* Fix the tests.

tests/substituter2.sh

@@ -1,3 +1,18 @@
-#! /bin/sh -ex
-echo $*
-exit 1
+#! /bin/sh -e
+echo substituter2 args: $* >&2
+
+if test $1 = "--query-paths"; then
+    cat $TEST_ROOT/sub-paths
+elif test $1 = "--query-info"; then
+    shift
+    for i in in $@; do
+        echo $i
+        echo "" # deriver
+        echo 0 # nr of refs
+    done
+elif test $1 = "--substitute"; then
+    exit 1
+else
+    echo "unknown substituter operation"
+    exit 1
+fi