PASS var r2 = reg; r2.x = 2; reg.x is 2
PASS str.match(re).toString() is 'Chapter 3.4.5.1,Chapter 3.4.5.1,.1'
PASS str.match(/d/gi).toString() is 'D,d'
PASS var r2 = reg; r2.x = 2; reg.x is 2
PASS str.match(re).toString() is 'Chapter 3.4.5.1,Chapter 3.4.5.1,.1'
PASS str.match(/d/gi).toString() is 'D,d'