Make initdb's selection of default text search configuration depend

only on the 'language' part of the locale name, ignoring the country code.
We may need to be smarter later when there are more built-in configurations,
but for now this is good enough and avoids having to bloat the table.

src/bin/initdb/initdb.c

@@ -42,7 +42,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  * Portions taken from FreeBSD.
  *
- * $PostgreSQL: pgsql/src/bin/initdb/initdb.c,v 1.148 2007/10/24 20:11:00 alvherre Exp $
+ * $PostgreSQL: pgsql/src/bin/initdb/initdb.c,v 1.149 2007/10/25 20:22:53 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -719,7 +719,7 @@ get_encoding_id(char *encoding_name)
 
 /*
  * Support for determining the best default text search configuration.
- * We key this off LC_CTYPE, after stripping its encoding indicator if any.
+ * We key this off the first part of LC_CTYPE (ie, the language name).
  */
 struct tsearch_config_match
 {
@@ -729,39 +729,37 @@ struct tsearch_config_match
 
 static const struct tsearch_config_match tsearch_config_languages[] =
 {
-	{"danish", "da_DK"},
-	{"danish", "Danish_Denmark"},
-	{"dutch", "nl_NL"},
-	{"dutch", "Dutch_Netherlands"},
+	{"danish", "da"},
+	{"danish", "Danish"},
+	{"dutch", "nl"},
+	{"dutch", "Dutch"},
 	{"english", "C"},
 	{"english", "POSIX"},
-	{"english", "en_US"},
-	{"english", "English_America"},
-	{"english", "en_UK"},
-	{"english", "English_Britain"},
-	{"finnish", "fi_FI"},
-	{"finnish", "Finnish_Finland"},
-	{"french", "fr_FR"},
-	{"french", "French_France"},
-	{"german", "de_DE"},
-	{"german", "German_Germany"},
-	{"hungarian", "hu_HU"},
-	{"hungarian", "Hungarian_Hungary"},
-	{"italian", "it_IT"},
-	{"italian", "Italian_Italy"},
-	{"norwegian", "no_NO"},
-	{"norwegian", "Norwegian_Norway"},
-	{"portuguese", "pt_PT"},
-	{"portuguese", "Portuguese_Portugal"},
-	{"romanian", "ro_RO"},
-	{"russian", "ru_RU"},
-	{"russian", "Russian_Russia"},
-	{"spanish", "es_ES"},
-	{"spanish", "Spanish_Spain"},
-	{"swedish", "sv_SE"},
-	{"swedish", "Swedish_Sweden"},
-	{"turkish", "tr_TR"},
-	{"turkish", "Turkish_Turkey"},
+	{"english", "en"},
+	{"english", "English"},
+	{"finnish", "fi"},
+	{"finnish", "Finnish"},
+	{"french", "fr"},
+	{"french", "French"},
+	{"german", "de"},
+	{"german", "German"},
+	{"hungarian", "hu"},
+	{"hungarian", "Hungarian"},
+	{"italian", "it"},
+	{"italian", "Italian"},
+	{"norwegian", "no"},
+	{"norwegian", "Norwegian"},
+	{"portuguese", "pt"},
+	{"portuguese", "Portuguese"},
+	{"romanian", "ro"},
+	{"russian", "ru"},
+	{"russian", "Russian"},
+	{"spanish", "es"},
+	{"spanish", "Spanish"},
+	{"swedish", "sv"},
+	{"swedish", "Swedish"},
+	{"turkish", "tr"},
+	{"turkish", "Turkish"},
 	{NULL, NULL}				/* end marker */
 };
 
@@ -777,15 +775,15 @@ find_matching_ts_config(const char *lc_type)
 			   *ptr;
 
 	/*
-	 * Convert lc_ctype to a language name by stripping ".utf8", "@euro", or
-	 * what-have-you
+	 * Convert lc_ctype to a language name by stripping everything after
+	 * an underscore.  Just for paranoia, we also stop at '.' or '@'.
 	 */
 	if (lc_type == NULL)
 		langname = xstrdup("");
 	else
 	{
 		ptr = langname = xstrdup(lc_type);
-		while (*ptr && *ptr != '.' && *ptr != '@')
+		while (*ptr && *ptr != '_' && *ptr != '.' && *ptr != '@')
 			ptr++;
 		*ptr = '\0';
 	}