Yung-Fong Tang wrote:
> I just do a quick scan of the document
> http://www.w3.org/MarkUp/DOM/Group/drafts/level-one-core.html and have
> some question:
Unfortunately, this document is not accessible to non-W3C members,
and individuals cannot become members.
> boolean isBase()
This means that the character does *not* have general category Mn
or Mc or Me.
> boolean isCombining()
This means that the character has general category Mn, Mc, or Me.
> boolean isComposite()
This means that the character has a decomposition.
> boolean isCompatibility()
I'm not sure how to interpret this.
> boolean isNonSpacing()
> boolean isSmall()
> boolean isNormal()
I don't know.
> boolean isCapital()
> boolean isFullwidth()
> boolean isHalfwidth()
These are defined as follows on p. 6-130:
isFullWidth is true of U+3000-9FFF, U+F900-FAFF, U+FE30-FE6F,
isHalfWidth is true of U+0020-007E, U+0A00-1FFF, U+FB00-FE2F,
U+FE70-FEFE, U+FF61-FFDC, U+FFE8-FFEE, U+FFF0-FFFD.
The status of U+1100-11FF and U+AC00-D7A3 is doubtful. Officially,
the first block (Hangul Jamo) is halfwidth and the second block
(Hangul Syllables) is neither, but they both look fullwidth to me.
> boolean isAlphabetic()
> Returns true if the character is an alphabetic character within some character set; false otherwise.
> We should include specification or reference about the above is
> function. Does ANYONE understand what the above function mean ?
Sure. Page 4-14 says that alphabetic characters are letter
characters which are not ideographic. General category Ll, Lu, Lm,
Lo, Lt *except* in the ranges U+4E00-9FFF and U+F900-FAFF.
> isFullwisth, isHalfwidth and isAlphabetic seems carried from the old C
> interface which is not quite fit into the Unicode centric world (and
> Propotional font world ...) But what the rest of the function mean ?
There is nothing inconsistent about fixed-font Unicode: see
the Everson Mono fonts.
Feel free to forward this to other mailing lists or individuals.
-- John Cowan http://www.ccil.org/~cowan firstname.lastname@example.org e'osai ko sarji la lojban
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