From: Lars Magne Ingebrigtsen <larsi@gnus.org>
To: emacs-devel@gnu.org
Subject: Re: Cleaning up further compat code
Date: Sun, 03 Apr 2016 21:09:04 +0200 [thread overview]
Message-ID: <m3vb3yqzlb.fsf@gnus.org> (raw)
In-Reply-To: <m3wpoey7mf.fsf@gnus.org> (Lars Magne Ingebrigtsen's message of "Sun, 03 Apr 2016 18:33:44 +0200")
I guess we should put off doing cleanups until Emacs 25.1 has been
released, because merging between the branches get kinda hairy if you
change the trunk a lot.
But anyway, I thought I'd just post the two functions that I was using
to do
(if (featurep 'xemacs)
(something)
(something)
(else))
cleanup, in case somebody wants to do some cleanup. The first deletes
the "then" part, and the second deletes the "else" part (which is useful
when it's (if (featurep 'emacs) ...) instead).
Of course, you have to see whether the code makes sense afterwards.
Which is might not if the code is (setq foo (if ...)), for instance.
(defun lars-delete-then ()
"Delete the if statement and the then statement."
(interactive)
(if (looking-at " *(if")
(delete-region (point) (match-end 0))
(search-backward "(if" (line-beginning-position))
(delete-region (point) (+ (point) 3)))
(kill-sexp 2)
(save-excursion
(while (ignore-errors
(forward-sexp 1)
t))
;; Delete the final ")".
(delete-region (point) (1+ (point))))
(save-excursion
(beginning-of-line)
(when (looking-at "\\s-*$")
(delete-region (point) (line-beginning-position 2))))
(save-excursion
(search-backward "(")
(indent-sexp)))
(defun lars-delete-else ()
"Delete the if statement and the else statement."
(interactive)
(if (looking-at " *(if")
(delete-region (point) (match-end 0))
(search-backward "(if" (line-beginning-position))
(delete-region (point) (+ (point) 3)))
(kill-sexp 1)
(let ((start (point)))
(forward-sexp 1)
(while (ignore-errors
(kill-sexp 1)
t))
;; Delete the final ")".
(delete-region (point) (1+ (point)))
(goto-char start)
(save-excursion
(beginning-of-line)
(when (looking-at "\\s-*$")
(delete-region (point) (line-beginning-position 2))))
(save-excursion
(search-backward "(")
(indent-sexp))))
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
next prev parent reply other threads:[~2016-04-03 19:09 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-03 16:29 Cleaning up further compat code Lars Magne Ingebrigtsen
2016-04-03 16:33 ` Lars Magne Ingebrigtsen
2016-04-03 19:09 ` Lars Magne Ingebrigtsen [this message]
2016-04-03 23:21 ` John Wiegley
2016-04-03 16:54 ` Michael Albinus
2016-04-04 7:06 ` Lars Magne Ingebrigtsen
2016-04-04 7:31 ` Michael Albinus
2016-04-04 7:56 ` Lars Magne Ingebrigtsen
2016-04-04 12:35 ` Stefan Monnier
2016-04-04 15:04 ` Eli Zaretskii
2016-04-04 18:13 ` Lars Magne Ingebrigtsen
2016-04-05 0:20 ` Stefan Monnier
2016-04-06 11:30 ` Lars Magne Ingebrigtsen
2016-04-05 0:16 ` Xue Fuqiao
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