* [9fans] runetype.c
@ 2005-09-02 6:24 erik quanstrom
0 siblings, 0 replies; 3+ messages in thread
From: erik quanstrom @ 2005-09-02 6:24 UTC (permalink / raw)
To: 9fans
true, but since isalpharune() returns 1 when isupperrune() returns 1,
isalpharune(Ⓐ) returns 1, although the unicode guys say it's a symbol.
also, 3371 (<square> h P a) is listed in _alpha2[] though the unicode
guys say it's a symbol. it also has not upper/lower case.
sorry for being dense, i'm just trying to figure out what the rules are
and why they are the way they are.
erik
-----
> in UnicodeData-3.0.0.txt, these are as predicted, e.g. 24d0 is a lowercase form.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [9fans] runetype.c
2005-09-02 4:35 erik quanstrom
@ 2005-09-02 5:47 ` Rob Pike
0 siblings, 0 replies; 3+ messages in thread
From: Rob Pike @ 2005-09-02 5:47 UTC (permalink / raw)
To: erik quanstrom, Fans of the OS Plan 9 from Bell Labs
in UnicodeData-3.0.0.txt, these are as predicted, e.g. 24d0 is a lowercase form.
-rob
On 9/2/05, erik quanstrom <quanstro@quanstro.net> wrote:
> unicode sure gets wierd if you start looking too closely.
>
> i'm curious about a few lines in __alpharune2[] and __toupper2[] for example
>
> 0x3260, 0x327b, /* ㉠ - ㉻ */
>
> and (from __toupper2[])
>
> 0x24d0, 0x24e9, 474, /* ⓐ-ⓩ Ⓐ-Ⓩ */
>
> and
>
> 0x3371, 0x3376, /* ㍱ - ㍶ */
>
> however, from UnicodeData.txt (version 4.1), all of these are classified as symbols.
>
> so, as far as i can tell, we either:
>
> (a) declare anything with an upper/lower case a letter, never mind the unicode classification.
> this makes 1 isalpharune(ⓐ) while 0 isalpharune(㉻), however.
>
> (b) go with the flow. anything that unicode says is a symbol is not a letter, even if some
> symbols have an uppercase.
>
> (c) (this appears to be what the current table is doing) anything that either is a letter
> or is composed as "<operator> L+" where L+ are 1..N letter symbols is considered to be a letter.
>
>
> any thoughts?
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* [9fans] runetype.c
@ 2005-09-02 4:35 erik quanstrom
2005-09-02 5:47 ` Rob Pike
0 siblings, 1 reply; 3+ messages in thread
From: erik quanstrom @ 2005-09-02 4:35 UTC (permalink / raw)
To: 9fans
unicode sure gets wierd if you start looking too closely.
i'm curious about a few lines in __alpharune2[] and __toupper2[] for example
0x3260, 0x327b, /* ㉠ - ㉻ */
and (from __toupper2[])
0x24d0, 0x24e9, 474, /* ⓐ-ⓩ Ⓐ-Ⓩ */
and
0x3371, 0x3376, /* ㍱ - ㍶ */
however, from UnicodeData.txt (version 4.1), all of these are classified as symbols.
so, as far as i can tell, we either:
(a) declare anything with an upper/lower case a letter, never mind the unicode classification.
this makes 1 == isalpharune(ⓐ) while 0 == isalpharune(㉻), however.
(b) go with the flow. anything that unicode says is a symbol is not a letter, even if some
symbols have an uppercase.
(c) (this appears to be what the current table is doing) anything that either is a letter
or is composed as "<operator> L+" where L+ are 1..N letter symbols is considered to be a letter.
any thoughts?
^ permalink raw reply [flat|nested] 3+ messages in thread
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