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Re: Cannot form valid test expressions that involve brackets as string c
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From: |
Andreas Schwab |
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Subject: |
Re: Cannot form valid test expressions that involve brackets as string comparison targets |
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Date: |
Thu, 08 Oct 2009 11:16:55 +0200 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) |
Lyall Pearce <Lyall@The-Pearces.com> writes:
> Repeat-By:
>
> basePic="(2008-04)"
> if [ "${basePic:0:1}" = '(' -a "${basePic:4:1}" = ')' ]
> then
> echo "Got brackets"
> fi
case $basePic in "("???")"*) echo "Got brackets";; esac
> Fix:
> Unsure, I think the bracket parsing should not be treated as
> expression delimiters if they are enclosed in quotes?
The quotes are irrelevant for the test builtin, they are already eaten
by the parser.
> If they are bare, then treat as (brackets), if enclosed in quotes,
> treat as "data".
Bare parens would be a syntax error, since they are part of the shell
grammar.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."