po: use msgmerge --previous

Reported-by: Mario Blättermann <mario.blaettermann@gmail.com>
Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/po/Makevars b/po/Makevars
index 4d5629cba271bba76b2db3f5cfef3805d52d2b84..6ac83812c39d67cab47f29584adf288572d08d1a 100644 (file)
--- a/po/Makevars
+++ b/po/Makevars
@@ -11,7 +11,7 @@ top_builddir = ..
 XGETTEXT_OPTIONS = --keyword=_ --keyword=N_ --keyword=P_:1,2
 
 # This option gets passed to msgmerge.
-MSGMERGE_OPTIONS = --no-wrap
+MSGMERGE_OPTIONS = --no-wrap --previous
 
 # This is the copyright holder that gets inserted into the header of the
 # $(DOMAIN).pot file.  Set this to the copyright holder of the surrounding