=== modified file 'common.zsh'
--- common.zsh	2017-12-12 10:33:38 +0000
+++ common.zsh	2017-12-12 10:31:37 +0000
@@ -32,7 +32,7 @@
 	local base
 	base=${BASE##*/}
 	[[ -z $base || $base == '%' ]] && return
-	while (( $#base % 4 )); do
+	while (( $#base % 3 )); do
 		base+='='
 	done
 	tr <<<$base _- /+ | base64 -d