Regex syntax - Revision history

Vegard: fix bug

2020-05-20T08:14:56Z

fix bug

← Older revision		Revision as of 08:14, 20 May 2020
Line 58:		Line 58:
	\| <tt>\+</tt>		\| <tt>\+</tt>
	\| <tt>\+</tt>		\| <tt>\+</tt>
			\| <tt>+</tt>
	\| <tt>+</tt>		\| <tt>+</tt>
	\|+		\|+

Vegard at 08:00, 20 May 2020

2020-05-20T08:00:22Z

← Older revision		Revision as of 08:00, 20 May 2020
Line 9:		Line 9:
	! sed (GNU)		! sed (GNU)
	! vim		! vim
	! less		! less (GNU)
	! python		! python
	\|+		\|+

Vegard: less

2020-05-20T07:59:55Z

less

← Older revision		Revision as of 07:59, 20 May 2020
Line 9:		Line 9:
	! sed (GNU)		! sed (GNU)
	! vim		! vim
			! less
	! python		! python
	\|+		\|+
Line 15:		Line 16:
	\| <tt>\(</tt> ... <tt>\)</tt>		\| <tt>\(</tt> ... <tt>\)</tt>
	\| <tt>\(</tt> ... <tt>\)</tt>		\| <tt>\(</tt> ... <tt>\)</tt>
			\| <tt>(</tt> ... <tt>)</tt>
	\| <tt>(</tt> ... <tt>)</tt>		\| <tt>(</tt> ... <tt>)</tt>
	\|+		\|+
Line 21:		Line 23:
	\| <tt><nowiki>\\|</nowiki></tt>		\| <tt><nowiki>\\|</nowiki></tt>
	\| <tt><nowiki>\\|</nowiki></tt>		\| <tt><nowiki>\\|</nowiki></tt>
			\| <tt><nowiki>\|</nowiki></tt>
	\| <tt><nowiki>\|</nowiki></tt>		\| <tt><nowiki>\|</nowiki></tt>
	\|+		\|+
	\| word boundary		\| word boundary
			\| <tt>\<</tt> or <tt>\></tt>
	\| <tt>\<</tt> or <tt>\></tt>		\| <tt>\<</tt> or <tt>\></tt>
	\| <tt>\<</tt> or <tt>\></tt>		\| <tt>\<</tt> or <tt>\></tt>
	\| <tt>\<</tt> or <tt>\></tt>		\| <tt>\<</tt> or <tt>\></tt>
	\| <tt>\b</tt>		\| <tt>\b</tt>
			\|+
			\| zero or one
			\| <tt>\?</tt>
			\| <tt>\?</tt>
			\| <tt>\?</tt>
			\| <tt>?</tt>
			\| <tt>?</tt>
	\|+		\|+
	\| zero or more		\| zero or more
			\| <tt>*</tt>
	\| <tt>*</tt>		\| <tt>*</tt>
	\| <tt>*</tt>		\| <tt>*</tt>
Line 39:		Line 51:
	\|		\|
	\| <tt>\{-}</tt>		\| <tt>\{-}</tt>
			\| (unknown)
	\| <tt>*?</tt>		\| <tt>*?</tt>
	\|+		\|+
Line 51:		Line 64:
	\|		\|
	\| <tt>\{-1,}</tt>		\| <tt>\{-1,}</tt>
			\| (unknown)
	\| <tt>+?</tt>		\| <tt>+?</tt>
	\|}		\|}

Vegard: add references

2020-04-18T13:58:21Z

add references

← Older revision		Revision as of 13:58, 18 April 2020
Line 53:		Line 53:
	\| <tt>+?</tt>		\| <tt>+?</tt>
	\|}		\|}

			== References ==

			* https://www.gnu.org/software/grep/manual/html_node/Regular-Expressions.html
			* http://vimregex.com/
			* https://docs.python.org/3/library/re.html

	[[Category:Programming]]		[[Category:Programming]]

Vegard at 13:51, 18 April 2020

2020-04-18T13:51:12Z

← Older revision		Revision as of 13:51, 18 April 2020
Line 55:		Line 55:

	[[Category:Programming]]		[[Category:Programming]]
			[[Category:Cheat sheets]]

Vegard: update table

2020-04-18T13:43:32Z

update table

← Older revision		Revision as of 13:43, 18 April 2020
Line 46:		Line 46:
	\| <tt>\+</tt>		\| <tt>\+</tt>
	\| <tt>+</tt>		\| <tt>+</tt>
			\|+
			\| one or more (non-greedy)
			\|
			\|
			\| <tt>\{-1,}</tt>
			\| <tt>+?</tt>
	\|}		\|}

Vegard: update table

2020-04-18T13:39:38Z

update table

← Older revision		Revision as of 13:39, 18 April 2020
Line 34:		Line 34:
	\| <tt>*</tt>		\| <tt>*</tt>
	\| <tt>*</tt>		\| <tt>*</tt>
			\|+
			\| zero or more (non-greedy)
			\|
			\|
			\| <tt>\{-}</tt>
			\| <tt>*?</tt>
	\|+		\|+
	\| one or more		\| one or more

Vegard: update table

2020-04-18T13:31:33Z

update table

@@ Line 28: / Line 28: @@
 | <tt>\<</tt> or <tt>\></tt>
 | <tt>\b</tt>
 |}

Vegard: new page

2020-04-18T13:26:51Z

new page

New page

{{Stub}}

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

{| class="wikitable"
|+
!
! grep (GNU)
! sed (GNU)
! vim
! python
|+
| capture
| <tt>\(</tt> ... <tt>\)</tt>
| <tt>\(</tt> ... <tt>\)</tt>
| <tt>\(</tt> ... <tt>\)</tt>
| <tt>(</tt> ... <tt>)</tt>
|+
| option
| <tt><nowiki>\|</nowiki></tt>
| <tt><nowiki>\|</nowiki></tt>
| <tt><nowiki>\|</nowiki></tt>
| <tt><nowiki>|</nowiki></tt>
|+
| word boundary
| <tt>\<</tt> or <tt>\></tt>
| <tt>\<</tt> or <tt>\></tt>
| <tt>\<</tt> or <tt>\></tt>
| <tt>\b</tt>
|}

[[Category:Programming]]