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/<[]>/, the empty character class, should be synonymous with /<!>/ but instead fails at parse time in Rakudo #2636

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p6rt opened this issue Feb 2, 2012 · 5 comments
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/<[]>/, the empty character class, should be synonymous with /<!>/ but instead fails at parse time in Rakudo #2636

p6rt opened this issue Feb 2, 2012 · 5 comments
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@p6rt
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p6rt commented Feb 2, 2012

Migrated from rt.perl.org#109674 (status was 'resolved')

Searchable as RT109674$
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p6rt commented Feb 2, 2012

From @masak

<TimToady> nom​: say so 'a' ~~ /<[]>/
<p6eval> nom ce5cca​: OUTPUT«===SORRY!===␤StopIteration␤»
<TimToady> std​: say so 'a' ~~ /<[]>/
<p6eval> std 48335fc​: OUTPUT«ok 00​:01 112m␤»
* masak submits rakudobug
<masak> it should simply allow /<[]>/ as meaning, hm, I guess /<!>/ :)

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p6rt commented Aug 27, 2014

@coke - Status changed from 'new' to 'open'

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p6rt commented Jan 1, 2015

From @usev6

This seems to work now (<[]> behaves like <!>)​:

$ perl6 -e 'say so "a" ~~ /<[]>/'
False

$ perl6 -e 'say so "abc" ~~ /a <[]>/'
False

$ perl6 -e 'say so "" ~~ /<[]>/'
False

I added two tests to S05-mass/stdrules.t with commit Raku/roast@9bad4dd1af

I'm closing this ticket now.

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@p6rt
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p6rt commented Jan 1, 2015

From @usev6

This seems to work now (<[]> behaves like <!>)​:

$ perl6 -e 'say so "a" ~~ /<[]>/'
False

$ perl6 -e 'say so "abc" ~~ /a <[]>/'
False

$ perl6 -e 'say so "" ~~ /<[]>/'
False

I added two tests to S05-mass/stdrules.t with commit Raku/roast@9bad4dd1af

I'm closing this ticket now.

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p6rt commented Jan 1, 2015

@usev6 - Status changed from 'open' to 'resolved'

@p6rt p6rt closed this as completed Jan 1, 2015
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