esac
case $in in
- "$pfx"[0-9a-fA-F][0-9a-fA-F]*) in="${in#${pfx}}";;
+ "$pfx"[0-9a-fA-F][0-9a-fA-F]*) in="${in#"${pfx}"}";;
\\*) in="${in#?}"; out="${out}\\\\"; continue;;
%*) in="${in#?}"; out="${out}%%"; continue;;
*) att="${in%%"${pfx}"*}"; att="${att%%%*}"; att="${att%%\\*}"