On 5 Apr 2017, at 17:28, William_J_G Overington <wjgo_10009_at_btinternet.com> wrote:
> Well, whether there is a need to use a ZWJ or no need to use a ZWJ is not here the issue.
There isn’t. We should use VS just as we do with maths and Myanmar characters.
> I then asked, the question worded differently from how it is worded here, about whether UTC needs to be involved where a character sequence that contains one or more ZWJ characters generates a glyph with a meaning different from the meaning of the original sequence that did not have the one or more ZWJ characters included.
The proposal has been made for Standardized Variation Sequences.
> For example, p ZWJ p produces a pp ligature with no change of meaning.
A ZWJ is not necessary to produce a pp ligature.
> For example, where WOMAN ZWJ ROCKET produces a glyph for a LADY ASTRONAUT, thus a change of meaning and I think that it went to UTC as there was a change of meaning but I am not congruently sure of that..
That is a matter of emoji which is not “normal” symbol usage and is not really analogous to what we are discussing here.
> SQUARE ZWJ CHESSPIECE or CHESSPIECE ZWJ SQUARE produces a CHESSPIECE ON A SQUARE, thus a change of meaning.
No, it’s not. CHESSPIECE is still CHESSPIECE. The glyph for CHESSPIECE needs to be altered in order to make it suitable to use the characters in a way which will permit the presentation and interchange of chessboard matrices.
Michael Everson
Received on Wed Apr 05 2017 - 12:30:05 CDT
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