Regex: exclude sequence

senhal · 04-06-2016, 02:31 AM

Hi, I'm using this regex to find all words ending with apostrophe, excluding the word po’.

Code:

(([^\s]..)|([^p].)|(.[^o]))’\b

Now I'd like to exclude other words (fa’, di’...), so I'm wondering if there is a way to exclude a sequence, something like:

Code:

(?!(\bpo|\bfa|\bdi))’\b

or

Code:

[^(<\bpo>|<\bfa>|<\bdi>)]’\b

(I know these examples don't work... but I hope I gave an idea about what I'm searching for)

eschwartz · 04-06-2016, 10:02 AM

The negative lookahead is a "zero-width assertion" -- it still needs something else to actually match a string.

See here for an excellent explanation: https://stackoverflow.com/questions/.../406408#406408

senhal · 04-07-2016, 10:08 AM

Quote:

Originally Posted by eschwartz

The negative lookahead is a "zero-width assertion" -- it still needs something else to actually match a string.

See here for an excellent explanation: https://stackoverflow.com/questions/.../406408#406408

Thanks, I'm reading it

04-06-2016, 02:31 AM	#1
senhal Connoisseur Posts: 83 Karma: 25684 Join Date: Sep 2014 Device: Kindle NT	Regex: exclude sequence Hi, I'm using this regex to find all words ending with apostrophe, excluding the word po’. Code: (([^\s]..)\|([^p].)\|(.[^o]))’\b Now I'd like to exclude other words (fa’, di’...), so I'm wondering if there is a way to exclude a sequence, something like: Code: (?!(\bpo\|\bfa\|\bdi))’\b or Code: [^(<\bpo>\|<\bfa>\|<\bdi>)]’\b (I know these examples don't work... but I hope I gave an idea about what I'm searching for) Last edited by senhal; 04-06-2016 at 03:21 AM.

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04-06-2016, 10:02 AM	#2
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	The negative lookahead is a "zero-width assertion" -- it still needs something else to actually match a string. See here for an excellent explanation: https://stackoverflow.com/questions/.../406408#406408

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