cherrypick from my apt/experimental branch

* apt-pkg/deb/debmetaindex.cc:
  - none is a separator, not a language: no need for Index (Closes: #624218)
* apt-pkg/aptconfiguration.cc:
  - do not builtin languages only if none is forced (Closes: #643787)

4 files changed, 113 insertions, 4 deletions

diff --git a/test/integration/test-bug-624218-Translation-file-handling b/test/integration/test-bug-624218-Translation-file-handling
new file mode 100755
index 000000000..a1e708d2e
--- /dev/null
+++ b/test/integration/test-bug-624218-Translation-file-handling
@@ -0,0 +1,87 @@
+#!/bin/sh
+set -e
+
+TESTDIR=$(readlink -f $(dirname $0))
+. $TESTDIR/framework
+setupenvironment
+configarchitecture 'i386'
+
+buildsimplenativepackage 'coolstuff' 'all' '1.0' 'unstable'
+
+setupaptarchive
+
+changetowebserver
+
+rm -rf rootdir/var/lib/apt/lists
+
+msgtest 'No download of non-existent locals' 'with Index'
+LC_ALL="" aptget update -o Acquire::Languages=en | grep -q -e 'Translation-[^e][^n] ' && msgfail || msgpass
+rm -rf rootdir/var/lib/apt/lists
+
+msgtest 'Download of existent locals' 'with Index'
+LC_ALL="" aptget update | grep -q -e 'Translation-en ' && msgpass || msgfail
+rm -rf rootdir/var/lib/apt/lists
+
+msgtest 'Download of en in LC_ALL=C' 'with Index'
+LC_ALL=C aptget update | grep -q -e 'Translation-en ' && msgpass || msgfail
+rm -rf rootdir/var/lib/apt/lists
+
+msgtest 'Download of en as forced language' 'with Index'
+aptget update -o Acquire::Languages=en | grep -q -e 'Translation-en ' && msgpass || msgfail
+rm -rf rootdir/var/lib/apt/lists
+
+msgtest 'Download of nothing else in forced language' 'with Index'
+aptget update -o Acquire::Languages=en | grep -q -e 'Translation-[^e][^n] ' && msgfail || msgpass
+rm -rf rootdir/var/lib/apt/lists
+
+msgtest 'Download no Translation- if forced language is non-existent' 'with Index'
+aptget update -o Acquire::Languages=ast_DE | grep -q -e 'Translation-' && msgfail || msgpass
+rm -rf rootdir/var/lib/apt/lists
+
+msgtest 'Download of nothing if none is forced' 'with Index'
+aptget update -o Acquire::Languages=none | grep -q -e 'Translation' && msgfail || msgpass
+rm -rf rootdir/var/lib/apt/lists
+
+sed -i '/i18n\/Index$/ d' $(find aptarchive -name 'Release')
+signreleasefiles
+
+# we have to try as not every archive includes the i18n Index in the Release file - if it has one at all
+msgtest 'Download no Translation- if forced language is non-existent' 'with not-announced Index'
+aptget update -o Acquire::Languages=ast_DE | grep -q -e 'Translation-' && msgfail || msgpass
+rm -rf rootdir/var/lib/apt/lists
+
+find aptarchive -name 'Index' -delete
+
+msgtest 'Download of en as forced language' 'without Index'
+aptget update -o Acquire::Languages=en | grep -q -e 'Translation-en ' && msgpass || msgfail
+rm -rf rootdir/var/lib/apt/lists
+
+msgtest 'Download of nothing else in forced language' 'without Index'
+aptget update -o Acquire::Languages=en | grep -q -e 'Translation-[^e][^n] ' && msgfail || msgpass
+rm -rf rootdir/var/lib/apt/lists
+
+msgtest 'Download of ast_DE as forced language' 'without Index'
+aptget update -o Acquire::Languages=ast_DE | grep -q -e 'Translation-ast_DE$' && msgpass || msgfail
+rm -rf rootdir/var/lib/apt/lists
+
+msgtest 'Download of nothing else in forced language' 'without Index'
+aptget update -o Acquire::Languages=ast_DE | grep -q -e 'Translation-[^a][^s]' && msgfail || msgpass
+rm -rf rootdir/var/lib/apt/lists
+
+msgtest 'Download of nothing if none is forced' 'without Index'
+aptget update -o Acquire::Languages=none | grep -q -e 'Translation' && msgfail || msgpass
+rm -rf rootdir/var/lib/apt/lists
+
+mkdir -p rootdir/var/lib/apt/lists
+touch rootdir/var/lib/apt/lists/localhost:8080_dists_unstable_main_i18n_Translation-ast_DE
+
+msgtest 'Download of builtin files' 'without Index'
+aptget update | grep -q -e 'Translation-ast_DE' && msgpass || msgfail
+rm -rf rootdir/var/lib/apt/lists
+
+mkdir -p rootdir/var/lib/apt/lists
+touch rootdir/var/lib/apt/lists/localhost:8080_dists_unstable_main_i18n_Translation-ast_DE
+
+msgtest 'Download of nothing (even builtin) if none is forced' 'without Index'
+aptget update -o Acquire::Languages=none | grep -q -e 'Translation' && msgfail || msgpass
+rm -rf rootdir/var/lib/apt/lists
diff --git a/test/libapt/assert.h b/test/libapt/assert.h
index fae9b6c64..ce5accc1c 100644
--- a/test/libapt/assert.h
+++ b/test/libapt/assert.h
@@ -54,6 +54,21 @@ void assertEqualsOr2(int const &expect1, int const &expect2, unsigned int const
 }
 
 
+#define equalsOr3(w,x,y,z) assertEqualsOr3(x, y, z, w, __LINE__)
+
+template < typename X, typename Y >
+void OutputAssertEqualOr3(X expect1, X expect2, X expect3, char const* compare, Y get, unsigned long const &line) {
+	std::cerr << "Test FAILED: »" << expect1 << "« or »" << expect2 << "« or »" << expect3 << "« " << compare << " »" << get << "« at line " << line << std::endl;
+}
+
+template < typename X, typename Y >
+void assertEqualsOr3(X expect1, X expect2, X expect3, Y get, unsigned long const &line) {
+	if (expect1 == get || expect2 == get || expect3 == get)
+		return;
+	OutputAssertEqualOr3(expect1, expect2, expect3, "==", get, line);
+}
+
+
 // simple helper to quickly output a vectors
 template < typename X >
 void dumpVector(X vec) {
diff --git a/test/libapt/getlanguages_test.cc b/test/libapt/getlanguages_test.cc
index f6aa7a697..a1c801ea2 100644
--- a/test/libapt/getlanguages_test.cc
+++ b/test/libapt/getlanguages_test.cc
@@ -126,13 +126,19 @@ int main(int argc,char *argv[])
 
 	_config->Set("Dir::State::lists", argv[1]);
 	vec = APT::Configuration::getLanguages(true, false, env);
-	equals(vec.size(), 6);
+	equals(vec.size(), 7);
 	equals(vec[0], "de_DE");
 	equals(vec[1], "de");
 	equals(vec[2], "en");
 	equals(vec[3], "none");
-	equalsOr2(vec[4], "pt", "tr");
-	equalsOr2(vec[5], "tr", "pt");
+	equalsOr3(vec[4], "pt", "tr", "ast_DE");
+	equalsOr3(vec[5], "tr", "pt", "ast_DE");
+	equalsOr3(vec[6], "tr", "pt", "ast_DE");
+
+	_config->Set("Acquire::Languages", "none");
+	vec = APT::Configuration::getLanguages(true, false, env);
+	equals(vec.size(), 0);
+	_config->Set("Acquire::Languages", "");
 
 	_config->Set("Dir::State::lists", "/non-existing-dir");
 	_config->Set("Acquire::Languages::1", "none");
diff --git a/test/libapt/run-tests b/test/libapt/run-tests
index 275a789b2..9dad36f5b 100755
--- a/test/libapt/run-tests
+++ b/test/libapt/run-tests
@@ -64,7 +64,8 @@ do
 		touch "${tmppath}/ftp.de.debian.org_debian_dists_sid_main_i18n_Translation-tr" \
 			"${tmppath}/ftp.de.debian.org_debian_dists_sid_main_i18n_Translation-pt" \
 			"${tmppath}/ftp.de.debian.org_debian_dists_sid_main_i18n_Translation-se~" \
-			"${tmppath}/ftp.de.debian.org_debian_dists_sid_main_i18n_Translation-st.bak"
+			"${tmppath}/ftp.de.debian.org_debian_dists_sid_main_i18n_Translation-st.bak" \
+			"${tmppath}/ftp.de.debian.org_debian_dists_sid_main_i18n_Translation-ast_DE"
 	elif [ $name = "CompareVersion${EXT}" ]; then
 		tmppath="${DIR}/versions.lst"
 	fi