User:ArrowHead294/Regex snippets: Difference between revisions

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| Match a number
| Match a number
|- style="border-top: double;
|- style="border-top: double;
| <code><nowiki>(?<=\n)(=+)\s*([^\|\{\}\r\n]*)\s*(=+)</nowiki></code><br />or <code><nowiki>(?<=\n)(\=+)\s*([^\|\{\}\r\n\]*)\s*(\=+)</nowiki></code>
| <code><nowiki>(?<=\n)(=+)\s*([^\|\{\}\r\n=]*)\s*(=+)\n</nowiki></code><br />or <code><nowiki>(?<=\n)(\=+)\s*([^\|\{\}\r\n\=]*)\s*(\=+)</nowiki></code>
| <code>$1 $2 $3</code>
| <code>$1 $2 $3</code>
| Space out equals signs for section headers*
| Space out equals signs for section headers*

Revision as of 16:21, 25 January 2025

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 xys 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