From: Vinicius Jose Latorre <viniciusjl@ig.com.br>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: "Óscar Fuentes" <ofv@wanadoo.es>,
"GNU Emacs (devel)" <emacs-devel@gnu.org>
Subject: Re: Proposal: diff-remove-trailing-blanks
Date: Fri, 09 May 2008 21:45:44 -0300 [thread overview]
Message-ID: <4824F038.9090105@ig.com.br> (raw)
In-Reply-To: <jwvprryhnuo.fsf-monnier+emacs@gnu.org>
[-- Attachment #1: Type: text/plain, Size: 646 bytes --]
>>>> Well, can I install diff-kill-trailing-whitespace
>>>> and diff-show-trailing-whitespace into diff-mode?
>>>>
>>> I haven't had time to look at the code, but assuming it's clean enough,
>>> I don't see any problem with it,
>>>
>> Ok, shouldn't Óscar Fuentes <ofv@wanadoo.es> sign papers before
>> code installation?
>>
>
> I think so. But I haven't kept track of this thread enough to know
> which part of the code is his and which is yours.
>
Attached there are the following files:
original.el --- contains the original proposal from Óscar Fuentes
modified.el --- contains the modified proposal by me
[-- Attachment #2: original.el --]
[-- Type: text/plain, Size: 1595 bytes --]
(defun diff-remove-trailing-blanks ()
"When on a buffer that contains a diff, inspects the
differences and removes trailing whitespace (spaces, tabs) from
the lines modified or introduced by this diff. Shows a message
with the name of the altered buffers, which are unsaved. If a
file referenced on the diff has no buffer and needs to be fixed,
a buffer visiting that file is created."
(interactive)
(goto-char (point-min))
;; We assume that the diff header has no trailing whitespace.
(setq modified-buffers nil)
(setq white-positions nil)
(while (re-search-forward "^[+!>].*[ \t]+$" (point-max) t)
(save-excursion
(destructuring-bind (buf line-offset pos src dst &optional switched)
(diff-find-source-location t t)
(when line-offset
(set-buffer buf)
(save-excursion
(goto-char (+ (car pos) (cdr src)))
(beginning-of-line)
(when (re-search-forward "\\([ \t]+\\)$" (line-end-position) t)
(when (not (member buf modified-buffers))
(push buf modified-buffers))
(goto-char (match-end 0))
(push (point-marker) white-positions)
(goto-char (match-beginning 0))
(push (point-marker) white-positions)
(push buf white-positions)))))))
(while white-positions
(save-excursion
(set-buffer (pop white-positions))
(delete-region (pop white-positions) (pop white-positions))))
(if modified-buffers
(let ((msg "Deleted new trailing whitespace from:"))
(dolist (f modified-buffers)
(setq msg (concat msg " `" (buffer-name f) "'")))
(message "%s" msg))
(message "No fixes needed.")))
[-- Attachment #3: modified.el --]
[-- Type: text/plain, Size: 1857 bytes --]
(defun diff-kill-trailing-blanks ()
"Inspect the current diff and remove trailing whitespace (spaces, tabs).
That is, it removes trailing whitespaces from the lines modified or introduced
by this diff.
Shows a message with the name of the altered buffers, which are unsaved.
If a file referenced on the diff has no buffer and needs to be fixed,
a buffer visiting that file is created."
(interactive)
(save-excursion
;; We assume that the diff header has no trailing whitespace.
(let (modified-buffers white-positions)
(goto-char (point-min))
(while (re-search-forward "^[+!>].*?[ \t]+$" (point-max) t)
(save-excursion
(destructuring-bind (buf line-offset pos src dst &optional switched)
(diff-find-source-location t t)
(when line-offset
(save-excursion
(set-buffer buf)
(goto-char (+ (car pos) (cdr src)))
(beginning-of-line)
(when (re-search-forward "\\([ \t]+\\)$" (line-end-position) t)
(unless (member buf modified-buffers)
(push buf modified-buffers))
(push buf white-positions)
(push (match-beginning 0) white-positions)
(push (match-end 0) white-positions)))))))
(setq white-positions (nreverse white-positions))
(while white-positions
(save-excursion
(set-buffer (pop white-positions))
(delete-region (pop white-positions) (pop white-positions))))
(if modified-buffers
(message "Deleted trailing whitespace from: %s"
(mapconcat
#'(lambda (buf)
(format "`%s'" (buffer-name buf)))
modified-buffers
" "))
(message "No fixes needed.")))))
(defun diff-show-trailing-blanks ()
"Show trailing blanks in modified lines for diff-mode."
(interactive)
(let ((whitespace-style '(trailing))
(whitespace-trailing-regexp "^[+!>].*?\\([\t ]+\\)$"))
(whitespace-mode 1))) ; display trailing blanks in diff buffer
prev parent reply other threads:[~2008-05-10 0:45 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-26 14:59 Proposal: diff-remove-trailing-blanks Óscar Fuentes
2008-04-26 18:44 ` Dan Nicolaescu
2008-04-26 19:38 ` Óscar Fuentes
2008-04-26 19:50 ` Vinicius Jose Latorre
2008-04-26 20:08 ` Óscar Fuentes
[not found] ` <4813A244.4050908@ig.com.br>
2008-04-26 22:07 ` Óscar Fuentes
2008-04-27 2:30 ` Vinicius Jose Latorre
2008-04-27 2:59 ` Vinicius Jose Latorre
2008-04-27 4:04 ` Óscar Fuentes
[not found] ` <48146DF3.3090706@ig.com.br>
[not found] ` <48147BC0.6080406@ig.com.br>
2008-04-27 15:15 ` Óscar Fuentes
2008-04-27 17:30 ` Vinicius Jose Latorre
2008-04-27 20:05 ` Óscar Fuentes
2008-05-01 0:34 ` Vinicius Jose Latorre
2008-05-01 1:04 ` Óscar Fuentes
2008-05-02 14:22 ` Stefan Monnier
2008-05-07 0:25 ` Vinicius Jose Latorre
2008-05-07 2:04 ` Stefan Monnier
2008-05-10 0:45 ` Vinicius Jose Latorre [this message]
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