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Re: Conditional Regexp matching problem in 3.2
From: |
Kevin F. Quinn |
Subject: |
Re: Conditional Regexp matching problem in 3.2 |
Date: |
Tue, 23 Jan 2007 19:50:53 +0100 |
On Tue, 23 Jan 2007 11:04:58 -0500
Chet Ramey <chet.ramey@case.edu> wrote:
> One of the changes between bash-3.1 and bash-3.2 was to unify the
> handling of the pattern in the `==' and `=~' conditional command
> operators. Pattern characters on the rhs are quoted to represent
> themselves (remove their special pattern meaning). This is how ==
> has always worked.
I don't get this; I must be missing something. If I do, in bash-3.1:
$ V="alphabet"
$ [[ $V == alphabet ]] && echo yes
yes
$ [[ $V == "alphabet" ]] && echo yes
yes
$ [[ $V == 'alphabet' ]] && echo yes
yes
$ [[ $V =~ alphabet ]] && echo yes
yes
$ [[ $V =~ "alphabet" ]] && echo yes
yes
$ [[ $V =~ 'alphabet' ]] && echo yes
yes
$
yet if I try the same in 3.2:
$ V="alphabet"
$ [[ $V == alphabet ]] && echo yes
yes
$ [[ $V == "alphabet" ]] && echo yes
yes
$ [[ $V == 'alphabet' ]] && echo yes
yes
$ [[ $V =~ alphabet ]] && echo yes
yes
$ [[ $V =~ "alphabet" ]] && echo yes
$ [[ $V =~ 'alphabet' ]] && echo yes
$
which to me looks like the two operators are not treating quotes the
same way.
--
Kevin F. Quinn
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