Re: Inconsistent regex matching with =~ between bash 3.1 and 3.2

[Scott Carpenter]

Paul Jarc spake thusly on 07/11/2007 12:10 PM:
> Scott Carpenter <scottc@movingtofreedom.org> wrote:
> > V="one/two"
> > [[ ! $V =~ ^\.*/ ]] && echo not
>
> 3.1 will remove the backslash as part of basic string parsing, just as
> if this were not part of a [[ command, while 3.2 handles the arguments
> for [[ specially, and will keep the backslash as part of the regexp.
> This will work in both versions:
> pattern='^\.*/'
> [[ ! $V =~ $pattern ]] && echo not
>
>
> paul

Thanks, Paul (and Chet for also responding).

I had seen hints about using a variable but when I tried before posting 
my question I must have used double quotes or no quotes, which didn't 
work.  I tried with single quotes now and works fine, along with 
parentheses to get BASH_REMATCH: '(^\.*/)'

I really appreciate your guys's patience in answering this newbs 
question, especially for something that must be an Extreme FAQ by now 
with the version change.  Keep up the great work -- as an escapee from 
the Windows prison camp, I'm enjoying using and learning more about bash.

Scott