From @bbkr

bbkr_ r​: say 1.0000000000000000000000000000001
p6eval rakudo efac0f​: OUTPUT«1.000000000000000000000000000000100â�¤Â»

discussion followed

moritz bbkr_​: if the spec says trailing zeros aren't allowed, then it's a bug
bbkr_ moritz​: spec does not forbid trailing zeros. it's "common sense" type of issue
masak I don't really see what's wrong with trailing zeroes.
bbkr_ masak​: IMO number should be printed in simplest form possible. and it works that way up to 1.0000000000000000001 (no trailing zeros).
masak I'll go so far as agree that it's a bit weird that those zeroes are there.
bbkr_ this may cause problems when using in some fixed-width environment (tables, protocols using stringified value, etc)
FROGGS well, might use sprintf for that
[Coke] if you're using a fixed width, i'd argue you shoudl be using sprintf.

So this is not something that should be put in spec tests (because it is not forbidden by spec) but just a inconsistent behavior to investigate.

From @diakopter

13​:56 < diakopter> m​: say 1.0000000000000000000000000000001 # Rat fail?
13​:56 <+camelia> rakudo-moar 61d231​: OUTPUT«1.00000000000000003641037050347531â�¤Â»
13​:57 < psch> m​: say 1.0000000000000000000000000000001.WHAT
13​:57 <+camelia> rakudo-moar 61d231​: OUTPUT«(Rat)â�¤Â»
13​:57 < psch> m​: say 1.0000000000000000000000000000001.nude
13​:57 <+camelia> rakudo-moar 61d231​: OUTPUT«(10000000000000000000000000000001 9999999999999999635896294965248)â�¤Â»
13​:57 < diakopter> ooo
13​:57 < psch> m​: say Rat.nu.^type
13​:57 <+camelia> rakudo-moar 61d231​: OUTPUT«Method 'nu' not found for invocant of class 'Rat'â�¤ in block <unit> at
  /tmp/h_fcFeWJyh line 1â�¤â�¤Â»
13​:57 < psch> grml
13​:57 < psch> m​: say Rat.numerator.^type
13​:57 <+camelia> rakudo-moar 61d231​: OUTPUT«Cannot look up attributes in a type objectâ�¤ in method numerator at
  /home/camelia/rakudo-m-inst-1/share/perl6/runtime/CORE.setting.moarvm line 1â�¤ in block <unit> at
  /tmp/Gcg8Bcf6uC line 1â�¤â�¤Â»
13​:58 < psch> m​: say (1/3).numerator.^type
13​:58 <+camelia> rakudo-moar 61d231​: OUTPUT«Method 'type' not found for invocant of class
  'Perl6​::Metamodel​::ClassHOW'â�¤ in block <unit> at /tmp/WW_ex0WwjU line 1â�¤â�¤Â»
13​:58 < psch> oh whatever /o\
13​:58 < psch> m​: say (1/3).numerator.WHAT
13​:58 <+camelia> rakudo-moar 61d231​: OUTPUT«(Int)â�¤Â»
13​:58 -!- _nadim [~lab@​197.0.193.100] has joined #perl6
13​:58 < diakopter> the denominator is wrongish
13​:58 < psch> m​: my Int $x = 9999999999999999635896294965248; say ++$x
13​:58 <+camelia> rakudo-moar 61d231​: OUTPUT«9999999999999999635896294965249â�¤Â»
13​:58 < psch> we have a few tickets with numbers in that area being weird iirc
13​:59 < psch> probably mostly related to Rat
13​:59 < diakopter> updating #​116423