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Regex to find special characters from a String with some exceptions

Answer 1

+2 A:

That one matches all your bad samples:

(\!\*|\)\*|\(\*|\*\*|\*\.\*)

If you want more than these 4 cases, describe a bit better, what to allow and what to forbid.

Johannes Weiß 2009-02-13 18:17:40

Thanks Johannes for the response. But I was looking for a generic regex which works for any special character. It should catch all of the combination except *= and =*

arya 2009-02-13 18:20:12

Any occurrences of special characters which involve a * are to be caught. Only exception is *= and =*

arya 2009-02-13 18:21:45

define special character

Johannes Weiß 2009-02-13 18:24:55

anything which falls under \W Thanks.

arya 2009-02-13 18:28:16

ah ok, perl regex. Which library do you use? Perl itself?

Johannes Weiß 2009-02-13 18:30:46

I'm using this with Java pattern class

arya 2009-02-13 18:44:05

Answer 2

A:

I think you're looking for a regex with lookbehind and lookahead assertions. Something like:

(?!=[\=\s])\*(?![\=\s])

Jeff Moser 2009-02-13 18:25:44

Answer 3

+1 A:

try this

([^(\W\*)*(\*\W)*]|=\*|\*=)

gonxalo 2009-02-13 18:30:34

It works just opposite. It catches nothing but =* and *=

arya 2009-02-13 18:42:45

Answer 4

+2 A:

(\*[^\w=]|[^\w=]\*)

That matches a asterisk followed by any non-word character (other than an equals sign), or a non-word character followed by an asterisk/

tj111 2009-02-13 18:42:01

Thanks tj111. That works perfect.

arya 2009-02-13 18:55:58

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Regex to find special characters from a String with some exceptions

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