1 s/"\([^"]*\)"/\1/g 2 s/`\([^`']*\)'/\1/g 3 s/ '\([^`']*\)' / \1 /g 4 s/ '\([^`']*\)'$/ \1/g 5 s/^'\([^`']*\)' /\1 /g 6 s//""/g 7
