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Re: Inconsistence when checking if a pattern is quoted or not for `==' a


From: Andreas Schwab
Subject: Re: Inconsistence when checking if a pattern is quoted or not for `==' and `=~' in [[ ]]
Date: Thu, 17 Feb 2011 14:20:59 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux)

"Clark J. Wang" <address@hidden> writes:

> See following script output:
>
> bash-4.2# cat quoted-pattern.sh
> [[ .a == \.a* ]] && echo 1  # not quoted
> [[ aa =~ \.a* ]] && echo 2  # quoted
>
> [[ aa =~ \a.  ]] && echo 3  # not quoted
> [[ aa =~ \a\. ]] && echo 4  # quoted
> bash-4.2# bash42 quoted-pattern.sh
> 1
> 3
> bash-4.2#
>
> From my understanding 1 2 3 4 should all be printed out.

"aa" contains no period, so why should it be matched?

Andreas.

-- 
Andreas Schwab, address@hidden
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