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A script that gives different results when executed from a file and when pasted into REPL #3599

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p6rt opened this issue Dec 6, 2014 · 5 comments
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@p6rt
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@p6rt p6rt commented Dec 6, 2014

Migrated from rt.perl.org#123380 (status was 'open')

Searchable as RT123380$

@p6rt
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@p6rt p6rt commented Dec 6, 2014

From djura@centrum.cz

$ ./perl6-m --version
This is perl6 version 2014.09 built on MoarVM version 2014.09

#############################xx

$ ./perl6-m

say 'a'.subst(/(.)/,{$0~$0});
aa
say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/;
ï½¢%20ï½£
0 => ï½¢20ï½£

say 'a'.subst(/(.)/,{$0~$0});
2020

#############################xx

$ cat strangeregexp.pl
say 'a'.subst(/(.)/,{$0~$0}); # aa

say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/; # ï½¢%20ï½£
  # 0 => ï½¢20ï½£

say 'a'.subst(/(.)/,{$0~$0});

#############################xx

./perl6-m strangeregexp.pl
aa
ï½¢%20ï½£
0 => ï½¢20ï½£

aa

#############################xx

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@p6rt
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@p6rt p6rt commented Feb 7, 2015

From @usev6

This is another case where it makes a difference whether the command comes on a single line or on two separate lines​:

$ perl6-m -e 'say "a".subst(/(.)/,{$0~$0}); say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/; say "a".subst(/(.)/,{$0~$0});'
aa
ï½¢%20ï½£
0 => ï½¢20ï½£
aa

But with a newline in the echo command​:

$ echo 'say "a".subst(/(.)/,{$0~$0}); say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/;
say "a".subst(/(.)/,{$0~$0});' | perl6-m
aa
ï½¢%20ï½£
0 => ï½¢20ï½£
2020

The behaviour differs with rakudo.parrot and rakudo.jvm​:

$ echo 'say "a".subst(/(.)/,{$0~$0}); say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/;
say "a".subst(/(.)/,{$0~$0});' | perl6-p

say "a".subst(/(.)/,{$0~$0}); say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/;
aa
ï½¢%20ï½£
0 => ï½¢20ï½£
say "a".subst(/(.)/,{$0~$0});
aa

$ echo 'say "a".subst(/(.)/,{$0~$0}); say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/;
say "a".subst(/(.)/,{$0~$0});' | perl6-j

say "a".subst(/(.)/,{$0~$0}); say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/;
aa
ï½¢%20ï½£
0 => ï½¢20ï½£
True
say "a".subst(/(.)/,{$0~$0});
a
True

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@p6rt
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@p6rt p6rt commented Feb 7, 2015

From @usev6

This is another case where it makes a difference whether the command comes on a single line or on two separate lines​:

$ perl6-m -e 'say "a".subst(/(.)/,{$0~$0}); say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/; say "a".subst(/(.)/,{$0~$0});'
aa
ï½¢%20ï½£
0 => ï½¢20ï½£
aa

But with a newline in the echo command​:

$ echo 'say "a".subst(/(.)/,{$0~$0}); say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/;
say "a".subst(/(.)/,{$0~$0});' | perl6-m
aa
ï½¢%20ï½£
0 => ï½¢20ï½£
2020

The behaviour differs with rakudo.parrot and rakudo.jvm​:

$ echo 'say "a".subst(/(.)/,{$0~$0}); say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/;
say "a".subst(/(.)/,{$0~$0});' | perl6-p

say "a".subst(/(.)/,{$0~$0}); say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/;
aa
ï½¢%20ï½£
0 => ï½¢20ï½£
say "a".subst(/(.)/,{$0~$0});
aa

$ echo 'say "a".subst(/(.)/,{$0~$0}); say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/;
say "a".subst(/(.)/,{$0~$0});' | perl6-j

say "a".subst(/(.)/,{$0~$0}); say "%20" ~~ /​:i \%(<[0..9A..F]>**2)/;
aa
ï½¢%20ï½£
0 => ï½¢20ï½£
True
say "a".subst(/(.)/,{$0~$0});
a
True

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@p6rt
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@p6rt p6rt commented Feb 7, 2015

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

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@p6rt
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@p6rt p6rt commented May 8, 2018

From @skids

Test PR for rakudo tree​: rakudo/rakudo#1806

If that is accepted, someone with a jvm build should check whether it needs to be fudged for rakudo-j
and if it is fine there as well, this ticket can be closed.

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@p6rt p6rt added the Bug label Jan 5, 2020
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