User:ArrowHead294/Regex snippets

These are some regular expressions I use for formatting purposes:

Pattern	Replace by	Purpose
^(?:\+|-|\x{2212})?(?:(?:\d{1,3}?(?:\,\d{3})*|\d+)\.?\d*|\d*\.?\d+)(?:[Ee][+-]?\d+)?$	N/A	Match a number
(?<=\n)(=+)\s*([^\|\{\}\r\n=]*)\s*(=+)\n or (?<=\n)(\=+)\s*([^\|\{\}\r\n\=]*)\s*(\=+)	$1 $2 $3	Space out equals signs for section headers*
(?<=\n)(\||!)[^\S\r\n]*\|?[^\S\r\n]*(?!-|\}|\+)	$1	Space out pipe characters and header separators in tables (one cell per line) and replace ! |  and | |  with !  and | , respectively
(?<=\{\|.*?\n)(?<!\|-\n)!	|-\n!	Insert table cell separator at top of table before first headers
(\d+[Ll])\s*(\d+[Ss])	$1&nbsp;$2	Make sure xL ys notation for MOS scales are non-wrapped
(\d+[Ll])\s*(\d+[Mm])\s*(\d+[Ss])	$1&nbsp;$2&nbsp;$3
(?<=(?:colspan|rowspan|id|style)="?.*?"?)\s*((?:\||!){1,3})\s*	$1	Space out inline cell separators*
<math>,*\s*\\frac(\d)(\d),*\s*<\/math>	{{frac|$1|$2}} or {{sfrac|$1|$2}}	Standalone fractions with single-digit numerators and denominators can be done using {{frac}} or {{sfrac}} and don't need to be TeXified

* Requires support for variable-width lookaheads and lookbehinds

See also

• User:Xenwolf/Regex snippets