From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@cse.psu.edu
Subject: [9fans] runetype.c
Date: Thu, 1 Sep 2005 23:35:03 -0500 [thread overview]
Message-ID: <20050902043503.A768BB3C4D@dexter-peak.quanstro.net> (raw)
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?
next reply other threads:[~2005-09-02 4:35 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-02 4:35 erik quanstrom [this message]
2005-09-02 5:47 ` Rob Pike
2005-09-02 6:24 erik quanstrom
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