Shell Programming and Scripting

g () {
if [ -n "$2" ]
then
 i=
 for s in $2
 do
	i="$i --include=*.$s"
 done
 else
	i='--include=*.txt --include=*.ini --include=*.*sh --include=*.c* --include=*.h --include=*.js --include=*.reg'
fi
grep -P -e \'$1\' -r "$i"
}

$ g sys ini
grep:  --include=*.ini: No such file or directory

echo grep -P -e \'$1\' -r "$i"

$ g sys ini
grep -P -e 'sys' -r  --include=*.ini