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Re: [PATCH] deprecate ?PATTERN?

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November 24, 2010 01:00
Re: [PATCH] deprecate ?PATTERN?
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On Wed, Nov 24, 2010 at 09:27:50AM +0100, Rafael Garcia-Suarez wrote:
> On 24 November 2010 08:57, Zefram <> wrote:
> > In discussing (on #p5p) possible new operators, we ran into the issue
> > that the obscure ?PATTERN? syntax gets in the way of most uses we could
> > potentially make of the question mark.  It was proposed that we could
> > deprecate that syntax to reclaim the question mark.  Attached patch
> > does so.  It leaves the match-once semantics still available through
> > m?PATTERN?.
> I'd be a bit nostalgic of this venerable piece of sed-like syntax, but
> I would not object to the deprecation.
> Can you give an example of future usage of "?" you were thinking about ?

I suggest we first have some actual cases where having "?" is a 
hindrance. IIRC, in a recent situation where it was a "hindrance"
it was that in the many proposed names for the '&&->' operator, '->?'
would conflict with existing syntax.

But there were enough other possibilities left for many rounds of
bikeshedding. I did not get the impression ?PATTERN? really stood
in the way of progess.

I do not have much love for ?PATTERN?, which, except for some obfuscation,
I have never used, nor have I encoutered it on code I had to maintain.
But this smells a bit like deprecation for the sake of deprecation, and
that always makes me uneasy.


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