jimb@drutx.ATT.COM (jim bryant) (03/03/88)
i'm trying to write a simple function that will set "fill-prefix"
before calling "fill-region". for example
# this is the comment block
# that i would like to fill
# it probably would fit on 2 lines
how do i set "fill-prefix" to be the string between the beginning
of the line and the first non-whitespace character?
here's my function:
(defun fill-unix-comment-block ()
(interactive)
(save-excursion
(beginning-of-line)
(if (looking-at "#")
(progn
(skip-chars-forward " \t")
(setq fill-prefix ???????what?????????)
(fill-paragraph)
(setq fill-prefix nil))
(fill-paragraph))))
thanks!
jim bryant
ihnp4!drutx!jimbRam-Ashwin@cs.yale.edu (Ashwin Ram) (03/06/88)
In article <6878@drutx.ATT.COM>, jimb@drutx (jim bryant) writes: > > i'm trying to write a simple function that will set "fill-prefix" > before calling "fill-region". for example > > # this is the comment block > # that i would like to fill > # it probably would fit on 2 lines > > how do i set "fill-prefix" to be the string between the beginning > of the line and the first non-whitespace character? Try: (defun fill-unix-comment-paragraph () "Fill current paragraph as a Unix comment paragraph." (interactive) (let ((fill-prefix (save-excursion (beginning-of-line) (buffer-substring (point) (progn (skip-chars-forward "# \t") (point)))))) (fill-paragraph nil))) -- Ashwin Ram -- ARPA: Ram-Ashwin@cs.yale.edu UUCP: {decvax,ucbvax,harvard,cmcl2,...}!yale!Ram-Ashwin BITNET: Ram@yalecs
wolfgang@mgm.mit.edu (Wolfgang Rupprecht) (03/06/88)
In article <6878@drutx.ATT.COM> jimb@drutx.ATT.COM (jim bryant) writes: >i'm trying to write a simple function that will set "fill-prefix" >before calling "fill-region". for example ># this is the comment block ># that i would like to fill ># it probably would fit on 2 lines Ok, I'll bite. Here is a slightly rearranged version of your code, with the ????'s filled in. # this is the comment block that i would like to fill it probably # would fit on 2 lines (defun fill-unix-comment-block () "How about some snazzy documentation string here." (interactive) (save-excursion (beginning-of-line) (if (looking-at "#") (progn (forward-char 1) (skip-chars-forward " \t") (let ((fill-prefix)) ;don't trash the real fill-prefix! (set-fill-prefix) (fill-paragraph nil))) (fill-paragraph nil)))) ; With a bit more work, you could make the fill-prefix detection much ; more general, and not hardwire the "^#[ \t]*" regexp into the code. (defvar fill-comment-block-regexp "^a-zA-Z0-9" "*Regexp to identify the fill-prefix for the fill-comment-block function.") (defun fill-comment-block () "Fill a comment block. Uses fill-comment-block-regexp to identify the fill-prefix. If none found, uses the default fill-prefix." (interactive) (save-excursion (beginning-of-line) (if (looking-at (concat "[" fill-comment-block-regexp "]")) (progn (skip-chars-forward fill-comment-block-regexp) (let ((fill-prefix)) (set-fill-prefix) (fill-paragraph nil))) (fill-paragraph nil)))) --- Wolfgang Rupprecht ARPA: wolfgang@mgm.mit.edu (IP 18.82.0.114) 326 Commonwealth Ave. UUCP: mit-eddie!mgm.mit.edu!wolfgang Boston, Ma. 02115 TEL: (617) 267-4365