From: Steven Arntson <steven@stevenarntson.com>
To: help-gnu-emacs@gnu.org
Subject: Re: renumbering numeric comments
Date: Tue, 28 Oct 2014 10:11:43 -0700 [thread overview]
Message-ID: <878uk03yr4.fsf@stevenarntson.com> (raw)
In-Reply-To: CAP_d_8VAm8J+dV=bkxK_2ZT3+099tGQFhSgxBoj+mzdf15p7Fg@mail.gmail.com
Yuri Khan <yuri.v.khan@gmail.com> writes:
> 1. Select the part of document you want to renumber in, or go the the
> beginning of the buffer to renumber throughout the whole document.
> 2. Hit C-M-% (for “query-replace-regexp”).
> 3. Compose a regular expression that matches the parts of text you
> want to replace, with some context. I don’t know Lilypond and assume
> that measures end with a vertical bar and by convention it’s the last
> significant character on the line, followed by a single space,
> followed by a percent sign, then the letter m, then a sequence of
> digits until the end of line. A new measure will end at the vertical
> bar, with the space and comment omitted. So the regexp is: “|\(
> %m[0-9]+\)?$”. Enter this as the replace regexp.
> 4. In the replacement string, use the \# marker where you want a
> sequential number inserted: “| %m\#”
>
> This is almost what you want but numbers starting with 0. If you want
> 1-based numbering, you’ll need to surround the \# marker with an
> expression that adds 1: “| %m\,(+ 1 \#)”
>
> The part after “\,” can be any Emacs Lisp expression. The one above
> just happens to add (+) one (1) to the number of replacements done
> (\#) and can be abbreviated as “(1+ \#)”. (If you wanted to renumber
> starting with 200, you would write “(+ 200 \#)”, and for numbering
> starting with 301 and using only odd numbers, “(+ 301 (* 2 \#))”.)
>
> Final recipe:
>
> query-replace-regexp
> |\( %m[0-9]+\)?$
> | %m\,(1+ \#)
Thank you so much for this. I have only the barest conception of how
regexps work, but this seems like as excellent an introduction as I
could have hoped for!
-steven
next prev parent reply other threads:[~2014-10-28 17:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-28 1:59 renumbering numeric comments Steven Arntson
2014-10-28 3:53 ` Yuri Khan
2014-10-28 17:11 ` Steven Arntson [this message]
[not found] <mailman.12210.1414461603.1147.help-gnu-emacs@gnu.org>
2014-10-28 8:12 ` Pascal J. Bourguignon
2014-10-28 17:13 ` Steven Arntson
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