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Re: config.status - robust sed substitutions
From: |
Andreas Schwab |
Subject: |
Re: config.status - robust sed substitutions |
Date: |
Wed, 26 Feb 2003 22:58:32 +0100 |
User-agent: |
Gnus/5.090015 (Oort Gnus v0.15) Emacs/21.3.50 |
"Robert Anderson" <address@hidden> writes:
|> I submit for your critique an idea for making the generated sed
|> commands within config.status be robust to "special" characters
|> such as the delimiter - which happens to have been chosen as ","
|> - as well as sed metacharacters '&' and '\'.
|>
|> This would be implemented as a small standalone script generated
|> by config.status in /tmp, but the following gives the idea concisely:
|>
|> #!/bin/ash
|>
|> _quote_for_sed()
|> {
|> echo "$1"| \
Look out for echo meta character.
|> sed -e 's,\\,\\\\,g' | \
|> sed -e 's,&,\\&,g' | \
|> sed -e 's,\,,\\\,,g'
|> }
sed -e 's/[\&,]/\\&/g'
is much faster and works as well.
Andreas.
--
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux AG, Deutschherrnstr. 15-19, D-90429 Nürnberg
Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
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