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

[Peter Stephenson <Peter.Stephenson@xxxxxxx>]

On Wed, 9 May 2012 16:23:20 +0200
Jérémie Roquet <arkanosis@xxxxxxxxx> wrote:
> 2012/5/9 reckoner <reckoner@xxxxxxxxx>:
> > 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@xxxxxxx>            Software Engineer
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