.. 0 1 1 application/xhtml+xml 1 Convert single quotes to curly ones (\W)' \1‘ ' ’ Convert double quotes to curly ones (\W)" \1“ " ” Convert single dashes to n-dashes ([^\-])\-([^\-]) \1–\2 ([^\-])\-$ \1– ^\-([^\-]) –\1 ^\-$ – Convert double dashes to m-dashes ([^\-])\-\-([^\-]) \1—\2 ([^\-])\-\-$ \1— ^\-\-([^\-]) —\1 ^\-\-$ — Reduce whitespace in source [\n\r\t] \x20 [ ]{2} \x20