confuse 2.7
1: s/"\([^"]*\)"/“\1”/g 2: s/`\([^`']*\)'/‘\1’/g 3: s/ '\([^`']*\)' / ‘\1’ /g 4: s/ '\([^`']*\)'$/ ‘\1’/g 5: s/^'\([^`']*\)' /‘\1’ /g 6: s/“”/""/g 7: s/“/“[1m/g 8: s/”/[0m”/g 9: s/‘/‘[1m/g 10: s/’/[0m’/g