Parameter substitution bug

Parameter substitution bug

[Mark Lentczner]

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Strangely I ran across this issue in the real world: A doubly nested
parameter substitution with an inner glob pattern (breath) fails /only
when in double quotes/! That is, these two expressions produce
different results:

${f%${f#?}}   --vs--  "${f%${f#?}}"

Strangely, that is the simplest case I get to fail.

The following script walks through the issue, and if run with bash,
ksh, or busybox exhibits those two expressions as producing the same
result.

- Mark
(Note: Not on mailing list, so please reply all to include me!)

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Re: Parameter substitution bug

[Herbert Xu]

On Mon, Jan 21, 2013 at 09:36:07PM +0000, Mark Lentczner wrote:
> Strangely I ran across this issue in the real world: A doubly nested
> parameter substitution with an inner glob pattern (breath) fails /only
> when in double quotes/! That is, these two expressions produce
> different results:
> 
> ${f%${f#?}}   --vs--  "${f%${f#?}}"
> 
> Strangely, that is the simplest case I get to fail.
> 
> The following script walks through the issue, and if run with bash,
> ksh, or busybox exhibits those two expressions as producing the same
> result.

This should be fixed now.

Thanks,
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt