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\t]+)\s*(=+)(?=\n*)	$1 $2 $3	Space out equals signs for section headers*
(?<=\n)\|\s*(?!-|\{|\})	$1	Space out pipe characters and header separators in tables (one cell per line)*
(?<=\[\[|\|)(\d+[Ll])\s*(\d+[Ss])(?=\]\]])?(?!\s)	$1 $2	Make sure xL ys notation for MOS scales are non-wrapped
(?<!(?:<(\w+-)*\w+>[^\n]*(?=<\/(\w+-)*\w+>)|\{|\}))[^\S\r\n]*(\|\|\|?|!!!?)[^\S\r\n]*(?!-|[^\n]*<\/(\w+-)*\w+>(?=<(\w+-)*\w+>)|\{|\})	$1	Space out pipe characters and header separators in tables (entire row per line)*
<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-length lookaheads and lookbehinds

See also

• User:Xenwolf/Regex snippets