(eval-when-compile (require 'cl))
(require 'gnus)
(require 'gnus-range)
(require 'gnus-art)
(require 'message)
(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)
(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)
(put 'gnus-cite-attribution-face 'face-alias 'gnus-cite-attribution)
(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)
(put 'gnus-cite-face-1 'face-alias 'gnus-cite-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)
(put 'gnus-cite-face-2 'face-alias 'gnus-cite-2)
(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)
(put 'gnus-cite-face-3 'face-alias 'gnus-cite-3)
(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)
(put 'gnus-cite-face-4 'face-alias 'gnus-cite-4)
(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)
(put 'gnus-cite-face-5 'face-alias 'gnus-cite-5)
(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)
(put 'gnus-cite-face-6 'face-alias 'gnus-cite-6)
(defface gnus-cite-7 '((((class color)
(background dark))
(:foreground "orange"))
(((class color)
(background light))
(:foreground "SteelBlue4"))
(t
(:italic t)))
"Citation face."
:group 'gnus-cite)
(put 'gnus-cite-face-7 'face-alias 'gnus-cite-7)
(defface gnus-cite-8 '((((class color)
(background dark))
(:foreground "magenta"))
(((class color)
(background light))
(:foreground "magenta"))
(t
(:italic t)))
"Citation face."
:group 'gnus-cite)
(put 'gnus-cite-face-8 'face-alias 'gnus-cite-8)
(defface gnus-cite-9 '((((class color)
(background dark))
(:foreground "violet"))
(((class color)
(background light))
(:foreground "violet"))
(t
(:italic t)))
"Citation face."
:group 'gnus-cite)
(put 'gnus-cite-face-9 'face-alias 'gnus-cite-9)
(defface gnus-cite-10 '((((class color)
(background dark))
(:foreground "medium purple"))
(((class color)
(background light))
(:foreground "medium purple"))
(t
(:italic t)))
"Citation face."
:group 'gnus-cite)
(put 'gnus-cite-face-10 'face-alias 'gnus-cite-10)
(defface gnus-cite-11 '((((class color)
(background dark))
(:foreground "turquoise"))
(((class color)
(background light))
(:foreground "turquoise"))
(t
(:italic t)))
"Citation face."
:group 'gnus-cite)
(put 'gnus-cite-face-11 'face-alias 'gnus-cite-11)
(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))
(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)
(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)
(defvar gnus-cite-article nil)
(defvar gnus-cite-overlay-list nil)
(defvar gnus-cite-prefix-alist nil)
(defvar gnus-cite-attribution-alist nil)
(defvar gnus-cite-loose-prefix-alist nil)
(defvar gnus-cite-loose-attribution-alist nil)
(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)
(defun gnus-article-highlight-citation (&optional force)
"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
(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)
(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))))
(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)))
(goto-char (point-min))
(forward-line (1- number))
(when (re-search-forward gnus-cite-attribution-suffix
(gnus-point-at-eol)
t)
(gnus-article-add-button (match-beginning 1) (match-end 1)
'gnus-cite-toggle prefix))
(gnus-cite-add-face number skip face)
(gnus-cite-add-face number skip gnus-cite-attribution-face))
(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)
(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)))
(article-goto-body)
(push (cons (point-marker) "") marks)
(goto-char (point-max))
(gnus-article-search-signature)
(push (cons (point-marker) "") 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))
(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)))
(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)
(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
(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)))))
(defun gnus-cite-parse-maybe (&optional force no-overlay)
"Always parse the buffer."
(gnus-cite-localize)
(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))
(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 ()
(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 ()
(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)
(while (< (point) max)
(setq begin (point)
guess-limit (progn (skip-chars-forward "^> \t\r\n") (point))
end (gnus-point-at-bol 2)
start end)
(goto-char begin)
(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))))
(when (> end (+ begin gnus-cite-max-prefix))
(setq end (+ begin gnus-cite-max-prefix)))
(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)
(setq end (match-end 0)
prefix (buffer-substring begin end))
(gnus-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)))
(goto-char (point-min))
(when (re-search-forward gnus-cite-unsightly-citation-regexp max t)
(setq begin (count-lines (point-min) (point)))
(setq end (count-lines (point-min) max))
(setq entry nil)
(while (< begin end)
(push begin entry)
(setq begin (1+ begin)))
(push (cons "" entry) alist))
(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)
)
((< (length numbers) gnus-cite-minimum-match-count)
(push entry gnus-cite-prefix-alist))
(t
(push entry
gnus-cite-prefix-alist)
(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)
(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))
(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)
(let ((al (buffer-substring (save-excursion (beginning-of-line 0)
(1+ (point)))
end)))
(if (not (assoc al al-alist))
(progn
(push (list wrote in prefix tag)
gnus-cite-loose-attribution-alist)
(push (cons al t) al-alist))))))))
(defun gnus-cite-connect-attributions ()
(setq gnus-cite-loose-prefix-alist (append gnus-cite-prefix-alist nil))
(gnus-cite-match-attributions 'small nil
(lambda (prefix tag)
(when tag
(concat "\\`"
(regexp-quote prefix) "[ \t]*"
(regexp-quote tag) ">"))))
(gnus-cite-match-attributions 'small t
(lambda (prefix tag)
(when tag
(concat "\\<"
(regexp-quote tag)
"\\>"))))
(gnus-cite-match-attributions 'small nil
(lambda (prefix tag)
(when tag
(concat "\\<"
(regexp-quote tag)
"\\>"))))
(gnus-cite-match-attributions 'small-if-unique t
(lambda (prefix tag)
(concat "\\`" (regexp-quote prefix) ".+")))
(gnus-cite-match-attributions 'small nil
(lambda (prefix tag)
(concat "\\`" (regexp-quote prefix) ".+")))
(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)))))
(gnus-cite-match-attributions 'first t nil)
(gnus-cite-match-attributions 'first nil nil))
(defun gnus-cite-match-attributions (sort after fun)
(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)
(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)
(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)
(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)
(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)))
(gnus-ems-redefine)
(provide 'gnus-cite)