Bug#272284: Selection of en + NL results in non-existent locale 'en_US@euro'

[Frans Pop <aragorn@tiscali.nl>]

Package: countrychooser
Version: 1.03
Severity: important

Selection of English as language and Netherlands as country results in 
FALLBACKLOCALE being used. However, the fallback locale does not include a 
test to see if it exists.

I think the easiest solution would be to add a test for the existence of the 
fallbacklocale and, if it does not, remove any postfix (I guess we may 
assume that any fallback locale without a postfix will exist anyway).

Whilst I was testing this, I also noticed that the FALLBACKLOCALE appears 
not to be set inside countrychooser's postinst script, but to somehow 
inherit it's value from languagechooser.
There is a line 'fallbacklocalecode="debian-installer/fallbacklocale"', but 
a db_get is never performed.

The attached patch should fix both problems. Tested, but please check.

--- postinst	2004-09-19 01:46:41.000000000 +0200
+++ new/postinst	2004-09-19 01:55:01.000000000 +0200
@@ -148,10 +148,21 @@
 	# Just in case
 	DEFAULTLOCALE="C"
 fi
+
+# Finally grab the fallback locale we got from languagechooser
+db_get "$fallbacklocalecode"
+if [ -n "$RET" ]; then
+	FALLBACKLOCALE="$RET"
+else
+	# Just in case
+	FALLBACKLOCALE="C"
+fi
+
 # If present, keep track of charset or modifier we got from languagechooser
 # This charset or modifier is in the fallback locale
 EXTRA_LANGUAGECHOOSER=`echo $FALLBACKLOCALE | sed -e 's/^[^.@]*//'`
 
+
 FIRST_LANG=$(echo $LANGUAGELIST | sed -e 's/:.*$//')
 
 if grep -q "^$FIRST_LANG" $SHORTLISTS; then
@@ -241,6 +252,7 @@
 log "COUNTRYCODE = '$COUNTRYCODE'"
 log "COUNTRYCODE_LANGUAGECHOOSER = '$COUNTRYCODE_LANGUAGECHOOSER'"
 log "LOCALE_LANGUAGECHOOSER = '$LOCALE_LANGUAGECHOOSER'"
+log "FALLBACKLOCALE = '$FALLBACKLOCALE'"
 
 for entry in ${LANGUAGE}_${COUNTRYCODE}${EXTRA_LANGUAGECHOOSER} \
 	     ${LANGUAGE}_${COUNTRYCODE}; do
@@ -277,8 +289,12 @@
 
 # Fall back to a supported locale.
 if [ -z "${LOCALE}" ]; then
-	LOCALE="${FALLBACKLOCALE}"
-	log "falling back to locale '${FALLBACKLOCALE}'"
+        if grep -q "^${FALLBACKLOCALE}$" $SUPPORTEDLOCALES; then
+                LOCALE="${FALLBACKLOCALE}"
+        else
+                LOCALE=`echo $FALLBACKLOCALE | sed -e 's/[.@].*$//'`
+        fi
+        log "falling back to locale '${LOCALE}'"
 fi
 
 # Set the locale.