# will be copied to the output literally
while [ "$in" ]; do
+ [ "$pfx" ] || case $in in
+ [0-9a-fA-F][0-9a-fA-F]*):;;
+ ?*) out="${out}${in%%"${in#?}"}"
+ in="${in#?}"; continue;;
+ esac
+
case $in in
"$pfx"[0-9a-fA-F][0-9a-fA-F]*) in="${in#${pfx}}";;
\\*) in="${in#?}"; out="${out}\\\\"; continue;;
\&*) out="${out}%26"; str="${str#?}";;
\"*) out="${out}%22"; str="${str#?}";;
\'*) out="${out}%27"; str="${str#?}";;
+ \`*) out="${out}%60"; str="${str#?}";;
\?*) out="${out}%3F"; str="${str#?}";;
\#*) out="${out}%23"; str="${str#?}";;
\[*) out="${out}%5B"; str="${str#?}";;