[GB18030] Wrong codepoint at index 7533

[ldelabre]

Hi,
When using https://encoding.spec.whatwg.org/index-gb18030.txt, pointer 7533 should decode as U+1E3F which is wrong according to https://www.w3.org/International/tests/repo/encoding/legacy-mb-schinese/gb18030/gb18030_chars.html.
The byte sequence 0xA8 0xBC decodes as U+E7C7, not U+1E3F.

Regards,
Ludovic.

[hsivonen]

The index gb18030 ranges pointer operation special-cases U+E7C7 for the encoder side, so on surface, this looks like an error in generating the test case.

@r12a, is this a test error or an intentional disagreement with the spec?

[annevk]

The source for this reads

<span data-cp="E7C7" data-bytes="A8 BC">ḿ</span>

and ḿ is U+1E3F so I think there's an error of sorts here in the test.

[vyv03354]

Maybe the test does not reflect #26?

[annevk]

Let's duplicate this into #57. Those tests were not maintained and haven't been successfully upstreamed into web-platform-tests. Anyone is welcome to do that work, but they will have to make them match the specification first.