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
(?<!(<\/\w+>[^\n]*)|\{|\})(?<=\n)(\||!)\s*(?!-|<\/\w+>|\{|\}) \1  Space out pipe characters and header separators in tables
(one cell per line)*
(?<!(?:<\/\w+>[^\n]*(?=<\/\w+>)|\{|\}))[^\S\r\n]*(\|\|\|?|!!!?)[^\S\r\n]*(?!-|[^\n]*<\/\w+>(?=<\/\w+>)|\{|\})  \1  Space out pipe characters and header separators in tables
(entire row per line)*

* Requires support for variable-length lookaheads and lookbehinds