Regex syntax: Difference between revisions

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Revision as of 13:43, 18 April 2020

This article is currently a stub; it means I'm aware it's short and I probably intend to expand on the subject in the future!

I can never remember which programs use which regex variants, so here's a quick recap sheet.


	grep (GNU)	sed (GNU)	vim	python
capture	`\(` ... `\)`	`\(` ... `\)`	`\(` ... `\)`	`(` ... `)`
option	`\\|`	`\\|`	`\\|`	`\|`
word boundary	`\<` or `\>`	`\<` or `\>`	`\<` or `\>`	`\b`
zero or more	`*`	`*`	`*`	`*`
zero or more (non-greedy)			`\{-}`	`*?`
one or more	`\+`	`\+`	`\+`	`+`
one or more (non-greedy)			`\{-1,}`	`+?`

@@ Line 46: / Line 46: @@
 | <tt>\+</tt>
 | <tt>+</tt>
+|+
+| one or more (non-greedy)
+|
+|
+| <tt>\{-1,}</tt>
+| <tt>+?</tt>
 |}