Fix #6357 - Don't remove useful signature files

duplicity >=0.6.20 now correctly removes useless signature files and
therefore the cache directory doesn't grow infinitely any more. Using
--extra-clean removes all signatures except from the last chain and so
renders older chains unusable, don't use it by default any more.
See: https://bugs.launchpad.net/duplicity/+bug/519948

diff --git a/handlers/dup.in b/handlers/dup.in
index a67848f6ab0576d8ad5191a3874ad25d0f2f8c32..1ce7710ccdf0b7e4c85ed2d1e47f7cdb731dd834 100644 (file)
--- a/handlers/dup.in
+++ b/handlers/dup.in
@@ -191,7 +191,9 @@ else
 fi
 
 ### Cleanup options
-execstr_options="${execstr_options} --extra-clean"
+if [ "$duplicity_major" -le 0 -a "$duplicity_minor" -le 6 -a "$duplicity_sub" -le 19 ]; then
+   execstr_options="${execstr_options} --extra-clean"
+fi
 
 ### Temporary directory
 if [ -n "$tmpdir" ]; then