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Commit b3a0387c authored by Richard M. Stallman's avatar Richard M. Stallman
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(fill-individual-paragraphs-prefix): New 

subroutine taken from fill-individual-paragraphs.  Really check that
JUST-ONE-LINE-PREFIX is longer than TWO-LINES-PREFIX in its whitespace.
(fill-individual-paragraphs-citation): New subroutine.
(fill-nonuniform-paragraphs): Arg MAILP renamed.
(fill-individual-paragraphs): Arg MAILP renamed.
parent 706e3d85
Hide whitespace changes
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Showing with 69 additions and 45 deletions
lisp/textmodes/fill.el
View file @ b3a0387c
......@@ -947,7 +947,7 @@ Arguments BEGIN and END are optional; default is the whole buffer."
(forward-line 1)))))
(defun fill-nonuniform-paragraphs (min max &optional justifyp mailp)
(defun fill-nonuniform-paragraphs (min max &optional justifyp citation-regexp)
"Fill paragraphs within the region, allowing varying indentation within each.
This command divides the region into \"paragraphs\",
only at paragraph-separator lines, then fills each paragraph
......@@ -958,13 +958,16 @@ When calling from a program, pass range to fill as first two arguments.
Optional third and fourth arguments JUSTIFY and MAIL-FLAG:
JUSTIFY to justify paragraphs (prefix arg),
MAIL-FLAG for a mail message, i. e. don't fill header lines."
When filling a mail message, pass a regexp for CITATION-REGEXP
which will match the prefix of a line which is a citation marker
plus whitespace, but no other kind of prefix.
Also, if CITATION-REGEXP is non-nil, don't fill header lines."
(interactive (list (region-beginning) (region-end)
(if current-prefix-arg 'full)))
(let ((fill-individual-varying-indent t))
(fill-individual-paragraphs min max justifyp mailp)))
(fill-individual-paragraphs min max justifyp citation-regexp)))
(defun fill-individual-paragraphs (min max &optional justify mailp)
(defun fill-individual-paragraphs (min max &optional justify citation-regexp)
"Fill paragraphs of uniform indentation within the region.
This command divides the region into \"paragraphs\",
treating every change in indentation level or prefix as a paragraph boundary,
......@@ -983,7 +986,10 @@ as the first two arguments.
Optional third and fourth arguments JUSTIFY and MAIL-FLAG:
JUSTIFY to justify paragraphs (prefix arg),
MAIL-FLAG for a mail message, i. e. don't fill header lines."
When filling a mail message, pass a regexp for CITATION-REGEXP
which will match the prefix of a line which is a citation marker
plus whitespace, but no other kind of prefix.
Also, if CITATION-REGEXP is non-nil, don't fill header lines."
(interactive (list (region-beginning) (region-end)
(if current-prefix-arg 'full)))
(save-restriction
......@@ -991,7 +997,7 @@ MAIL-FLAG for a mail message, i. e. don't fill header lines."
(goto-char min)
(beginning-of-line)
(narrow-to-region (point) max)
(if mailp
(if citation-regexp
(while (and (not (eobp))
(or (looking-at "[ \t]*[^ \t\n]+:")
(looking-at "[ \t]*$")))
......@@ -1020,45 +1026,7 @@ MAIL-FLAG for a mail message, i. e. don't fill header lines."
(if (not (and fill-prefix
(looking-at fill-prefix-regexp)))
(setq fill-prefix
;; Get the prefix from just the first line
;; ordinarily.
;; But if using two lines gives us a shorter
;; result, lacking some whitespace at the end,
;; use that.
(or (let ((adaptive-fill-first-line-regexp "")
just-one-line-prefix
two-lines-prefix
adjusted-two-lines-prefix)
(setq just-one-line-prefix
(fill-context-prefix
(point)
(save-excursion (forward-line 1)
(point))))
(setq two-lines-prefix
(fill-context-prefix
(point)
(save-excursion (forward-line 2)
(point))))
(when two-lines-prefix
(setq adjusted-two-lines-prefix
(substring two-lines-prefix 0
(string-match "[ \t]*\\'"
two-lines-prefix))))
;; See if JUST-ONE-LINE-PREFIX
;; is the same as TWO-LINES-PREFIX
;; except perhaps with longer whitespace.
(if (and just-one-line-prefix
two-lines-prefix
(string-match (concat "\\`"
(regexp-quote adjusted-two-lines-prefix)
"[ \t]*\\'")
just-one-line-prefix))
two-lines-prefix
just-one-line-prefix))
(buffer-substring
(point)
(save-excursion (skip-chars-forward " \t")
(point))))
(fill-individual-paragraphs-prefix citation-regexp)
fill-prefix-regexp (regexp-quote fill-prefix)))
(forward-line 1)
(if (bolp)
......@@ -1089,4 +1057,60 @@ MAIL-FLAG for a mail message, i. e. don't fill header lines."
(fill-region-as-paragraph start (point) justify)
(or had-newline (delete-char -1))))))))
(defun fill-individual-paragraphs-prefix (citation-regexp)
(or (let ((adaptive-fill-first-line-regexp "")
just-one-line-prefix
two-lines-prefix
one-line-citation-part
two-lines-citation-part
adjusted-two-lines-citation-part)
(setq just-one-line-prefix
(fill-context-prefix
(point)
(save-excursion (forward-line 1)
(point))))
(setq two-lines-prefix
(fill-context-prefix
(point)
(save-excursion (forward-line 2)
(point))))
(when just-one-line-prefix
(setq one-line-citation-part
(if citation-regexp
(fill-individual-paragraphs-citation just-one-line-prefix
citation-regexp)
just-one-line-prefix)))
(when two-lines-prefix
(setq two-lines-citation-part
(if citation-regexp
(fill-individual-paragraphs-citation two-lines-prefix
citation-regexp)
just-one-line-prefix))
(setq adjusted-two-lines-citation-part
(substring two-lines-citation-part 0
(string-match "[ \t]*\\'"
two-lines-citation-part))))
;; See if the citation part of JUST-ONE-LINE-PREFIX
;; is the same as that of TWO-LINES-PREFIX,
;; except perhaps with longer whitespace.
(if (and just-one-line-prefix
two-lines-prefix
(string-match (concat "\\`"
(regexp-quote adjusted-two-lines-citation-part)
"[ \t]*\\'")
one-line-citation-part)
(>= (string-width one-line-citation-part)
(string-width two-lines-citation-part)))
two-lines-prefix
just-one-line-prefix))
(buffer-substring
(point)
(save-excursion (skip-chars-forward " \t")
(point)))))
(defun fill-individual-paragraphs-citation (string citation-regexp)
(string-match citation-regexp
string)
(match-string 0 string))
;;; fill.el ends here
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