# shell variables must consist of alphanumeric characters and underscores,
# and begin with an alphabetic character or underscore.
-VARNAME='[A-Za-z_][A-zA-z0-9_]*'
+VARNAME='[A-Za-z_][A-Za-z0-9_]*'
# For the assigned value we only accept a limited number of characters - none
# of which are shell metachars
-VARCHARS='A-Za-z0-9=/,.:_@#+-'
+VARCHARS='A-Za-z0-9=/,.:%_@#+-'
VARVAL="[${VARCHARS}]*"
sed -ne "s/\(${VARNAME}\)=\(${VARVAL}\)$/\1=\2/p" $1