Enable extraction, update and compilation of a single gettext domain

compile-messages.sh

@@ -1,6 +1,11 @@
 #!/bin/sh
 . ./translation.vars
 
-for domain in $(ls $BABELCFG); do
-    TZ=UTC env/bin/pybabel compile -D $domain -d $TRANSDIR
-done
+if [ $# -ge 1 ]
+then
+    TZ=UTC env/bin/pybabel compile -D $1 -d $TRANSDIR
+else
+    for domain in $(ls $BABELCFG); do
+        TZ=UTC env/bin/pybabel compile -D $domain -d $TRANSDIR
+    done
+fi