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Implement a solution to the 'Turkish locale downcases I incorrectly'

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problem, per previous discussion.  Make some additional changes to
centralize the knowledge of just how identifier downcasing is done,
in hopes of simplifying any future tweaking in this area.
This commit is contained in:
Tom Lane
2004-02-21 00:34:53 +00:00
parent 1d567aee07
commit 59f9a0b9df
10 changed files with 158 additions and 125 deletions
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10
src/backend/parser/keywords.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/keywords.c,v 1.144 2003/11/29 19:51:51 pgsql Exp $
* $PostgreSQL: pgsql/src/backend/parser/keywords.c,v 1.145 2004/02/21 00:34:52 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -369,17 +369,13 @@ ScanKeywordLookup(const char *text)
/*
* Apply an ASCII-only downcasing. We must not use tolower() since it
* may produce the wrong translation in some locales (eg, Turkish),
* and we don't trust isupper() very much either. In an ASCII-based
* encoding the tests against A and Z are sufficient, but we also
* check isupper() so that we will work correctly under EBCDIC. The
* actual case conversion step should work for either ASCII or EBCDIC.
* may produce the wrong translation in some locales (eg, Turkish).
*/
for (i = 0; i < len; i++)
{
char ch = text[i];
if (ch >= 'A' && ch <= 'Z' && isupper((unsigned char) ch))
if (ch >= 'A' && ch <= 'Z')
ch += 'a' - 'A';
word[i] = ch;
}