User:ArrowHead294/Regex snippets: Difference between revisions

Revision as of 15:34, 4 December 2024

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.?\s)(=+)(?=\n*)`	`$1 $2 $3`	Space out equals signs for section headers*
`(?<!(<\/\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)*
`<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

@@ Line 6: / Line 6: @@
 ! style="width: 10%;" | Replace by
 ! style="width: 20%;" | Purpose
-|- style="border-bottom: double;
+|-
 | <code><nowiki>^(?:\+|-|\x{2212})?(?:(?:\d{1,3}?(?:\,\d{3})*|\d+)\.?\d*|\d*\.?\d+)(?:[Ee][+-]?\d+)?$</nowiki></code>
 | N/A
 | Match a number
+|- style="border-top: double;
+| <code><nowiki>(?<=\n*)(=+)(\s*.*?\s*)(=+)(?=\n*)</nowiki></code>
+| <code>$1 $2 $3</code>
+| Space out equals signs for section headers*
 |-
 | <code><nowiki>(?<!(<\/\w+>[^\n]*)|\{|\})(?<=\n)(\||!)\s*(?!-|<\/\w+>|\{|\})</nowiki></code>