mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-27 07:37:33 +00:00
1253 lines
40 KiB
EmacsLisp
1253 lines
40 KiB
EmacsLisp
;;; gnus-cite.el --- parse citations in articles for Gnus
|
|
|
|
;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
|
|
;; 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
|
|
|
|
;; Author: Per Abhiddenware
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs is free software: you can redistribute it and/or modify
|
|
;; it under the terms of the GNU General Public License as published by
|
|
;; the Free Software Foundation, either version 3 of the License, or
|
|
;; (at your option) any later version.
|
|
|
|
;; GNU Emacs is distributed in the hope that it will be useful,
|
|
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;; GNU General Public License for more details.
|
|
|
|
;; You should have received a copy of the GNU General Public License
|
|
;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;;; Code:
|
|
|
|
(eval-when-compile (require 'cl))
|
|
(eval-when-compile
|
|
(when (featurep 'xemacs)
|
|
(require 'easy-mmode))) ; for `define-minor-mode'
|
|
|
|
(require 'gnus)
|
|
(require 'gnus-range)
|
|
(require 'gnus-art)
|
|
(require 'message) ; for message-cite-prefix-regexp
|
|
|
|
;;; Customization:
|
|
|
|
(defgroup gnus-cite nil
|
|
"Citation."
|
|
:prefix "gnus-cite-"
|
|
:link '(custom-manual "(gnus)Article Highlighting")
|
|
:group 'gnus-article)
|
|
|
|
(defcustom gnus-cited-opened-text-button-line-format "%(%{[-]%}%)\n"
|
|
"Format of opened cited text buttons."
|
|
:group 'gnus-cite
|
|
:type 'string)
|
|
|
|
(defcustom gnus-cited-closed-text-button-line-format "%(%{[+]%}%)\n"
|
|
"Format of closed cited text buttons."
|
|
:group 'gnus-cite
|
|
:type 'string)
|
|
|
|
(defcustom gnus-cited-lines-visible nil
|
|
"The number of lines of hidden cited text to remain visible.
|
|
Or a pair (cons) of numbers which are the number of lines at the top
|
|
and bottom of the text, respectively, to remain visible."
|
|
:group 'gnus-cite
|
|
:type '(choice (const :tag "none" nil)
|
|
integer
|
|
(cons :tag "Top and Bottom" integer integer)))
|
|
|
|
(defcustom gnus-cite-parse-max-size 25000
|
|
"Maximum article size (in bytes) where parsing citations is allowed.
|
|
Set it to nil to parse all articles."
|
|
:group 'gnus-cite
|
|
:type '(choice (const :tag "all" nil)
|
|
integer))
|
|
|
|
(defcustom gnus-cite-max-prefix 20
|
|
"Maximum possible length for a citation prefix."
|
|
:group 'gnus-cite
|
|
:type 'integer)
|
|
|
|
(defcustom gnus-supercite-regexp
|
|
(concat "^\\(" message-cite-prefix-regexp "\\)? *"
|
|
">>>>> +\"\\([^\"\n]+\\)\" +==")
|
|
"*Regexp matching normal Supercite attribution lines.
|
|
The first grouping must match prefixes added by other packages."
|
|
:group 'gnus-cite
|
|
:type 'regexp)
|
|
|
|
(defcustom gnus-supercite-secondary-regexp "^.*\"\\([^\"\n]+\\)\" +=="
|
|
"Regexp matching mangled Supercite attribution lines.
|
|
The first regexp group should match the Supercite attribution."
|
|
:group 'gnus-cite
|
|
:type 'regexp)
|
|
|
|
(defcustom gnus-cite-minimum-match-count 2
|
|
"Minimum number of identical prefixes before we believe it's a citation."
|
|
:group 'gnus-cite
|
|
:type 'integer)
|
|
|
|
;; Some Microsoft products put in a citation that extends to the
|
|
;; remainder of the message:
|
|
;;
|
|
;; -----Original Message-----
|
|
;; From: ...
|
|
;; To: ...
|
|
;; Sent: ... [date, in non-RFC-2822 format]
|
|
;; Subject: ...
|
|
;;
|
|
;; Cited message, with no prefixes
|
|
;;
|
|
;; The four headers are always the same. But note they are prone to
|
|
;; folding without additional indentation.
|
|
;;
|
|
;; Others use "----- Original Message -----" instead, and properly quote
|
|
;; the body using "> ". This style is handled without special cases.
|
|
|
|
(defcustom gnus-cite-attribution-prefix
|
|
"In article\\|in <\\|On \\(Mon\\|Tue\\|Wed\\|Thu\\|Fri\\|Sat\\|Sun\\),\\|----- ?Original Message ?-----"
|
|
"*Regexp matching the beginning of an attribution line."
|
|
:group 'gnus-cite
|
|
:type 'regexp)
|
|
|
|
(defcustom gnus-cite-attribution-suffix
|
|
"\\(\\(wrote\\|writes\\|said\\|says\\|>\\)\\(:\\|\\.\\.\\.\\)\\|----- ?Original Message ?-----\\)[ \t]*$"
|
|
"*Regexp matching the end of an attribution line.
|
|
The text matching the first grouping will be used as a button."
|
|
:group 'gnus-cite
|
|
:type 'regexp)
|
|
|
|
(defcustom gnus-cite-unsightly-citation-regexp
|
|
"^-----Original Message-----\nFrom: \\(.+\n\\)+\n"
|
|
"Regexp matching Microsoft-type rest-of-message citations."
|
|
:version "22.1"
|
|
:group 'gnus-cite
|
|
:type 'regexp)
|
|
|
|
(defcustom gnus-cite-ignore-quoted-from t
|
|
"Non-nil means don't regard lines beginning with \">From \" as cited text.
|
|
Those lines may have been quoted by MTAs in order not to mix up with
|
|
the envelope From line."
|
|
:version "22.1"
|
|
:group 'gnus-cite
|
|
:type 'boolean)
|
|
|
|
(defface gnus-cite-attribution '((t (:italic t)))
|
|
"Face used for attribution lines."
|
|
:group 'gnus-cite)
|
|
;; backward-compatibility alias
|
|
(put 'gnus-cite-attribution-face 'face-alias 'gnus-cite-attribution)
|
|
(put 'gnus-cite-attribution-face 'obsolete-face "22.1")
|
|
|
|
(defcustom gnus-cite-attribution-face 'gnus-cite-attribution
|
|
"Face used for attribution lines.
|
|
It is merged with the face for the cited text belonging to the attribution."
|
|
:version "22.1"
|
|
:group 'gnus-cite
|
|
:type 'face)
|
|
|
|
(defface gnus-cite-1 '((((class color)
|
|
(background dark))
|
|
(:foreground "light blue"))
|
|
(((class color)
|
|
(background light))
|
|
(:foreground "MidnightBlue"))
|
|
(t
|
|
(:italic t)))
|
|
"Citation face."
|
|
:group 'gnus-cite)
|
|
;; backward-compatibility alias
|
|
(put 'gnus-cite-face-1 'face-alias 'gnus-cite-1)
|
|
(put 'gnus-cite-face-1 'obsolete-face "22.1")
|
|
|
|
(defface gnus-cite-2 '((((class color)
|
|
(background dark))
|
|
(:foreground "light cyan"))
|
|
(((class color)
|
|
(background light))
|
|
(:foreground "firebrick"))
|
|
(t
|
|
(:italic t)))
|
|
"Citation face."
|
|
:group 'gnus-cite)
|
|
;; backward-compatibility alias
|
|
(put 'gnus-cite-face-2 'face-alias 'gnus-cite-2)
|
|
(put 'gnus-cite-face-2 'obsolete-face "22.1")
|
|
|
|
(defface gnus-cite-3 '((((class color)
|
|
(background dark))
|
|
(:foreground "light yellow"))
|
|
(((class color)
|
|
(background light))
|
|
(:foreground "dark green"))
|
|
(t
|
|
(:italic t)))
|
|
"Citation face."
|
|
:group 'gnus-cite)
|
|
;; backward-compatibility alias
|
|
(put 'gnus-cite-face-3 'face-alias 'gnus-cite-3)
|
|
(put 'gnus-cite-face-3 'obsolete-face "22.1")
|
|
|
|
(defface gnus-cite-4 '((((class color)
|
|
(background dark))
|
|
(:foreground "light pink"))
|
|
(((class color)
|
|
(background light))
|
|
(:foreground "OrangeRed"))
|
|
(t
|
|
(:italic t)))
|
|
"Citation face."
|
|
:group 'gnus-cite)
|
|
;; backward-compatibility alias
|
|
(put 'gnus-cite-face-4 'face-alias 'gnus-cite-4)
|
|
(put 'gnus-cite-face-4 'obsolete-face "22.1")
|
|
|
|
(defface gnus-cite-5 '((((class color)
|
|
(background dark))
|
|
(:foreground "pale green"))
|
|
(((class color)
|
|
(background light))
|
|
(:foreground "dark khaki"))
|
|
(t
|
|
(:italic t)))
|
|
"Citation face."
|
|
:group 'gnus-cite)
|
|
;; backward-compatibility alias
|
|
(put 'gnus-cite-face-5 'face-alias 'gnus-cite-5)
|
|
(put 'gnus-cite-face-5 'obsolete-face "22.1")
|
|
|
|
(defface gnus-cite-6 '((((class color)
|
|
(background dark))
|
|
(:foreground "beige"))
|
|
(((class color)
|
|
(background light))
|
|
(:foreground "dark violet"))
|
|
(t
|
|
(:italic t)))
|
|
"Citation face."
|
|
:group 'gnus-cite)
|
|
;; backward-compatibility alias
|
|
(put 'gnus-cite-face-6 'face-alias 'gnus-cite-6)
|
|
(put 'gnus-cite-face-6 'obsolete-face "22.1")
|
|
|
|
(defface gnus-cite-7 '((((class color)
|
|
(background dark))
|
|
(:foreground "orange"))
|
|
(((class color)
|
|
(background light))
|
|
(:foreground "SteelBlue4"))
|
|
(t
|
|
(:italic t)))
|
|
"Citation face."
|
|
:group 'gnus-cite)
|
|
;; backward-compatibility alias
|
|
(put 'gnus-cite-face-7 'face-alias 'gnus-cite-7)
|
|
(put 'gnus-cite-face-7 'obsolete-face "22.1")
|
|
|
|
(defface gnus-cite-8 '((((class color)
|
|
(background dark))
|
|
(:foreground "magenta"))
|
|
(((class color)
|
|
(background light))
|
|
(:foreground "magenta"))
|
|
(t
|
|
(:italic t)))
|
|
"Citation face."
|
|
:group 'gnus-cite)
|
|
;; backward-compatibility alias
|
|
(put 'gnus-cite-face-8 'face-alias 'gnus-cite-8)
|
|
(put 'gnus-cite-face-8 'obsolete-face "22.1")
|
|
|
|
(defface gnus-cite-9 '((((class color)
|
|
(background dark))
|
|
(:foreground "violet"))
|
|
(((class color)
|
|
(background light))
|
|
(:foreground "violet"))
|
|
(t
|
|
(:italic t)))
|
|
"Citation face."
|
|
:group 'gnus-cite)
|
|
;; backward-compatibility alias
|
|
(put 'gnus-cite-face-9 'face-alias 'gnus-cite-9)
|
|
(put 'gnus-cite-face-9 'obsolete-face "22.1")
|
|
|
|
(defface gnus-cite-10 '((((class color)
|
|
(background dark))
|
|
(:foreground "plum1"))
|
|
(((class color)
|
|
(background light))
|
|
(:foreground "medium purple"))
|
|
(t
|
|
(:italic t)))
|
|
"Citation face."
|
|
:group 'gnus-cite)
|
|
;; backward-compatibility alias
|
|
(put 'gnus-cite-face-10 'face-alias 'gnus-cite-10)
|
|
(put 'gnus-cite-face-10 'obsolete-face "22.1")
|
|
|
|
(defface gnus-cite-11 '((((class color)
|
|
(background dark))
|
|
(:foreground "turquoise"))
|
|
(((class color)
|
|
(background light))
|
|
(:foreground "turquoise"))
|
|
(t
|
|
(:italic t)))
|
|
"Citation face."
|
|
:group 'gnus-cite)
|
|
;; backward-compatibility alias
|
|
(put 'gnus-cite-face-11 'face-alias 'gnus-cite-11)
|
|
(put 'gnus-cite-face-11 'obsolete-face "22.1")
|
|
|
|
(defcustom gnus-cite-face-list
|
|
'(gnus-cite-1 gnus-cite-2 gnus-cite-3 gnus-cite-4 gnus-cite-5 gnus-cite-6
|
|
gnus-cite-7 gnus-cite-8 gnus-cite-9 gnus-cite-10 gnus-cite-11)
|
|
"*List of faces used for highlighting citations.
|
|
|
|
When there are citations from multiple articles in the same message,
|
|
Gnus will try to give each citation from each article its own face.
|
|
This should make it easier to see who wrote what."
|
|
:group 'gnus-cite
|
|
:type '(repeat face)
|
|
:set (lambda (symbol value)
|
|
(prog1
|
|
(custom-set-default symbol value)
|
|
(if (boundp 'gnus-message-max-citation-depth)
|
|
(setq gnus-message-max-citation-depth (length value)))
|
|
(if (boundp 'gnus-message-citation-keywords)
|
|
(setq gnus-message-citation-keywords
|
|
`((gnus-message-search-citation-line
|
|
,@(let ((list nil)
|
|
(count 1))
|
|
(dolist (face value (nreverse list))
|
|
(push (list count (list 'quote face) 'prepend t)
|
|
list)
|
|
(setq count (1+ count)))))))))))
|
|
|
|
(defcustom gnus-cite-hide-percentage 50
|
|
"Only hide excess citation if above this percentage of the body."
|
|
:group 'gnus-cite
|
|
:type 'number)
|
|
|
|
(defcustom gnus-cite-hide-absolute 10
|
|
"Only hide excess citation if above this number of lines in the body."
|
|
:group 'gnus-cite
|
|
:type 'integer)
|
|
|
|
(defcustom gnus-cite-blank-line-after-header t
|
|
"If non-nil, put a blank line between the citation header and the button."
|
|
:group 'gnus-cite
|
|
:type 'boolean)
|
|
|
|
;; This has to go here because its default value depends on
|
|
;; gnus-cite-face-list.
|
|
(defcustom gnus-article-boring-faces (cons 'gnus-signature gnus-cite-face-list)
|
|
"List of faces that are not worth reading.
|
|
If an article has more pages below the one you are looking at, but
|
|
nothing on those pages is a word of at least three letters that is not
|
|
in a boring face, then the pages will be skipped."
|
|
:type '(repeat face)
|
|
:group 'gnus-article-hiding)
|
|
|
|
;;; Internal Variables:
|
|
|
|
(defvar gnus-cite-article nil)
|
|
(defvar gnus-cite-overlay-list nil)
|
|
|
|
(defvar gnus-cite-prefix-alist nil)
|
|
;; Alist of citation prefixes.
|
|
;; The cdr is a list of lines with that prefix.
|
|
|
|
(defvar gnus-cite-attribution-alist nil)
|
|
;; Alist of attribution lines.
|
|
;; The car is a line number.
|
|
;; The cdr is the prefix for the citation started by that line.
|
|
|
|
(defvar gnus-cite-loose-prefix-alist nil)
|
|
;; Alist of citation prefixes that have no matching attribution.
|
|
;; The cdr is a list of lines with that prefix.
|
|
|
|
(defvar gnus-cite-loose-attribution-alist nil)
|
|
;; Alist of attribution lines that have no matching citation.
|
|
;; Each member has the form (WROTE IN PREFIX TAG), where
|
|
;; WROTE: is the attribution line number
|
|
;; IN: is the line number of the previous line if part of the same attribution,
|
|
;; PREFIX: Is the citation prefix of the attribution line(s), and
|
|
;; TAG: Is a Supercite tag, if any.
|
|
|
|
(defvar gnus-cited-opened-text-button-line-format-alist
|
|
`((?b (marker-position beg) ?d)
|
|
(?e (marker-position end) ?d)
|
|
(?n (count-lines beg end) ?d)
|
|
(?l (- end beg) ?d)))
|
|
(defvar gnus-cited-opened-text-button-line-format-spec nil)
|
|
(defvar gnus-cited-closed-text-button-line-format-alist
|
|
gnus-cited-opened-text-button-line-format-alist)
|
|
(defvar gnus-cited-closed-text-button-line-format-spec nil)
|
|
|
|
|
|
;;; Commands:
|
|
|
|
(defun gnus-article-highlight-citation (&optional force same-buffer)
|
|
"Highlight cited text.
|
|
Each citation in the article will be highlighted with a different face.
|
|
The faces are taken from `gnus-cite-face-list'.
|
|
Attribution lines are highlighted with the same face as the
|
|
corresponding citation merged with the face `gnus-cite-attribution'.
|
|
|
|
Text is considered cited if at least `gnus-cite-minimum-match-count'
|
|
lines matches `message-cite-prefix-regexp' with the same prefix.
|
|
|
|
Lines matching `gnus-cite-attribution-suffix' and perhaps
|
|
`gnus-cite-attribution-prefix' are considered attribution lines."
|
|
(interactive (list 'force))
|
|
(save-excursion
|
|
(unless same-buffer
|
|
(set-buffer gnus-article-buffer))
|
|
(gnus-cite-parse-maybe force)
|
|
(let ((buffer-read-only nil)
|
|
(alist gnus-cite-prefix-alist)
|
|
(faces gnus-cite-face-list)
|
|
(inhibit-point-motion-hooks t)
|
|
face entry prefix skip numbers number face-alist)
|
|
;; Loop through citation prefixes.
|
|
(while alist
|
|
(setq entry (car alist)
|
|
alist (cdr alist)
|
|
prefix (car entry)
|
|
numbers (cdr entry)
|
|
face (car faces)
|
|
faces (or (cdr faces) gnus-cite-face-list)
|
|
face-alist (cons (cons prefix face) face-alist))
|
|
(while numbers
|
|
(setq number (car numbers)
|
|
numbers (cdr numbers))
|
|
(and (not (assq number gnus-cite-attribution-alist))
|
|
(not (assq number gnus-cite-loose-attribution-alist))
|
|
(gnus-cite-add-face number prefix face))))
|
|
;; Loop through attribution lines.
|
|
(setq alist gnus-cite-attribution-alist)
|
|
(while alist
|
|
(setq entry (car alist)
|
|
alist (cdr alist)
|
|
number (car entry)
|
|
prefix (cdr entry)
|
|
skip (gnus-cite-find-prefix number)
|
|
face (cdr (assoc prefix face-alist)))
|
|
;; Add attribution button.
|
|
(goto-char (point-min))
|
|
(forward-line (1- number))
|
|
(when (re-search-forward gnus-cite-attribution-suffix
|
|
(point-at-eol)
|
|
t)
|
|
(gnus-article-add-button (match-beginning 1) (match-end 1)
|
|
'gnus-cite-toggle prefix))
|
|
;; Highlight attribution line.
|
|
(gnus-cite-add-face number skip face)
|
|
(gnus-cite-add-face number skip gnus-cite-attribution-face))
|
|
;; Loop through attribution lines.
|
|
(setq alist gnus-cite-loose-attribution-alist)
|
|
(while alist
|
|
(setq entry (car alist)
|
|
alist (cdr alist)
|
|
number (car entry)
|
|
skip (gnus-cite-find-prefix number))
|
|
(gnus-cite-add-face number skip gnus-cite-attribution-face)))))
|
|
|
|
(defun gnus-dissect-cited-text ()
|
|
"Dissect the article buffer looking for cited text."
|
|
(save-excursion
|
|
(set-buffer gnus-article-buffer)
|
|
(gnus-cite-parse-maybe nil t)
|
|
(let ((alist gnus-cite-prefix-alist)
|
|
prefix numbers number marks m)
|
|
;; Loop through citation prefixes.
|
|
(while alist
|
|
(setq numbers (pop alist)
|
|
prefix (pop numbers))
|
|
(while numbers
|
|
(setq number (pop numbers))
|
|
(goto-char (point-min))
|
|
(forward-line number)
|
|
(push (cons (point-marker) "") marks)
|
|
(while (and numbers
|
|
(= (1- number) (car numbers)))
|
|
(setq number (pop numbers)))
|
|
(goto-char (point-min))
|
|
(forward-line (1- number))
|
|
(push (cons (point-marker) prefix) marks)))
|
|
;; Skip to the beginning of the body.
|
|
(article-goto-body)
|
|
(push (cons (point-marker) "") marks)
|
|
;; Find the end of the body.
|
|
(goto-char (point-max))
|
|
(gnus-article-search-signature)
|
|
(push (cons (point-marker) "") marks)
|
|
;; Sort the marks.
|
|
(setq marks (sort marks 'car-less-than-car))
|
|
(let ((omarks marks))
|
|
(setq marks nil)
|
|
(while (cdr omarks)
|
|
(if (= (caar omarks) (caadr omarks))
|
|
(progn
|
|
(unless (equal (cdar omarks) "")
|
|
(push (car omarks) marks))
|
|
(unless (equal (cdadr omarks) "")
|
|
(push (cadr omarks) marks))
|
|
(unless (and (equal (cdar omarks) "")
|
|
(equal (cdadr omarks) "")
|
|
(not (cddr omarks)))
|
|
(setq omarks (cdr omarks))))
|
|
(push (car omarks) marks))
|
|
(setq omarks (cdr omarks)))
|
|
(when (car omarks)
|
|
(push (car omarks) marks))
|
|
(setq marks (setq m (nreverse marks)))
|
|
(while (cddr m)
|
|
(if (and (equal (cdadr m) "")
|
|
(equal (cdar m) (cdaddr m))
|
|
(goto-char (caadr m))
|
|
(forward-line 1)
|
|
(= (point) (caaddr m)))
|
|
(setcdr m (cdddr m))
|
|
(setq m (cdr m))))
|
|
marks))))
|
|
|
|
(defun gnus-article-fill-cited-article (&optional force width)
|
|
"Do word wrapping in the current article.
|
|
If WIDTH (the numerical prefix), use that text width when filling."
|
|
(interactive (list t current-prefix-arg))
|
|
(save-excursion
|
|
(set-buffer gnus-article-buffer)
|
|
(let ((buffer-read-only nil)
|
|
(inhibit-point-motion-hooks t)
|
|
(marks (gnus-dissect-cited-text))
|
|
(adaptive-fill-mode nil)
|
|
(filladapt-mode nil)
|
|
(fill-column (if width (prefix-numeric-value width) fill-column)))
|
|
(save-restriction
|
|
(while (cdr marks)
|
|
(narrow-to-region (caar marks) (caadr marks))
|
|
(let ((adaptive-fill-regexp
|
|
(concat "^" (regexp-quote (cdar marks)) " *"))
|
|
(fill-prefix
|
|
(if (string= (cdar marks) "") ""
|
|
(concat (cdar marks) " ")))
|
|
use-hard-newlines)
|
|
(fill-region (point-min) (point-max)))
|
|
(set-marker (caar marks) nil)
|
|
(setq marks (cdr marks)))
|
|
(when marks
|
|
(set-marker (caar marks) nil))
|
|
;; All this information is now incorrect.
|
|
(setq gnus-cite-prefix-alist nil
|
|
gnus-cite-attribution-alist nil
|
|
gnus-cite-loose-prefix-alist nil
|
|
gnus-cite-loose-attribution-alist nil
|
|
gnus-cite-article nil)))))
|
|
|
|
(defun gnus-article-hide-citation (&optional arg force)
|
|
"Toggle hiding of all cited text except attribution lines.
|
|
See the documentation for `gnus-article-highlight-citation'.
|
|
If given a negative prefix, always show; if given a positive prefix,
|
|
always hide."
|
|
(interactive (append (gnus-article-hidden-arg) (list 'force)))
|
|
(gnus-set-format 'cited-opened-text-button t)
|
|
(gnus-set-format 'cited-closed-text-button t)
|
|
(save-excursion
|
|
(set-buffer gnus-article-buffer)
|
|
(let ((buffer-read-only nil)
|
|
marks
|
|
(inhibit-point-motion-hooks t)
|
|
(props (nconc (list 'article-type 'cite)
|
|
gnus-hidden-properties))
|
|
(point (point-min))
|
|
found beg end start)
|
|
(while (setq point
|
|
(text-property-any point (point-max)
|
|
'gnus-callback
|
|
'gnus-article-toggle-cited-text))
|
|
(setq found t)
|
|
(goto-char point)
|
|
(gnus-article-toggle-cited-text
|
|
(get-text-property point 'gnus-data) arg)
|
|
(forward-line 1)
|
|
(setq point (point)))
|
|
(unless found
|
|
(setq marks (gnus-dissect-cited-text))
|
|
(while marks
|
|
(setq beg nil
|
|
end nil)
|
|
(while (and marks (string= (cdar marks) ""))
|
|
(setq marks (cdr marks)))
|
|
(when marks
|
|
(setq beg (caar marks)))
|
|
(while (and marks (not (string= (cdar marks) "")))
|
|
(setq marks (cdr marks)))
|
|
(when marks
|
|
(setq end (caar marks)))
|
|
;; Skip past lines we want to leave visible.
|
|
(when (and beg end gnus-cited-lines-visible)
|
|
(goto-char beg)
|
|
(forward-line (if (consp gnus-cited-lines-visible)
|
|
(car gnus-cited-lines-visible)
|
|
gnus-cited-lines-visible))
|
|
(if (>= (point) end)
|
|
(setq beg nil)
|
|
(setq beg (point-marker))
|
|
(when (consp gnus-cited-lines-visible)
|
|
(goto-char end)
|
|
(forward-line (- (cdr gnus-cited-lines-visible)))
|
|
(if (<= (point) beg)
|
|
(setq beg nil)
|
|
(setq end (point-marker))))))
|
|
(when (and beg end)
|
|
(gnus-add-wash-type 'cite)
|
|
;; We use markers for the end-points to facilitate later
|
|
;; wrapping and mangling of text.
|
|
(setq beg (set-marker (make-marker) beg)
|
|
end (set-marker (make-marker) end))
|
|
(gnus-add-text-properties-when 'article-type nil beg end props)
|
|
(goto-char beg)
|
|
(when (and gnus-cite-blank-line-after-header
|
|
(not (save-excursion (search-backward "\n\n" nil t))))
|
|
(insert "\n"))
|
|
(put-text-property
|
|
(setq start (point-marker))
|
|
(progn
|
|
(gnus-article-add-button
|
|
(point)
|
|
(progn (eval gnus-cited-closed-text-button-line-format-spec)
|
|
(point))
|
|
`gnus-article-toggle-cited-text
|
|
(list (cons beg end) start))
|
|
(point))
|
|
'article-type 'annotation)
|
|
(set-marker beg (point))))))))
|
|
|
|
(defun gnus-article-toggle-cited-text (args &optional arg)
|
|
"Toggle hiding the text in REGION.
|
|
ARG can be nil or a number. Positive means hide, negative
|
|
means show, nil means toggle."
|
|
(let* ((region (car args))
|
|
(beg (car region))
|
|
(end (cdr region))
|
|
(start (cadr args))
|
|
(hidden
|
|
(text-property-any beg (1- end) 'article-type 'cite))
|
|
(inhibit-point-motion-hooks t)
|
|
buffer-read-only)
|
|
(when (or (null arg)
|
|
(zerop arg)
|
|
(and (> arg 0) (not hidden))
|
|
(and (< arg 0) hidden))
|
|
(if hidden
|
|
(progn
|
|
;; Can't remove 'cite from g-a-wash-types here because
|
|
;; multiple citations may be hidden -jas
|
|
(gnus-remove-text-properties-when
|
|
'article-type 'cite beg end
|
|
(cons 'article-type (cons 'cite
|
|
gnus-hidden-properties))))
|
|
(gnus-add-wash-type 'cite)
|
|
(gnus-add-text-properties-when
|
|
'article-type nil beg end
|
|
(cons 'article-type (cons 'cite
|
|
gnus-hidden-properties))))
|
|
(let ((gnus-article-mime-handle-alist-1 gnus-article-mime-handle-alist))
|
|
(gnus-set-mode-line 'article))
|
|
(save-excursion
|
|
(goto-char start)
|
|
(gnus-delete-line)
|
|
(put-text-property
|
|
(point)
|
|
(progn
|
|
(gnus-article-add-button
|
|
(point)
|
|
(progn (eval
|
|
(if hidden
|
|
gnus-cited-opened-text-button-line-format-spec
|
|
gnus-cited-closed-text-button-line-format-spec))
|
|
(point))
|
|
`gnus-article-toggle-cited-text
|
|
args)
|
|
(point))
|
|
'article-type 'annotation)))))
|
|
|
|
(defun gnus-article-hide-citation-maybe (&optional arg force)
|
|
"Toggle hiding of cited text that has an attribution line.
|
|
If given a negative prefix, always show; if given a positive prefix,
|
|
always hide.
|
|
This will do nothing unless at least `gnus-cite-hide-percentage'
|
|
percent and at least `gnus-cite-hide-absolute' lines of the body is
|
|
cited text with attributions. When called interactively, these two
|
|
variables are ignored.
|
|
See also the documentation for `gnus-article-highlight-citation'."
|
|
(interactive (append (gnus-article-hidden-arg) '(force)))
|
|
(with-current-buffer gnus-article-buffer
|
|
(gnus-delete-wash-type 'cite)
|
|
(unless (gnus-article-check-hidden-text 'cite arg)
|
|
(save-excursion
|
|
(gnus-cite-parse-maybe force)
|
|
(article-goto-body)
|
|
(let ((start (point))
|
|
(atts gnus-cite-attribution-alist)
|
|
(buffer-read-only nil)
|
|
(inhibit-point-motion-hooks t)
|
|
(hidden 0)
|
|
total)
|
|
(goto-char (point-max))
|
|
(gnus-article-search-signature)
|
|
(setq total (count-lines start (point)))
|
|
(while atts
|
|
(setq hidden (+ hidden (length (cdr (assoc (cdar atts)
|
|
gnus-cite-prefix-alist))))
|
|
atts (cdr atts)))
|
|
(when (or force
|
|
(and (> (* 100 hidden) (* gnus-cite-hide-percentage total))
|
|
(> hidden gnus-cite-hide-absolute)))
|
|
(gnus-add-wash-type 'cite)
|
|
(setq atts gnus-cite-attribution-alist)
|
|
(while atts
|
|
(setq total (cdr (assoc (cdar atts) gnus-cite-prefix-alist))
|
|
atts (cdr atts))
|
|
(while total
|
|
(setq hidden (car total)
|
|
total (cdr total))
|
|
(goto-char (point-min))
|
|
(forward-line (1- hidden))
|
|
(unless (assq hidden gnus-cite-attribution-alist)
|
|
(gnus-add-text-properties
|
|
(point) (progn (forward-line 1) (point))
|
|
(nconc (list 'article-type 'cite)
|
|
gnus-hidden-properties)))))))))
|
|
(gnus-set-mode-line 'article)))
|
|
|
|
(defun gnus-article-hide-citation-in-followups ()
|
|
"Hide cited text in non-root articles."
|
|
(interactive)
|
|
(save-excursion
|
|
(set-buffer gnus-article-buffer)
|
|
(let ((article (cdr gnus-article-current)))
|
|
(unless (save-excursion
|
|
(set-buffer gnus-summary-buffer)
|
|
(gnus-article-displayed-root-p article))
|
|
(gnus-article-hide-citation)))))
|
|
|
|
;;; Internal functions:
|
|
|
|
(defun gnus-cite-parse-maybe (&optional force no-overlay)
|
|
"Always parse the buffer."
|
|
(gnus-cite-localize)
|
|
;;Reset parser information.
|
|
(setq gnus-cite-prefix-alist nil
|
|
gnus-cite-attribution-alist nil
|
|
gnus-cite-loose-prefix-alist nil
|
|
gnus-cite-loose-attribution-alist nil)
|
|
(unless no-overlay
|
|
(gnus-cite-delete-overlays))
|
|
;; Parse if not too large.
|
|
(if (and gnus-cite-parse-max-size
|
|
(> (buffer-size) gnus-cite-parse-max-size))
|
|
()
|
|
(setq gnus-cite-article (cons (car gnus-article-current)
|
|
(cdr gnus-article-current)))
|
|
(gnus-cite-parse-wrapper)))
|
|
|
|
(defun gnus-cite-delete-overlays ()
|
|
(dolist (overlay gnus-cite-overlay-list)
|
|
(ignore-errors
|
|
(when (or (not (gnus-overlay-end overlay))
|
|
(and (>= (gnus-overlay-end overlay) (point-min))
|
|
(<= (gnus-overlay-end overlay) (point-max))))
|
|
(setq gnus-cite-overlay-list (delete overlay gnus-cite-overlay-list))
|
|
(ignore-errors
|
|
(gnus-delete-overlay overlay))))))
|
|
|
|
(defun gnus-cite-parse-wrapper ()
|
|
;; Wrap chopped gnus-cite-parse.
|
|
(article-goto-body)
|
|
(let ((inhibit-point-motion-hooks t))
|
|
(save-excursion
|
|
(gnus-cite-parse-attributions))
|
|
(save-excursion
|
|
(gnus-cite-parse))
|
|
(save-excursion
|
|
(gnus-cite-connect-attributions))))
|
|
|
|
(defun gnus-cite-parse ()
|
|
;; Parse and connect citation prefixes and attribution lines.
|
|
|
|
;; Parse current buffer searching for citation prefixes.
|
|
(let ((line (1+ (count-lines (point-min) (point))))
|
|
(case-fold-search t)
|
|
(max (save-excursion
|
|
(goto-char (point-max))
|
|
(gnus-article-search-signature)
|
|
(point)))
|
|
(prefix-regexp (concat "^\\(" message-cite-prefix-regexp "\\)"))
|
|
alist entry start begin end numbers prefix guess-limit)
|
|
;; Get all potential prefixes in `alist'.
|
|
(while (< (point) max)
|
|
;; Each line.
|
|
(setq begin (point)
|
|
guess-limit (progn (skip-chars-forward "^> \t\r\n") (point))
|
|
end (point-at-bol 2)
|
|
start end)
|
|
(goto-char begin)
|
|
;; Ignore standard Supercite attribution prefix.
|
|
(when (and (< guess-limit (+ begin gnus-cite-max-prefix))
|
|
(looking-at gnus-supercite-regexp))
|
|
(if (match-end 1)
|
|
(setq end (1+ (match-end 1)))
|
|
(setq end (1+ begin))))
|
|
;; Ignore very long prefixes.
|
|
(when (> end (+ begin gnus-cite-max-prefix))
|
|
(setq end (+ begin gnus-cite-max-prefix)))
|
|
;; Ignore quoted envelope From_.
|
|
(when (and gnus-cite-ignore-quoted-from
|
|
(prog2
|
|
(setq case-fold-search nil)
|
|
(looking-at ">From ")
|
|
(setq case-fold-search t)))
|
|
(setq end (1+ begin)))
|
|
(while (re-search-forward prefix-regexp (1- end) t)
|
|
;; Each prefix.
|
|
(setq end (match-end 0)
|
|
prefix (buffer-substring begin end))
|
|
(set-text-properties 0 (length prefix) nil prefix)
|
|
(setq entry (assoc prefix alist))
|
|
(if entry
|
|
(setcdr entry (cons line (cdr entry)))
|
|
(push (list prefix line) alist))
|
|
(goto-char begin))
|
|
(goto-char start)
|
|
(setq line (1+ line)))
|
|
;; Horrible special case for some Microsoft mailers.
|
|
(goto-char (point-min))
|
|
(setq start t begin nil entry nil)
|
|
(while start
|
|
;; Assume this search ends up at the beginning of a line.
|
|
(if (re-search-forward gnus-cite-unsightly-citation-regexp max t)
|
|
(progn
|
|
(when (number-or-marker-p start)
|
|
(setq begin (count-lines (point-min) start)
|
|
end (count-lines (point-min) (match-beginning 0))))
|
|
(setq start (match-end 0)))
|
|
(when (number-or-marker-p start)
|
|
(setq begin (count-lines (point-min) start)
|
|
end (count-lines (point-min) max)))
|
|
(setq start nil))
|
|
(when begin
|
|
(while (< begin end)
|
|
;; Need to do 1+ because we're in the bol.
|
|
(push (setq begin (1+ begin)) entry))))
|
|
(when entry
|
|
(push (cons "" entry) alist))
|
|
;; We got all the potential prefixes. Now create
|
|
;; `gnus-cite-prefix-alist' containing the oldest prefix for each
|
|
;; line that appears at least `gnus-cite-minimum-match-count'
|
|
;; times. First sort them by length. Longer is older.
|
|
(setq alist (sort alist (lambda (a b)
|
|
(> (length (car a)) (length (car b))))))
|
|
(while alist
|
|
(setq entry (car alist)
|
|
prefix (car entry)
|
|
numbers (cdr entry)
|
|
alist (cdr alist))
|
|
(cond ((null numbers)
|
|
;; No lines with this prefix that wasn't also part of
|
|
;; a longer prefix.
|
|
)
|
|
((< (length numbers) gnus-cite-minimum-match-count)
|
|
;; Too few lines with this prefix. We keep it a bit
|
|
;; longer in case it is an exact match for an attribution
|
|
;; line, but we don't remove the line from other
|
|
;; prefixes.
|
|
(push entry gnus-cite-prefix-alist))
|
|
(t
|
|
(push entry
|
|
gnus-cite-prefix-alist)
|
|
;; Remove articles from other prefixes.
|
|
(let ((loop alist)
|
|
current)
|
|
(while loop
|
|
(setq current (car loop)
|
|
loop (cdr loop))
|
|
(setcdr current
|
|
(gnus-set-difference (cdr current) numbers)))))))))
|
|
|
|
(defun gnus-cite-parse-attributions ()
|
|
(let (al-alist)
|
|
;; Parse attributions
|
|
(while (re-search-forward gnus-cite-attribution-suffix (point-max) t)
|
|
(let* ((start (match-beginning 0))
|
|
(end (match-end 0))
|
|
(wrote (count-lines (point-min) end))
|
|
(prefix (gnus-cite-find-prefix wrote))
|
|
;; Check previous line for an attribution leader.
|
|
(tag (progn
|
|
(beginning-of-line 1)
|
|
(when (looking-at gnus-supercite-secondary-regexp)
|
|
(buffer-substring (match-beginning 1)
|
|
(match-end 1)))))
|
|
(in (progn
|
|
(goto-char start)
|
|
(and (re-search-backward gnus-cite-attribution-prefix
|
|
(save-excursion
|
|
(beginning-of-line 0)
|
|
(point))
|
|
t)
|
|
(not (re-search-forward gnus-cite-attribution-suffix
|
|
start t))
|
|
(count-lines (point-min) (1+ (point)))))))
|
|
(when (eq wrote in)
|
|
(setq in nil))
|
|
(goto-char end)
|
|
;; don't add duplicates
|
|
(let ((al (buffer-substring (save-excursion (beginning-of-line 0)
|
|
(1+ (point)))
|
|
end)))
|
|
(when (not (assoc al al-alist))
|
|
(push (list wrote in prefix tag)
|
|
gnus-cite-loose-attribution-alist)
|
|
(push (cons al t) al-alist)))))))
|
|
|
|
(defun gnus-cite-connect-attributions ()
|
|
;; Connect attributions to citations
|
|
|
|
;; No citations have been connected to attribution lines yet.
|
|
(setq gnus-cite-loose-prefix-alist (append gnus-cite-prefix-alist nil))
|
|
|
|
;; Parse current buffer searching for attribution lines.
|
|
;; Find exact supercite citations.
|
|
(gnus-cite-match-attributions 'small nil
|
|
(lambda (prefix tag)
|
|
(when tag
|
|
(concat "\\`"
|
|
(regexp-quote prefix) "[ \t]*"
|
|
(regexp-quote tag) ">"))))
|
|
;; Find loose supercite citations after attributions.
|
|
(gnus-cite-match-attributions 'small t
|
|
(lambda (prefix tag)
|
|
(when tag
|
|
(concat "\\<"
|
|
(regexp-quote tag)
|
|
"\\>"))))
|
|
;; Find loose supercite citations anywhere.
|
|
(gnus-cite-match-attributions 'small nil
|
|
(lambda (prefix tag)
|
|
(when tag
|
|
(concat "\\<"
|
|
(regexp-quote tag)
|
|
"\\>"))))
|
|
;; Find nested citations after attributions.
|
|
(gnus-cite-match-attributions 'small-if-unique t
|
|
(lambda (prefix tag)
|
|
(concat "\\`" (regexp-quote prefix) ".+")))
|
|
;; Find nested citations anywhere.
|
|
(gnus-cite-match-attributions 'small nil
|
|
(lambda (prefix tag)
|
|
(concat "\\`" (regexp-quote prefix) ".+")))
|
|
;; Remove loose prefixes with too few lines.
|
|
(let ((alist gnus-cite-loose-prefix-alist)
|
|
entry)
|
|
(while alist
|
|
(setq entry (car alist)
|
|
alist (cdr alist))
|
|
(when (< (length (cdr entry)) gnus-cite-minimum-match-count)
|
|
(setq gnus-cite-prefix-alist
|
|
(delq entry gnus-cite-prefix-alist)
|
|
gnus-cite-loose-prefix-alist
|
|
(delq entry gnus-cite-loose-prefix-alist)))))
|
|
;; Find flat attributions.
|
|
(gnus-cite-match-attributions 'first t nil)
|
|
;; Find any attributions (are we getting desperate yet?).
|
|
(gnus-cite-match-attributions 'first nil nil))
|
|
|
|
(defun gnus-cite-match-attributions (sort after fun)
|
|
;; Match all loose attributions and citations (SORT AFTER FUN) .
|
|
;;
|
|
;; If SORT is `small', the citation with the shortest prefix will be
|
|
;; used, if it is `first' the first prefix will be used, if it is
|
|
;; `small-if-unique' the shortest prefix will be used if the
|
|
;; attribution line does not share its own prefix with other
|
|
;; loose attribution lines, otherwise the first prefix will be used.
|
|
;;
|
|
;; If AFTER is non-nil, only citations after the attribution line
|
|
;; will be considered.
|
|
;;
|
|
;; If FUN is non-nil, it will be called with the arguments (WROTE
|
|
;; PREFIX TAG) and expected to return a regular expression. Only
|
|
;; citations whose prefix matches the regular expression will be
|
|
;; considered.
|
|
;;
|
|
;; WROTE is the attribution line number.
|
|
;; PREFIX is the attribution line prefix.
|
|
;; TAG is the Supercite tag on the attribution line.
|
|
(let ((atts gnus-cite-loose-attribution-alist)
|
|
(case-fold-search t)
|
|
att wrote in prefix tag regexp limit smallest best size)
|
|
(while atts
|
|
(setq att (car atts)
|
|
atts (cdr atts)
|
|
wrote (nth 0 att)
|
|
in (nth 1 att)
|
|
prefix (nth 2 att)
|
|
tag (nth 3 att)
|
|
regexp (if fun (funcall fun prefix tag) "")
|
|
size (cond ((eq sort 'small) t)
|
|
((eq sort 'first) nil)
|
|
(t (< (length (gnus-cite-find-loose prefix)) 2)))
|
|
limit (if after wrote -1)
|
|
smallest 1000000
|
|
best nil)
|
|
(let ((cites gnus-cite-loose-prefix-alist)
|
|
cite candidate numbers first compare)
|
|
(while cites
|
|
(setq cite (car cites)
|
|
cites (cdr cites)
|
|
candidate (car cite)
|
|
numbers (cdr cite)
|
|
first (apply 'min numbers)
|
|
compare (if size (length candidate) first))
|
|
(and (> first limit)
|
|
regexp
|
|
(string-match regexp candidate)
|
|
(< compare smallest)
|
|
(setq best cite
|
|
smallest compare))))
|
|
(if (null best)
|
|
()
|
|
(setq gnus-cite-loose-attribution-alist
|
|
(delq att gnus-cite-loose-attribution-alist))
|
|
(push (cons wrote (car best)) gnus-cite-attribution-alist)
|
|
(when in
|
|
(push (cons in (car best)) gnus-cite-attribution-alist))
|
|
(when (memq best gnus-cite-loose-prefix-alist)
|
|
(let ((loop gnus-cite-prefix-alist)
|
|
(numbers (cdr best))
|
|
current)
|
|
(setq gnus-cite-loose-prefix-alist
|
|
(delq best gnus-cite-loose-prefix-alist))
|
|
(while loop
|
|
(setq current (car loop)
|
|
loop (cdr loop))
|
|
(if (eq current best)
|
|
()
|
|
(setcdr current (gnus-set-difference (cdr current) numbers))
|
|
(when (null (cdr current))
|
|
(setq gnus-cite-loose-prefix-alist
|
|
(delq current gnus-cite-loose-prefix-alist)
|
|
atts (delq current atts)))))))))))
|
|
|
|
(defun gnus-cite-find-loose (prefix)
|
|
;; Return a list of loose attribution lines prefixed by PREFIX.
|
|
(let* ((atts gnus-cite-loose-attribution-alist)
|
|
att line lines)
|
|
(while atts
|
|
(setq att (car atts)
|
|
line (car att)
|
|
atts (cdr atts))
|
|
(when (string-equal (gnus-cite-find-prefix line) prefix)
|
|
(push line lines)))
|
|
lines))
|
|
|
|
(defun gnus-cite-add-face (number prefix face)
|
|
;; At line NUMBER, ignore PREFIX and add FACE to the rest of the line.
|
|
(when face
|
|
(let ((inhibit-point-motion-hooks t)
|
|
from to overlay)
|
|
(goto-char (point-min))
|
|
(when (zerop (forward-line (1- number)))
|
|
(forward-char (length prefix))
|
|
(skip-chars-forward " \t")
|
|
(setq from (point))
|
|
(end-of-line 1)
|
|
(skip-chars-backward " \t")
|
|
(setq to (point))
|
|
(when (< from to)
|
|
(push (setq overlay (gnus-make-overlay from to))
|
|
gnus-cite-overlay-list)
|
|
(gnus-overlay-put overlay 'evaporate t)
|
|
(gnus-overlay-put overlay 'face face))))))
|
|
|
|
(defun gnus-cite-toggle (prefix)
|
|
(save-excursion
|
|
(set-buffer gnus-article-buffer)
|
|
(gnus-cite-parse-maybe nil t)
|
|
(let ((buffer-read-only nil)
|
|
(numbers (cdr (assoc prefix gnus-cite-prefix-alist)))
|
|
(inhibit-point-motion-hooks t)
|
|
number)
|
|
(while numbers
|
|
(setq number (car numbers)
|
|
numbers (cdr numbers))
|
|
(goto-char (point-min))
|
|
(forward-line (1- number))
|
|
(cond ((get-text-property (point) 'invisible)
|
|
;; Can't remove 'cite from g-a-wash-types here because
|
|
;; multiple citations may be hidden -jas
|
|
(remove-text-properties (point) (progn (forward-line 1) (point))
|
|
gnus-hidden-properties))
|
|
((assq number gnus-cite-attribution-alist))
|
|
(t
|
|
(gnus-add-wash-type 'cite)
|
|
(gnus-add-text-properties
|
|
(point) (progn (forward-line 1) (point))
|
|
(nconc (list 'article-type 'cite)
|
|
gnus-hidden-properties))))
|
|
(let ((gnus-article-mime-handle-alist-1
|
|
gnus-article-mime-handle-alist))
|
|
(gnus-set-mode-line 'article))))))
|
|
|
|
(defun gnus-cite-find-prefix (line)
|
|
;; Return citation prefix for LINE.
|
|
(let ((alist gnus-cite-prefix-alist)
|
|
(prefix "")
|
|
entry)
|
|
(while alist
|
|
(setq entry (car alist)
|
|
alist (cdr alist))
|
|
(when (memq line (cdr entry))
|
|
(setq prefix (car entry))))
|
|
prefix))
|
|
|
|
(defun gnus-cite-localize ()
|
|
"Make the citation variables local to the article buffer."
|
|
(let ((vars '(gnus-cite-article
|
|
gnus-cite-overlay-list gnus-cite-prefix-alist
|
|
gnus-cite-attribution-alist gnus-cite-loose-prefix-alist
|
|
gnus-cite-loose-attribution-alist)))
|
|
(while vars
|
|
(make-local-variable (pop vars)))))
|
|
|
|
(defun gnus-cited-line-p ()
|
|
"Say whether the current line is a cited line."
|
|
(save-excursion
|
|
(beginning-of-line)
|
|
(let ((found nil))
|
|
(dolist (prefix (mapcar 'car gnus-cite-prefix-alist))
|
|
(when (string= (buffer-substring (point) (+ (length prefix) (point)))
|
|
prefix)
|
|
(setq found t)))
|
|
found)))
|
|
|
|
|
|
;; Highlighting of different citation levels in message-mode.
|
|
;; - message-cite-prefix will be overridden if this is enabled.
|
|
|
|
(defvar gnus-message-max-citation-depth
|
|
(length gnus-cite-face-list)
|
|
"Maximum supported level of citation.")
|
|
|
|
(defvar gnus-message-cite-prefix-regexp
|
|
(concat "^\\(?:" message-cite-prefix-regexp "\\)"))
|
|
|
|
(defun gnus-message-search-citation-line (limit)
|
|
"Search for a cited line and set match data accordingly.
|
|
Returns nil if there is no such line before LIMIT, t otherwise."
|
|
(when (re-search-forward gnus-message-cite-prefix-regexp limit t)
|
|
(let ((cdepth (min (length (apply 'concat
|
|
(split-string
|
|
(match-string-no-properties 0)
|
|
"[ \t [:alnum:]]+")))
|
|
gnus-message-max-citation-depth))
|
|
(mlist (make-list (* (1+ gnus-message-max-citation-depth) 2) nil))
|
|
(start (point-at-bol))
|
|
(end (point-at-eol)))
|
|
(setcar mlist start)
|
|
(setcar (cdr mlist) end)
|
|
(setcar (nthcdr (* cdepth 2) mlist) start)
|
|
(setcar (nthcdr (1+ (* cdepth 2)) mlist) end)
|
|
(set-match-data mlist))
|
|
t))
|
|
|
|
(defvar gnus-message-citation-keywords
|
|
;; eval-when-compile ;; This breaks in XEmacs
|
|
`((gnus-message-search-citation-line
|
|
,@(let ((list nil)
|
|
(count 1))
|
|
;; (require 'gnus-cite)
|
|
(dolist (face gnus-cite-face-list (nreverse list))
|
|
(push (list count (list 'quote face) 'prepend t) list)
|
|
(setq count (1+ count)))))) ;;
|
|
"Keywords for highlighting different levels of message citations.")
|
|
|
|
(defvar font-lock-defaults-computed)
|
|
(defvar font-lock-keywords)
|
|
(defvar font-lock-set-defaults)
|
|
|
|
(eval-and-compile
|
|
(unless (featurep 'xemacs)
|
|
(autoload 'font-lock-set-defaults "font-lock")))
|
|
|
|
(define-minor-mode gnus-message-citation-mode
|
|
"Toggle `gnus-message-citation-mode' in current buffer.
|
|
This buffer local minor mode provides additional font-lock support for
|
|
nested citations.
|
|
With prefix ARG, turn `gnus-message-citation-mode' on if and only if ARG
|
|
is positive.
|
|
Automatically turn `font-lock-mode' on when `gnus-message-citation-mode'
|
|
is turned on."
|
|
nil ;; init-value
|
|
"" ;; lighter
|
|
nil ;; keymap
|
|
(when (eq major-mode 'message-mode)
|
|
(let ((defaults (car (if (featurep 'xemacs)
|
|
(get 'message-mode 'font-lock-defaults)
|
|
font-lock-defaults)))
|
|
default keywords)
|
|
(while defaults
|
|
(setq default (if (consp defaults)
|
|
(pop defaults)
|
|
(prog1
|
|
defaults
|
|
(setq defaults nil))))
|
|
(if gnus-message-citation-mode
|
|
;; `gnus-message-citation-keywords' should be the last
|
|
;; elements of the keywords because the others are unlikely
|
|
;; to have the OVERRIDE flags -- XEmacs applies a keyword
|
|
;; having no OVERRIDE flag to matched text even if it has
|
|
;; already other faces, while Emacs doesn't.
|
|
(set (make-local-variable default)
|
|
(append (default-value default)
|
|
gnus-message-citation-keywords))
|
|
(kill-local-variable default))))
|
|
;; Force `font-lock-set-defaults' to update `font-lock-keywords'.
|
|
(if (featurep 'xemacs)
|
|
(progn
|
|
(require 'font-lock)
|
|
(setq font-lock-defaults-computed nil
|
|
font-lock-keywords nil))
|
|
(setq font-lock-set-defaults nil))
|
|
(font-lock-set-defaults)
|
|
(cond ((symbol-value 'font-lock-mode)
|
|
(font-lock-fontify-buffer))
|
|
(gnus-message-citation-mode
|
|
(font-lock-mode 1)))))
|
|
|
|
(defun turn-on-gnus-message-citation-mode ()
|
|
"Turn on `gnus-message-citation-mode'."
|
|
(gnus-message-citation-mode 1))
|
|
(defun turn-off-gnus-message-citation-mode ()
|
|
"Turn off `gnus-message-citation-mode'."
|
|
(gnus-message-citation-mode -1))
|
|
|
|
(gnus-ems-redefine)
|
|
|
|
(provide 'gnus-cite)
|
|
|
|
;; Local Variables:
|
|
;; coding: iso-8859-1
|
|
;; End:
|
|
|
|
;; arch-tag: 1997b044-6067-471e-8c8f-dc903093098a
|
|
;;; gnus-cite.el ends here
|