Gentoo Archives: gentoo-dev

From: Alec Warner <antarus@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] QA checks merged into portage SVN
Date: Tue, 09 Jan 2007 06:10:21
Message-Id: 45A33160.1090208@gentoo.org
In Reply to: [gentoo-dev] QA checks merged into portage SVN by Alec Warner
1 Alec Warner wrote:
2 >
3 > The correct way to mess with each is to save the old value (IFS) or
4 > restore the previous setting (shopts).
5 >
6 > local OLDIFS="$IFS"
7 > ...do stuff
8 > IFS="$OLDIFS"
9 >
10 > set -s extglob
11 > ...do stuff
12 > set -u extglob
13 >
14 > If you change a bunch of shell options or have no idea what you changed;
15 > you can also do fun magic like:
16 >
17 > local SHOPTS=$(shopt -p)
18 > ..do stuff
19 > eval "$SHOPTS"
20 >
21 > which should restore the previous options.
22 >
23 Note, the examples above could be improved by prefixing your variables
24 (you don't want global collisions, trust me)
25
26 So fex KDE_SHOPTS or KDE_OLD_IFS instead of just OLD_IFS.
27
28 > Thanks,
29 > -Alec Warner
30
31 --
32 gentoo-dev@g.o mailing list

Replies

Subject Author
Re: [gentoo-dev] QA checks merged into portage SVN Alec Warner <antarus@g.o>