[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Inconsistence when checking if a pattern is quoted or not for `==' a
|
From: |
Clark J. Wang |
|
Subject: |
Re: Inconsistence when checking if a pattern is quoted or not for `==' and `=~' in [[ ]] |
|
Date: |
Thu, 17 Feb 2011 22:35:31 +0800 |
On Thu, Feb 17, 2011 at 9:20 PM, Andreas Schwab <schwab@linux-m68k.org>wrote:
> "Clark J. Wang" <dearvoid@gmail.com> 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?
>
>
If it should not be matched why I got 3 printed out?
> 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."
>
--
Clark