The Str.succ method on 1, ¹, ⒈ and ① works differently

kalkin commented 4 years ago

The Problem

say "1".succ;
say "¹".succ;
say "⒈".succ;
say "①".succ;

Expected Behavior

2 ² ⒉ ②

Actual Behavior

2 ¹ ⒈ ②

Environment

Compiler version (perl6 -v): 2019.11

There're were guesses in #raku based on unival, but we couldn't find any logic behind it. Is this a bug or a feauture?

lizmat commented 4 years ago

It's magic.

Really.

The character ranges that have magic .succ and .pred behaviour are hand selected. This has apparently not been done for these ranges.

I suggest you collect the ranges that you think are missing, and we can then add them relatively easy.

colomon commented 4 years ago

"1.".succ 2.

That's in my default perl6, which is...

This is Rakudo version 2018.12 built on MoarVM version 2018.12 implementing Perl 6.d.

Maybe regression here? (Honestly I wouldn't have expected it to work.)

On Mon, Dec 23, 2019 at 2:33 PM Elizabeth Mattijsen < notifications@github.com> wrote:

It's magic.

Really.

The character ranges that have magic .succ and .pred behaviour are hand selected. This has apparently not been done for these ranges.

I suggest you collect the ranges that you think are missing, and we can then add them relatively easy.

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kalkin commented 4 years ago

@colomon You are confusing 1. with ⒈ the latter one is DIGIT ONE FULL STOP

rakudo / rakudo