+git cat-file tag $tagname >../raw-base
+
+next-mangle sigfail
+perl -pe <../raw-base >../tagobj-$ident 's/ split / split ignoreme /'
+raw-mangled
+grep 'gpgv: BAD signature' ../sendmail.log
+
+next-mangle nosig
+perl -ne <../raw-base >../tagobj-$ident 'print unless m/^-----/..0'
+raw-mangled
+grep 'missing signature' ../sendmail.log
+
+git cat-file tag test-dummy/1.0-1 >../raw-base
+