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Re: regexp hell
From: |
Filipp Gunbin |
Subject: |
Re: regexp hell |
Date: |
Fri, 28 Dec 2012 11:25:42 +0400 |
User-agent: |
Gnus/5.1299999999999999 (Gnus v5.13) Emacs/24.2 (cygwin) |
On 28/12/2012 10:57, B. T. Raven wrote:
> I am trying to byte-compile my .emacs for the first time and I see the
> complaint "replace-string is to be used interactively..." or something.
> I am using the form:
>
> (replace-string "\\" "\\\\" nil (point-min) (point-max))
>
> in a function and it seems to work but I can't make any equivalent re's
> work in re-search-forward (the suggested equivalent to be used in a
> lisp programm). I can't get past the "trailing backslash" error. Is
> there something kosher for the above replace-string form?
>
> Thanks,
>
> Ed
>
You can use `search-forward' (which searches for string, not for regexp),
as it is suggested in documentation for `replace-string':
(while (search-forward FROM-STRING nil t)
(replace-match TO-STRING nil t))
Then with the above strings it should replace one backslash with two.
But if you still need to write a regexp, it seems that you need to
double the amount of backslashes. To include a backslash in a regexp you
need to prefix it with another backslash and each backslash should be
prefixed with another one when written in a lisp program (so, 4
backslashes in a program for a single one in regexp).
--
Filipp Gunbin
- regexp hell, B. T. Raven, 2012/12/28
- Re: regexp hell,
Filipp Gunbin <=
- Message not available