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Remove everything else after a matched pattern

You can use capturing group and backreference.

For example, in Javascript:

"this is one nasty
string nobody likes".replace(/(nasty string).*$/,
// => "this is one nasty string"

Alternatively, you can use positive lookbehind assertion if you regular expression engine support it.

>>> # Python
>>> import re
>>> re.sub('(?<=nasty string).*$', '',
"this is one nasty string nobody likes")
'this is one nasty string'

Categories : Regex

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