[css-text][text-autospace] Is halfwidth Kana "non-ideographic letters"?

[kojiishi]

From the 8.5.2. Text Spacing Character Classes, halfwidth Kana belongs to "non-ideographic letters". This means that there will be an auto-space between ideographs and halfwidth Kana. This seems like an overlook.

The question is whether they should be "ideograph" or not. Terminology-wise, Kana is derived from Han, so it's closer to ideograph than to non-ideograph. Behavior-wise, I don't think authors expect auto-space between ideograph/fullwidth Kana and halfwidth Kana.

So I think we should classify them not to belong to either "ideographs" nor "non-ideographic letters". I'll check with JLTF about this separately.

[kojiishi]

Japanese discussion here

[kojiishi]

3 opinions in the Japanese discussion, all agreed:

• No auto-space between halfwidth Kana and "ideograph".
• No auto-space between halfwidth Kana and "non-ideographic letters/numerals".

[frivoal]

@kojiishi #9503 tries to address this (and a some other things), can you have a look?

[kojiishi]

/cc @Clqsin45 @nt1m

[nt1m]

cc @fantasai @vitorroriz for WebKit input.