From anteusz@freemail.hu

Hi all,

I found this

12​:55​:39] [jaffa4] m​: BEGIN {my $p =
'D​:\m\p6\guiultimate\lib\\GUI\Upp.pm6'; say $p.subst(/(.+)\\.+$/,{$0});}
[12​:55​:40] [+camelia] rakudo-moar 3fae8d​: OUTPUT«␤»
[12​:55​:47] [jaffa4] m​: {my $p = 'D​:\m\p6\guiultimate\lib\\GUI\Upp.pm6';
say $p.subst(/(.+)\\.+$/,{$0});}
[12​:55​:48] [+camelia] rakudo-moar 3fae8d​:
OUTPUT«D​:\m\p6\guiultimate\lib\GUI␤»
[12​:56​:03] [jaffa4] bug!!!!!!!!!!!!!!!

Jaffa4

From @smls

Comfirmed on current Rakudo. Now it additionally throws a weird exception...

Simpler demo example​:

  ➜ say "a".subst(/a/, "b");
  b

  ➜ BEGIN { say "a".subst(/a/, "b"); }
  ===SORRY!=== Error while compiling -e
  An exception occurred while evaluating a BEGIN
  at -e​:1
  Exception details​:
  Type check failed in binding cds; expected Any but got Mu (Mu)
  in block at -e line 1

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

From @smls

IRC comments​:

  psch​: m​: BEGIN { my $/ := Any; note "foo".subst("foo","bar") }
  camelia​: rakudo-moar 78d2ce​: OUTPUT«bar␤»
  psch​: it's really just that we set $/ too late
  psch​: might be rather easy to patch, or might not :)

From @zoffixznet

Fix​: rakudo/rakudo@a62b221
Test​: Raku/roast@9585230c26

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