User:ArrowHead294/Regex snippets

These are some regular expressions I use for formatting purposes:

ArrowHead294's regular expressions for formatting Wiki markup

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*(\=+)(?=\n)	$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) Replace ! |  with !  and | |  with |
(?<=\{\|.*?\n(?:\|\+.*?\n)?)(?<!\|-\n)(\||!)	|-\n$1	Insert table cell separator at top of table before first headers
(?<=(?:\||!).*?)(?<!-)\n+(?!\||!)	<br />	Replace linebreaks in cells with <br />
(\d+[Ll])\s*(\d+[Ss])	$1&nbsp;$2	Make sure xL ys is non-wrapped
(\d+[Ll])\s*(\d+[Mm])\s*(\d+[Ss])	$1&nbsp;$2&nbsp;$3
(class|colspan|rowspan|id|scope|style)="?(.*?)"?[^\S\r\n]*((?:\||!){1,3})[^\S\r\n]*(.*?)(?=\n)	$1="$2" $3 $4	Space out inline cell separators*
(?<!\n|\{)[^\S\r\n]*(?<!\[\[:?\w+:.*?)((?:\||!){1,3})[^\S\r\n]*(.*?)(?=\n)	$1
(?<=(?:\{\{|\[\[).*?)\s+(\|)\s+	|
(?<=\n)((?:\*|:)+)\s*	$1	Space out asterisks, number signs, and colons for lists
(?<=\{\|.*?\n(?:\|\+.*?\n)?)(\||!)(?!-|\}|\+)	|-\n$1	Add in |- before first row after caption (not strictly necessary, but including it is good practice)
<math>,*\s*\\frac(\d)(\d),*\s*<\/math>	{{frac|$1|$2}} or {{sfrac|$1|$2}}	Standalone fractions with single-digit numerators and denominators don't need to be TeXified

* Requires support for variable-width lookaheads and lookbehinds

See also

• User:Xenwolf/Regex snippets