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-rw-r--r--IkiWiki/Plugin/aggregate.pm3
1 files changed, 2 insertions, 1 deletions
diff --git a/IkiWiki/Plugin/aggregate.pm b/IkiWiki/Plugin/aggregate.pm
index 9b531b612..97dd036f6 100644
--- a/IkiWiki/Plugin/aggregate.pm
+++ b/IkiWiki/Plugin/aggregate.pm
@@ -343,7 +343,8 @@ sub savestate () {
push @line, "tag=$_" foreach @{$data->{tags}};
}
else {
- push @line, "$field=".$data->{$field};
+ push @line, "$field=".$data->{$field}
+ if defined $data->{$field};
}
}
print OUT join(" ", @line)."\n" || error("write $newfile: $!", $cleanup);