break index with no breaks should return the length of the string
"".breakIndex.should.equal(0); "abc".breakIndex.should.equal(3);
break index with one break should return the position of the next item
"a b".breakIndex.should.equal(1); "a\tb".breakIndex.should.equal(1); "a\nb".breakIndex.should.equal(1); `"abc" "def"`.breakIndex.should.equal(5); `"a c" "def"`.breakIndex.should.equal(5); `'a c' "def"`.breakIndex.should.equal(5);
break index with escaped strings
`"a\"c" "def"`.breakIndex.should.equal(6); `'a\'c' "def"`.breakIndex.should.equal(6);
break index with bar string
`| a b |`.breakIndex.should.equal(8);