3472 (define-key keymap [header-line mouse-2] 'Info-up)
3473 (define-key keymap [header-line down-mouse-1] 'ignore)
3474 (define-key keymap [mouse-2] 'Info-up)
3475 keymap)
3476 "Keymap to put on the Up link in the text or the header line.")
3478 (defun Info-fontify-node ()
3479 "Fontify the node."
3480 (save-excursion
3481 (let* ((inhibit-read-only t)
3482 (case-fold-search t)
3483 paragraph-markers
3484 (not-fontified-p ; the node hasn't already been fontified
3485 (not (let ((where (next-property-change (point-min))))
3486 (and where (not (= where (point-max)))))))
3487 (fontify-visited-p ; visited nodes need to be re-fontified
3488 (and Info-fontify-visited-nodes
3489 ;; Don't take time to refontify visited nodes in huge nodes
3490 (< (- (point-max) (point-min)) Info-fontify-maximum-menu-size)))
3491 rbeg rend)
3493 ;; Fontify header line
3494 (goto-char (point-min))
3496 (goto-char (match-end 0))
3498 (goto-char (match-end 0))
3499 (let* ((nbeg (match-beginning 2))
3500 (nend (match-end 2))
3501 (tbeg (match-beginning 1))
3502 (tag (match-string 1)))
3503 (if (string-equal tag "Node")
3504 (put-text-property nbeg nend 'font-lock-face 'info-header-node)
3505 (put-text-property nbeg nend 'font-lock-face 'info-header-xref)
3506 (put-text-property tbeg nend 'mouse-face 'highlight)
3507 (put-text-property tbeg nend
3508 'help-echo
3509 (concat "Go to node "
3510 (buffer-substring nbeg nend)))
3511 ;; Always set up the text property keymap.
3512 ;; It will either be used in the buffer
3513 ;; or copied in the header line.
3514 (put-text-property tbeg nend 'keymap
3515 (cond
3516 ((equal tag "Prev") Info-prev-link-keymap)
3517 ((equal tag "Next") Info-next-link-keymap)
3518 ((equal tag "Up") Info-up-link-keymap))))))
3519 (when Info-use-header-line
3520 (goto-char (point-min))
3521 (let ((header-end (line-end-position))
3522 header)
3523 ;; If we find neither Next: nor Prev: link, show the entire
3524 ;; node header. Otherwise, don't show the File: and Node:
3525 ;; parts, to avoid wasting precious space on information that
3526 ;; is available in the mode line.
3527 (if (re-search-forward
3529 header-end t)
3530 (progn
3531 (goto-char (match-beginning 1))
3532 (setq header (buffer-substring (point) header-end)))
3534 (setq header
3535 (concat "No next, prev or up links -- "
3536 (buffer-substring (point) header-end)))
3537 (setq header (buffer-substring (point) header-end))))
3538 (put-text-property (point-min) (1+ (point-min))
3539 'header-line (Info-escape-percent header))
3540 ;; Hide the part of the first line
3541 ;; that is in the header, if it is just part.
3542 (unless (bobp)
3543 ;; Hide the punctuation at the end, too.
3545 (put-text-property (point) header-end 'invisible t)))))
3547 ;; Fontify titles
3548 (goto-char (point-min))
3549 (when not-fontified-p
3551 nil t)
3552 (let* ((c (preceding-char))
3553 (face
3554 (cond ((= c ?*) 'Info-title-1-face)
3555 ((= c ?=) 'Info-title-2-face)
3556 ((= c ?-) 'Info-title-3-face)
3557 (t 'Info-title-4-face))))
3558 (put-text-property (match-beginning 1) (match-end 1)
3559 'font-lock-face face))
3560 ;; This is a serious problem for trying to handle multiple
3561 ;; frame types at once. We want this text to be invisible
3562 ;; on frames that can display the font above.
3563 (when (memq (framep (selected-frame)) '(x pc w32 mac))
3564 (add-text-properties (1- (match-beginning 2)) (match-end 2)
3565 '(invisible t front-sticky nil rear-nonsticky t)))))
3567 ;; Fontify cross references
3568 (goto-char (point-min))
3569 (when (or not-fontified-p fontify-visited-p)
3570 (while (re-search-forward "\\(\\*Note[ \n\t]+\\)\\([^:]*\\)\\(:[ \t]*\\([^.,:(]*\\)\\(\\(([^)]*)\\)[^.,:]*\\)?[,:]?\n?\\)" nil t)
3571 (let ((start (match-beginning 0))
3572 (next (point))
3573 other-tag)
3574 (when not-fontified-p
3575 (when Info-hide-note-references
3576 (when (not (eq Info-hide-note-references 'hide))
3577 ;; *Note is often used where *note should have been
3578 (goto-char start)
3579 (skip-syntax-backward " ")
3580 (setq other-tag
3581 (cond ((memq (char-before) '(nil ?\. ?! ??))
3582 "See ")
3583 ((memq (char-before) '(?\, ?\; ?\: ?-))
3584 "see ")
3585 ((memq (char-before) '(?\( ?\[ ?\{))
3586 ;; Check whether the paren is preceded by
3587 ;; an end of sentence
3588 (skip-syntax-backward " (")
3589 (if (memq (char-before) '(nil ?\. ?! ??))
3590 "See "
3591 "see "))
3593 "See "))))
3594 (goto-char next)
3595 (add-text-properties
3596 (match-beginning 1)
3597 (or (save-match-data
3599 (let ((start1 (match-beginning 1)))
3601 (+ start1 (match-beginning 0)))))
3602 (match-end 1))
3603 (if other-tag
3604 `(display ,other-tag front-sticky nil rear-nonsticky t)
3605 '(invisible t front-sticky nil rear-nonsticky t))))
3606 (add-text-properties
3607 (match-beginning 2) (match-end 2)
3608 (list
3609 'help-echo (if (or (match-end 5)
3610 (not (equal (match-string 4) "")))
3611 (concat "mouse-2: go to " (or (match-string 5)
3612 (match-string 4)))
3613 "mouse-2: go to this node")
3614 'mouse-face 'highlight)))
3615 (when (or not-fontified-p fontify-visited-p)
3616 (setq rbeg (match-beginning 2)
3617 rend (match-end 2))
3618 (put-text-property
3619 rbeg rend
3620 'font-lock-face
3621 ;; Display visited nodes in a different face
3622 (if (and Info-fontify-visited-nodes
3623 (save-match-data
3624 (let* ((node (replace-regexp-in-string
3626 (replace-regexp-in-string
3628 (or (match-string 5)
3629 (and (not (equal (match-string 4) ""))
3630 (match-string 4))
3631 (match-string 2)))))
3632 (file (file-name-nondirectory
3633 Info-current-file))
3634 (hl Info-history-list)
3635 res)
3637 (setq file (file-name-nondirectory
3638 (match-string 1 node))
3639 node (if (equal (match-string 2 node) "")
3640 "Top"
3641 (match-string 2 node))))
3642 (while hl
3643 (if (and (string-equal node (nth 1 (car hl)))
3644 (string-equal file
3645 (file-name-nondirectory
3646 (nth 0 (car hl)))))
3647 (setq res (car hl) hl nil)
3648 (setq hl (cdr hl))))
3649 res))) 'info-xref-visited 'info-xref))
3650 ;; For multiline ref, unfontify newline and surrounding whitespace
3651 (save-excursion
3652 (goto-char rbeg)
3653 (save-match-data
3655 (remove-text-properties (match-beginning 0)
3656 (match-end 0)
3657 '(font-lock-face t))))))
3658 (when not-fontified-p
3659 (when (memq Info-hide-note-references '(t hide))
3660 (add-text-properties (match-beginning 3) (match-end 3)
3661 '(invisible t front-sticky nil rear-nonsticky t))
3662 ;; Unhide the file name of the external reference in parens
3663 (if (and (match-string 6) (not (eq Info-hide-note-references 'hide)))
3664 (remove-text-properties (match-beginning 6) (match-end 6)
3665 '(invisible t front-sticky nil rear-nonsticky t)))
3666 ;; Unhide newline because hidden newlines cause too long lines
3667 (save-match-data
3668 (let ((beg3 (match-beginning 3))
3669 (end3 (match-end 3)))
3671 (not (save-match-data
3672 (save-excursion
3673 (goto-char (1+ end3))
3674 (looking-at "[.)]*$")))))
3675 (remove-text-properties (+ beg3 (match-beginning 0))
3676 (+ beg3 (match-end 0))
3677 '(invisible t front-sticky nil rear-nonsticky t))))))
3678 (when (and Info-refill-paragraphs Info-hide-note-references)
3679 (push (set-marker (make-marker) start)
3680 paragraph-markers))))))
3682 ;; Refill paragraphs (experimental feature)
3683 (when (and not-fontified-p
3684 Info-refill-paragraphs
3685 paragraph-markers)
3686 (let ((fill-nobreak-invisible t)
3687 (fill-individual-varying-indent nil)
3690 (adaptive-fill-mode nil))
3691 (goto-char (point-max))
3692 (while paragraph-markers
3693 (let ((m (car paragraph-markers)))
3694 (setq paragraph-markers (cdr paragraph-markers))
3695 (when (< m (point))
3696 (goto-char m)
3697 (beginning-of-line)
3698 (let ((beg (point)))
3699 (when (zerop (forward-paragraph))
3700 (fill-individual-paragraphs beg (point) nil nil)
3701 (goto-char beg))))
3702 (set-marker m nil)))))
3704 ;; Fontify menu items
3705 (goto-char (point-min))
3706 (when (and (or not-fontified-p fontify-visited-p)
3708 (not (Info-index-node))
3709 ;; Don't take time to annotate huge menus
3710 (< (- (point-max) (point)) Info-fontify-maximum-menu-size))
3711 (let ((n 0)
3712 cont)
3713 (while (re-search-forward
3716 nil t)
3717 (when not-fontified-p
3718 (setq n (1+ n))
3719 (if (and (<= n 9) (zerop (% n 3))) ; visual aids to help with 1-9 keys
3720 (put-text-property (match-beginning 0)
3721 (1+ (match-beginning 0))
3722 'font-lock-face 'info-menu-5)))
3723 (when not-fontified-p
3724 (add-text-properties
3725 (match-beginning 1) (match-end 1)
3726 (list
3727 'help-echo (if (match-end 3)
3728 (concat "mouse-2: go to " (match-string 3))
3729 "mouse-2: go to this node")
3730 'mouse-face 'highlight)))
3731 (when (or not-fontified-p fontify-visited-p)
3732 (add-text-properties
3733 (match-beginning 1) (match-end 1)
3734 (list
3735 'font-lock-face
3736 ;; Display visited menu items in a different face
3737 (if (and Info-fontify-visited-nodes
3738 (save-match-data
3739 (let ((node (if (equal (match-string 3) "")
3740 (match-string 1)
3741 (match-string 3)))
3742 (file (file-name-nondirectory Info-current-file))
3743 (hl Info-history-list)
3744 res)
3746 (setq file (file-name-nondirectory
3747 (match-string 1 node))
3748 node (if (equal (match-string 2 node) "")
3749 "Top"
3750 (match-string 2 node))))
3751 (while hl
3752 (if (and (string-equal node (nth 1 (car hl)))
3753 (string-equal file
3754 (file-name-nondirectory
3755 (nth 0 (car hl)))))
3756 (setq res (car hl) hl nil)
3757 (setq hl (cdr hl))))
3758 res))) 'info-xref-visited 'info-xref))))
3759 (when (and not-fontified-p (memq Info-hide-note-references '(t hide)))
3760 (put-text-property (match-beginning 2) (1- (match-end 6))
3761 'invisible t)
3762 ;; Unhide the file name in parens
3763 (if (and (match-end 4) (not (eq (char-after (match-end 4)) ?.)))
3764 (remove-text-properties (match-beginning 4) (match-end 4)
3765 '(invisible t)))
3766 ;; We need a stretchable space like :align-to but with
3767 ;; a minimum value.
3768 (put-text-property (1- (match-end 6)) (match-end 6) 'display
3769 (if (>= 22 (- (match-end 1)
3770 (match-beginning 0)))
3771 '(space :align-to 24)
3772 '(space :width 2)))
3773 (setq cont (looking-at "."))
3774 (while (and (= (forward-line 1) 0)
3776 (put-text-property (match-beginning 1) (1- (match-end 1))
3777 'invisible t)
3778 (put-text-property (1- (match-end 1)) (match-end 1)
3779 'display
3780 (if cont
3781 '(space :align-to 26)
3782 '(space :align-to 24)))
3783 (setq cont t))))))
3785 ;; Fontify menu headers
3786 ;; Add the face `info-menu-header' to any header before a menu entry
3787 (goto-char (point-min))
3789 (put-text-property (match-beginning 0) (match-end 0)
3790 'font-lock-face 'info-menu-header)
3792 (put-text-property (match-beginning 1) (match-end 1)
3793 'font-lock-face 'info-menu-header)))
3795 ;; Hide index line numbers
3796 (goto-char (point-min))
3797 (when (and not-fontified-p (Info-index-node))
3799 (put-text-property (match-beginning 0) (match-end 0)
3800 'invisible t)))
3802 ;; Fontify http and ftp references
3803 (goto-char (point-min))
3804 (when not-fontified-p
3806 (add-text-properties (match-beginning 0) (match-end 0)
3807 '(font-lock-face info-xref
3808 mouse-face highlight
3809 help-echo "mouse-2: go to this URL"))))
3811 (set-buffer-modified-p nil))))
3812 \f
3814 ;; When an Info buffer is killed, make sure the associated tags buffer
3815 ;; is killed too.
3816 (defun Info-kill-buffer ()
3817 (and (eq major-mode 'Info-mode)
3818 Info-tag-table-buffer
3819 (kill-buffer Info-tag-table-buffer)))
3821 (add-hook 'kill-buffer-hook 'Info-kill-buffer)
3823 ;;; Speedbar support:
3824 ;; These functions permit speedbar to display the "tags" in the
3825 ;; current info node.
3826 (eval-when-compile (require 'speedbar))
3828 (defvar Info-speedbar-key-map nil
3829 "Keymap used when in the info display mode.")
3831 (defun Info-install-speedbar-variables ()
3832 "Install those variables used by speedbar to enhance Info."
3833 (if Info-speedbar-key-map
3834 nil
3835 (setq Info-speedbar-key-map (speedbar-make-specialized-keymap))
3837 ;; Basic tree features
3838 (define-key Info-speedbar-key-map "e" 'speedbar-edit-line)
3839 (define-key Info-speedbar-key-map "\C-m" 'speedbar-edit-line)
3840 (define-key Info-speedbar-key-map "+" 'speedbar-expand-line)
3841 (define-key Info-speedbar-key-map "-" 'speedbar-contract-line)
3842 )
3844 (speedbar-add-expansion-list '("Info" Info-speedbar-menu-items
3845 Info-speedbar-key-map
3846 Info-speedbar-hierarchy-buttons)))
3848 (defvar Info-speedbar-menu-items
3849 '(["Browse Node" speedbar-edit-line t]
3850 ["Expand Node" speedbar-expand-line
3851 (save-excursion (beginning-of-line)
3853 ["Contract Node" speedbar-contract-line
3854 (save-excursion (beginning-of-line)
3855 (looking-at "[0-9]+: *.-. "))]
3856 )
3857 "Additional menu-items to add to speedbar frame.")
3859 ;; Make sure our special speedbar major mode is loaded
3860 (if (featurep 'speedbar)
3861 (Info-install-speedbar-variables)
3862 (add-hook 'speedbar-load-hook 'Info-install-speedbar-variables))
3864 ;;; Info hierarchy display method
3865 ;;;###autoload
3866 (defun Info-speedbar-browser ()
3867 "Initialize speedbar to display an info node browser.
3868 This will add a speedbar major display mode."
3869 (interactive)
3870 (require 'speedbar)
3871 ;; Make sure that speedbar is active
3872 (speedbar-frame-mode 1)
3873 ;; Now, throw us into Info mode on speedbar.
3874 (speedbar-change-initial-expansion-list "Info")
3875 )
3877 (eval-when-compile (defvar speedbar-attached-frame))
3879 (defun Info-speedbar-hierarchy-buttons (directory depth &optional node)
3880 "Display an Info directory hierarchy in speedbar.
3881 DIRECTORY is the current directory in the attached frame.
3882 DEPTH is the current indentation depth.
3883 NODE is an optional argument that is used to represent the
3884 specific node to expand."
3885 (if (and (not node)
3886 (save-excursion (goto-char (point-min))
3887 (let ((case-fold-search t))
3888 (looking-at "Info Nodes:"))))
3889 ;; Update our "current node" maybe?
3890 nil
3891 ;; We cannot use the generic list code, that depends on all leaves
3892 ;; being known at creation time.
3893 (if (not node)
3895 (let ((completions nil)
3896 (cf (selected-frame)))
3897 (select-frame speedbar-attached-frame)
3898 (save-window-excursion
3899 (setq completions
3900 (Info-speedbar-fetch-file-nodes (or node '"(dir)top"))))
3901 (select-frame cf)
3902 (if completions
3903 (speedbar-with-writable
3904 (dolist (completion completions)
3905 (speedbar-make-tag-line 'bracket ?+ 'Info-speedbar-expand-node
3906 (cdr completion)
3907 (car completion)
3908 'Info-speedbar-goto-node
3909 (cdr completion)
3910 'info-xref depth))
3911 t)
3912 nil))))
3914 (defun Info-speedbar-goto-node (text node indent)
3915 "When user clicks on TEXT, go to an info NODE.
3916 The INDENT level is ignored."
3917 (select-frame speedbar-attached-frame)
3918 (let* ((buff (or (get-buffer "*info*")
3919 (progn (info) (get-buffer "*info*"))))
3920 (bwin (get-buffer-window buff 0)))
3921 (if bwin
3922 (progn
3923 (select-window bwin)
3924 (raise-frame (window-frame bwin)))
3925 (if speedbar-power-click
3926 (let ((pop-up-frames t)) (select-window (display-buffer buff)))
3927 (select-frame speedbar-attached-frame)
3928 (switch-to-buffer buff)))
3930 (error "Invalid node %s" node)
3931 (Info-find-node (match-string 1 node) (match-string 2 node))
3932 ;; If we do a find-node, and we were in info mode, restore
3933 ;; the old default method. Once we are in info mode, it makes
3934 ;; sense to return to whatever method the user was using before.
3935 (if (string= speedbar-initial-expansion-list-name "Info")
3936 (speedbar-change-initial-expansion-list
3937 speedbar-previously-used-expansion-list-name)))))
3939 (defun Info-speedbar-expand-node (text token indent)
3940 "Expand the node the user clicked on.
3941 TEXT is the text of the button we clicked on, a + or - item.
3942 TOKEN is data related to this node (NAME . FILE).
3943 INDENT is the current indentation depth."
3944 (cond ((string-match "+" text) ;we have to expand this file
3945 (speedbar-change-expand-button-char ?-)
3946 (if (speedbar-with-writable
3947 (save-excursion
3948 (end-of-line) (forward-char 1)
3949 (Info-speedbar-hierarchy-buttons nil (1+ indent) token)))
3950 (speedbar-change-expand-button-char ?-)
3951 (speedbar-change-expand-button-char ??)))
3952 ((string-match "-" text) ;we have to contract this node
3953 (speedbar-change-expand-button-char ?+)
3954 (speedbar-delete-subblock indent))
3955 (t (error "Ooops... not sure what to do")))
3956 (speedbar-center-buffer-smartly))
3958 (defun Info-speedbar-fetch-file-nodes (nodespec)
3959 "Fetch the subnodes from the info NODESPEC.
3960 NODESPEC is a string of the form: (file)node.
3961 Optional THISFILE represends the filename of"
3962 (save-excursion
3963 ;; Set up a buffer we can use to fake-out Info.
3964 (set-buffer (get-buffer-create "*info-browse-tmp*"))
3965 (if (not (equal major-mode 'Info-mode))
3966 (Info-mode))
3967 ;; Get the node into this buffer
3969 (error "Invalid node specification %s" nodespec)
3970 (Info-find-node (match-string 1 nodespec) (match-string 2 nodespec)))
3971 ;; Scan the created buffer
3972 (goto-char (point-min))
3973 (let ((completions nil)
3974 (case-fold-search t)
3976 (match-string 1 nodespec))))
3977 ;; Always skip the first one...
3980 (let ((name (match-string 1)))
3981 (push (cons name
3983 (match-string 1)
3985 (concat (match-string 1) "Top")
3986 (concat "(" thisfile ")"
3988 (match-string 1)
3989 name)))))
3990 completions)))
3991 (nreverse completions))))
3993 ;;; Info mode node listing
3994 ;; FIXME: Seems not to be used. -stef
3995 (defun Info-speedbar-buttons (buffer)
3996 "Create a speedbar display to help navigation in an Info file.
3997 BUFFER is the buffer speedbar is requesting buttons for."
3998 (if (save-excursion (goto-char (point-min))
3999 (let ((case-fold-search t))
4000 (not (looking-at "Info Nodes:"))))
4001 (erase-buffer))
4002 (Info-speedbar-hierarchy-buttons nil 0)
4003 )
4005 (dolist (mess '("^Node has no Previous$"
4006 "^No menu in this node$"
4007 "^Node has no Next$"
4008 "^No cross-references in this node^"
4009 search-failed
4011 (add-to-list 'debug-ignored-errors mess))
4013 ;;;; Desktop support
4015 (defun Info-desktop-buffer-misc-data (desktop-dirname)
4016 "Auxiliary information to be saved in desktop file."
4017 (if (not (member Info-current-file '("apropos" "history" "toc")))
4018 (list Info-current-file Info-current-node)))
4020 ;;;###autoload
4021 (defun Info-restore-desktop-buffer (desktop-buffer-file-name
4022 desktop-buffer-name
4023 desktop-buffer-misc)
4024 "Restore an info buffer specified in a desktop file."
4025 (let ((first (nth 0 desktop-buffer-misc))
4026 (second (nth 1 desktop-buffer-misc)))
4027 (when (and first second)
4028 (when desktop-buffer-name
4029 (set-buffer (get-buffer-create desktop-buffer-name))
4030 (Info-mode))
4031 (Info-find-node first second)
4032 (current-buffer))))
4034 (provide 'info)
4036 ;;; arch-tag: f2480fe2-2139-40c1-a49b-6314991164ac
4037 ;;; info.el ends here