how to use character range [] in substitution pattern :gs

how to use character range [] in substitution pattern :gs

[reckoner]

I'm trying to use the the [] character range to substitute for embedded 
parenthesis as in the following:

% echo ${x:gs/[()]/_/}

But This isn't working for some reason. It's not complaining about 
syntax, so I'm pretty sure that I'm using the character range [] 
incorrectly somehow.

Any help appreciated.

Re: how to use character range [] in substitution pattern :gs

[Jérémie Roquet]

Hi,

2012/5/9 reckoner <reckoner@gmail.com>:
> I'm trying to use the the [] character range to substitute for embedded
> parenthesis as in the following:
>
> % echo ${x:gs/[()]/_/}
>
> But This isn't working for some reason. It's not complaining about syntax,
> so I'm pretty sure that I'm using the character range [] incorrectly
> somehow.

By default, the left side of a substitution is a string, not a
pattern. You have to setopt HIST_SUBST_PATTERN to use patterns
instead.

Best regards,

-- 
Jérémie

Re: how to use character range [] in substitution pattern :gs

[Peter Stephenson]

On Wed, 9 May 2012 16:23:20 +0200
Jérémie Roquet <arkanosis@gmail.com> wrote:
> 2012/5/9 reckoner <reckoner@gmail.com>:
> > I'm trying to use the the [] character range to substitute for embedded
> > parenthesis as in the following:
> >
> > % echo ${x:gs/[()]/_/}
> >
> > But This isn't working for some reason. It's not complaining about syntax,
> > so I'm pretty sure that I'm using the character range [] incorrectly
> > somehow.
> 
> By default, the left side of a substitution is a string, not a
> pattern. You have to setopt HIST_SUBST_PATTERN to use patterns
> instead.

Probably better to use the syntax that already handles this:

${x//[\(\)]/_}

-- 
Peter Stephenson <pws@csr.com>            Software Engineer
Tel: +44 (0)1223 692070                   Cambridge Silicon Radio Limited
Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, UK


Member of the CSR plc group of companies. CSR plc registered in England and Wales, registered number 4187346, registered office Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, United Kingdom
More information can be found at www.csr.com. Follow CSR on Twitter at http://twitter.com/CSR_PLC and read our blog at www.csr.com/blog

Re: how to use character range [] in substitution pattern :gs

[reckoner]

On 5/9/2012 7:38 AM, Peter Stephenson wrote:
> On Wed, 9 May 2012 16:23:20 +0200
> Jérémie Roquet<arkanosis@gmail.com>  wrote:
>> 2012/5/9 reckoner<reckoner@gmail.com>:
>>> I'm trying to use the the [] character range to substitute for embedded
>>> parenthesis as in the following:
>>>
>>> % echo ${x:gs/[()]/_/}
>>>
>>> But This isn't working for some reason. It's not complaining about syntax,
>>> so I'm pretty sure that I'm using the character range [] incorrectly
>>> somehow.
>>
>> By default, the left side of a substitution is a string, not a
>> pattern. You have to setopt HIST_SUBST_PATTERN to use patterns
>> instead.
>
> Probably better to use the syntax that already handles this:
>
> ${x//[\(\)]/_}
>

This last one doesn't work for me with or without the HIST_SUBST_PATTERN.

Thanks!

Re: how to use character range [] in substitution pattern :gs

[Peter Stephenson]

On Wed, 9 May 2012 09:00:43 -0700
reckoner <reckoner@gmail.com> wrote:
> > ${x//[\(\)]/_}
> 
> This last one doesn't work for me with or without the HIST_SUBST_PATTERN.

Hmm... there's not a lot to go wrong unless your version of zsh is
*very* old.

% zsh -f
% x="foo(bar())rod"
% print ${x//[\(\)]/_}
foo_bar___rod

-- 
Peter Stephenson <pws@csr.com>            Software Engineer
Tel: +44 (0)1223 692070                   Cambridge Silicon Radio Limited
Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, UK


Member of the CSR plc group of companies. CSR plc registered in England and Wales, registered number 4187346, registered office Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, United Kingdom
More information can be found at www.csr.com. Follow CSR on Twitter at http://twitter.com/CSR_PLC and read our blog at www.csr.com/blog

Re: how to use character range [] in substitution pattern :gs

[reckoner]

On Wednesday, May 09, 2012 9:34:45 AM, Peter Stephenson wrote:
> On Wed, 9 May 2012 09:00:43 -0700
> reckoner<reckoner@gmail.com>  wrote:
>>> ${x//[\(\)]/_}
>>
>> This last one doesn't work for me with or without the HIST_SUBST_PATTERN.
>
> Hmm... there's not a lot to go wrong unless your version of zsh is
> *very* old.
>
> % zsh -f
> % x="foo(bar())rod"
> % print ${x//[\(\)]/_}
> foo_bar___rod
>

here's my version: zsh 4.3.11 (i686-pc-cygwin)

Thanks!

Re[2]: how to use character range [] in substitution pattern :gs

[Vadim Zeitlin]

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On Wed, 09 May 2012 10:12:18 -0700 reckoner <reckoner@gmail.com> wrote:

r> On Wednesday, May 09, 2012 9:34:45 AM, Peter Stephenson wrote:
r> > On Wed, 9 May 2012 09:00:43 -0700
r> > reckoner<reckoner@gmail.com>  wrote:
r> >>> ${x//[\(\)]/_}
r> >>
r> >> This last one doesn't work for me with or without the HIST_SUBST_PATTERN.
r> >
r> > Hmm... there's not a lot to go wrong unless your version of zsh is
r> > very old.
r> >
r> > % zsh -f
r> > % x="foo(bar())rod"
r> > % print ${x//[\(\)]/_}
r> > foo_bar___rod
r> 
r> here's my version: zsh 4.3.11 (i686-pc-cygwin)

 FWIW the above commands work correctly with exactly the same zsh version
for me...

 Regards,
VZ

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