From @masak

<loren> m​: my &f := &substr.assuming('hello world'); say f(0, 2);
<camelia> rakudo-moar 70a94d​: OUTPUT«hello world␤»
<moritz> m​: say &substr.assuming('hello world')(0, 2)
<camelia> rakudo-moar 70a94d​: OUTPUT«hello world␤»
<moritz> wtf (the "w" stands for "weird", here)
* moritz would have thought we had tests for assuming
<moritz> m​: sub my-substr(*@​a) { substr |@​a }; say
&my-substr.assuming('hello, world')(1, 3)
<camelia> rakudo-moar 70a94d​: OUTPUT«ello, world␤»
<moritz> so it only passes one more argument on to the original function?
<FROGGS> maybe assuming does not work well with multies?
<moritz> m​: sub d(*@​x) { say @​x.perl }; &d.assuming('a', 'b')('c', 'd', 'e')
<camelia> rakudo-moar 70a94d​: OUTPUT«["a", "b", "c"]␤»
<moritz> FROGGS​: no
<moritz> FROGGS​: it ignores anything from the second argument onwards
<FROGGS> m​: multi f(1) {'a'}; multi f(1, 2) {'b'}; multi f(1, 2, 3)
{'c'}; say &f.assuming(1)(2, 3)
<camelia> rakudo-moar 70a94d​: OUTPUT«b␤»
<FROGGS> m​: multi f(1) {'a'}; multi f(1, 2) {'b'}; multi f(1, 2, 3)
{'c'}; say &f.assuming(1)(2, 3, 4)
<camelia> rakudo-moar 70a94d​: OUTPUT«b␤»
<FROGGS> wow
<moritz> who wants to write the bug report?
* masak submits rakudobug

From @smls

On Mon, 12 Oct 2015 05​:33​:13 -0700, masak wrote​:

<loren> m​: my &f := &substr.assuming('hello world'); say f(0, 2);
<camelia> rakudo-moar 70a94d​: OUTPUT«hello world␤»
<moritz> m​: say &substr.assuming('hello world')(0, 2)
<camelia> rakudo-moar 70a94d​: OUTPUT«hello world␤»
[...]

It works fine now​:

  ➜ say &substr.assuming("hello world")(0, 2);
  he

  ➜ say { @​_ }.assuming(1, 2)(3, 4, 5);
  [1 2 3 4 5]

According to committable¹ and bisectable², this was a regression introduced near the start of the GLR around Sept 2015, and fixed again by a GLR-related commit³ in Dec 2015.

Can be closed with tests.

[1] https://gist.github.com/Whateverable/47d41dd4ca8092815ba0449f8a8ee518
[2] https://gist.github.com/Whateverable/8212d24ae0b3498ca53cdd46471db402
[3] rakudo/rakudo@88a8a00

The RT System itself - Status changed from 'new' to 'open'

From @skids

On Tue, 12 Sep 2017 08​:55​:37 -0700, smls75@​gmail.com wrote​:

On Mon, 12 Oct 2015 05​:33​:13 -0700, masak wrote​:

<loren> m​: my &f := &substr.assuming('hello world'); say f(0, 2);
<camelia> rakudo-moar 70a94d​: OUTPUT«hello world␤»
<moritz> m​: say &substr.assuming('hello world')(0, 2)
<camelia> rakudo-moar 70a94d​: OUTPUT«hello world␤»
[...]

It works fine now​:

➜ say &substr.assuming("hello world")(0, 2);
he

➜ say { @​_ }.assuming(1, 2)(3, 4, 5);
[1 2 3 4 5]

According to committable¹ and bisectable², this was a regression
introduced near the start of the GLR around Sept 2015, and fixed again
by a GLR-related commit³ in Dec 2015.

Can be closed with tests.
---
[1]
https://gist.github.com/Whateverable/47d41dd4ca8092815ba0449f8a8ee518
[2]
https://gist.github.com/Whateverable/8212d24ae0b3498ca53cdd46471db402
[3] rakudo/rakudo@88a8a00

Tests added in roast b2142be76, so resolving.

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