From: Eli Zaretskii <eliz@gnu.org>
To: "Stephen J. Turnbull" <stephen@xemacs.org>
Cc: ams@gnu.org, emacs-devel@gnu.org
Subject: Re: hexl-mode: searching for multi byte sequence?
Date: Tue, 14 Jul 2015 17:51:17 +0300 [thread overview]
Message-ID: <83zj2y7py2.fsf@gnu.org> (raw)
In-Reply-To: <87fv4rfc8s.fsf@uwakimon.sk.tsukuba.ac.jp>
> From: "Stephen J. Turnbull" <stephen@xemacs.org>
> Date: Tue, 14 Jul 2015 16:07:47 +0900
> Cc: emacs-devel@gnu.org
>
> Alfred M. Szmidt writes:
> > Is there some way in hexl-mode to search for a (hex, octal, ...) byte
> > sequence? Currently, C-s behaves a bit strange in at least two regards:
> >
> > 1) If file contains the byte sequence #xDEADBEAF, depending on how
> > they are aligned (odd or even word), one has to look for "DEAD
> > BEAF" and "DE ADBE AF".
>
> C-u C-s de\(.\n\)*ad\(.\|\n\)*be\(.\|\n\)*af
>
> is what I'd use. It has obvious defects, and it would be nice if
> hexl-mode provided something a little less greedy (eg a transformation
> to a 3-armed disjunction allowing at most one newline plus handling
> the leading byte number after the newline).
Hexl already provides something similar, see
hexl-isearch-search-function. It allows to search in the text column
strings that span multiple lines, for example. It should be enhanced
to support Alfred's use case (and somebody please document it!).
prev parent reply other threads:[~2015-07-14 14:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-13 17:55 hexl-mode: searching for multi byte sequence? Alfred M. Szmidt
2015-07-14 7:07 ` Stephen J. Turnbull
2015-07-14 14:51 ` Eli Zaretskii [this message]
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