Re^2: Only sometimes deprecated? "Unescaped left brace in regex is deprecated"

Thanks! :)

hmm, the perldelta doesn't talk about quantifiers, and the ambiguity would already have existed before.

I thought it's deprecated to facilitate parsing extended syntax like /abc(?{print "Hi Mom!";})def/

see perlretut for other examples

so I'm not sure if it's about quantifiers...

Cheers Rolf
_{(addicted to the Perl Programming Language and ☆☆☆☆ :)

Je suis Charlie!}

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Re^3: Only sometimes deprecated? "Unescaped left brace in regex is deprecated" by Eily (Monsignor) on Jun 02, 2017 at 16:37 UTC
Because (? is invalid syntax on its own, in any (?X pattern the X is unambiguously special or incorrect, but never litteral. perlre however does talk about extending the quantifier syntax. like making the lower bound of a quantifier optional And any new syntax that's not a modifier can be added with a (?X pattern. That's why I concluded that disallowing unescaped litteral { was probably an opening toward new quantifier syntax (because { only introduces quantifiers). I thought of something like `/.{{!($_ % 3)}}/` instead of `/(?:.{3})/` (it's harder to read though ...), or even `"3ABCD" =~ /(\d)(.{{$1}})(.)/; #(3,"ABC", "D")`. But that's wild guesswork PS: How do you like all those unbalanced left tokens? ^^"	[reply] [d/l] [select]
Re^4: Only sometimes deprecated? "Unescaped left brace in regex is deprecated" by LanX (Saint) on Jun 02, 2017 at 18:59 UTC
Thanks, in hindsight all these explanations and reasonings make sense. I just expect documentation to be clearer. Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :) Je suis Charlie!}	[reply]