From: Yuri Khan <yuri.v.khan@gmail.com>
To: Steven Arntson <steven@stevenarntson.com>
Cc: "help-gnu-emacs@gnu.org" <help-gnu-emacs@gnu.org>
Subject: Re: renumbering numeric comments
Date: Tue, 28 Oct 2014 10:53:35 +0700 [thread overview]
Message-ID: <CAP_d_8VAm8J+dV=bkxK_2ZT3+099tGQFhSgxBoj+mzdf15p7Fg@mail.gmail.com> (raw)
In-Reply-To: <878uk17y4k.fsf@stevenarntson.com>
On Tue, Oct 28, 2014 at 7:59 AM, Steven Arntson
<steven@stevenarntson.com> wrote:
> In Lilypond, measure numbers are usually (so far in my experience)
> entered as comments at the end of a line in the form `%m__':
>
> These "%m_" numbers are very useful in debugging when the "code" is
> compiled. However, in the above case I later inserted two new measures:
>
> \tempo 4=100
> e4 d e8 f | %m1
> \tempo 4=130
> -----> g8 f e d e f |
> -----> e d c b c d |
> <c a>2. | %m2
> <d e,>2 ~ <d e,>8 e | %m3
> ...
>
> Renumbering everything by hand is a lot of work, because the piece is
> many measures long.
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+ \#)
next prev parent reply other threads:[~2014-10-28 3:53 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 [this message]
2014-10-28 17:11 ` Steven Arntson
[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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