From: Oleg Bartunov <oleg@sai.msu.su>

Subject: [HACKERS] locale patches !

Hi there,

here are little patches to get Postgres 6.1 works with locale stuff.
This is a patch against 970402.tar.gz, there are no problem to apply them
by hand to 6.0 release. Collate stuff tested about 1-2 months in real
working database but I'm sure there must be no problem. US hackers
could vote against locale implementation ( locale for sure will affect to
speed of postgres ), so I introduce variable USE_LOCALE which
controls locale stuff. Non-US users now could use ~* operator
for searching and <order by> for strings with nation alphabet.
Please, don't forget, as I did first time, to set environment variable
LC_CTYPE and LC_COLLATE because backend get locale information from them.
I start postmaster from a little script, assuming that shell is Bash shell
it looks like:

#!/bin/sh

export LC_CTYPE=koi8-r
export LC_COLLATE=koi8-r
postmaster -B 1024 -S -D/usr/local/pgsql/data/ -o '-Fe'

src/backend/main/main.c

@@ -7,13 +7,16 @@
  *
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/backend/main/main.c,v 1.3 1996/11/14 20:49:09 scrappy Exp $
+ *    $Header: /cvsroot/pgsql/src/backend/main/main.c,v 1.4 1997/04/02 18:11:08 scrappy Exp $
  *
  *-------------------------------------------------------------------------
  */
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
+#ifdef USE_LOCALE  
+  #include <locale.h>
+#endif
 #include "postgres.h"
 #include "miscadmin.h"
 #include "bootstrap/bootstrap.h"	/* for BootstrapMain() */
@@ -31,6 +34,10 @@ int
 main(int argc, char *argv[])
 {
     int len;
+#ifdef USE_LOCALE
+    setlocale(LC_CTYPE,""); /* take locale information from an environment */
+    setlocale(LC_COLLATE,"");
+#endif
 #if defined(NOFIXADE) || defined(NOPRINTADE)
     /*
      * Must be first so that the bootstrap code calls it, too.