[asterisk-dev] Better pattern matching

[Vasil Kolev]

В чт, 2007-08-02 в 11:26 -0400, Leif Madsen написа:
> On Thursday 02 August 2007 10:55:58 am Vasil Kolev wrote:
> > В чт, 2007-08-02 в 10:26 -0400, Leif Madsen написа:
> > > 2) The ability to have an alias or shortcut to say, "use the previous
> > > pattern match", similar to the 'n' priority (or rather, the 's'
> > > priority), so I can write a complex pattern match, BUT only have to write
> > > it on the first priority
> > >
> > > exten => nancy|jim|james,1,NoOp()
> > > exten => p,n,Verbose(1|My current EXTEN is ${EXTEN})
> > > exten => p,n,Playback(silence/1&tt-weasels)
> > > exten => p,n,Hangup()
> >
> > Please rethink this - it would make grep-ing through the files useless,
> > and most of the time it's the fastest way to see what goes where
> > (especially if you need to go through multiple files).
> 
> If you wanted to specify the pattern match on every line, nothing I've 
> suggested here prevents that, just like the ability to have 'n' doesn't stop 
> you from explicitly defining the priority numbers.
> 

The problem is the bad habit creation... For example, you have a big
config, and you start using this to simplify it - then it grows, grows,
you try using grep and you're screwed. 

Or putting it shorter - there's no considerable gain from this (even
will break formatting and make it a bit harder to read), and will create
nice possibilities for abuse and problems...

I mean, easy grepability/parsebility with cmdline tools is probably one
of the (not many :) ) plus sides of the current extensions language.
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