CODEWITHSUNDEEP
regex
nencor
nencor

Reputation: 1651

how to Exclude specific word using regex?

i have a problem here, i have the following string

@Novriiiiii yauda busana muslim @nencor haha. wa'alaikumsalam noperi☺

then i use this regex pattern to select all the string

\w+

however, i need to to select all the string except the word which prefixed with @ like @Novriiiiii or @nencor which means, we have to exclude the @word ones

how do i do that ?

ps. i am using regexpal to compile the regex. and i want to apply the regex pattern into yahoo pipes regex. thank you

Upvotes: 1

Views: 1739

Answers (6)

Casimir et Hippolyte
Casimir et Hippolyte

Reputation: 89639

A way to do that is to remove words that you don't want. Example:

find: @\w+
replace: empty string

you obtain the text without @abcdef words.

Upvotes: 0

Thomas
Thomas

Reputation: 182083

Another option is to include the @ symbol in the word:

[\w@]+

And then add another step in your Pipe to filter out all words that start with an @.

Upvotes: 0

Thomas
Thomas

Reputation: 182083

If you cannot use a negative lookbehind as other answers have already suggested, here's a workaround.

\w already doesn't match the @ character, so you'd want something like this:

[^@]\w+

But this will (a) not work at the beginning of the string, and (b) include the character before the word in the match. To fix (a), we can do:

(^|[^@])\w+

To fix (b), we parenthesize the part we want:

(^|[^@])(\w+)

Then use $2 or \2 (depending on regex dialect) to refer to the matched word.

Upvotes: 0

Santosh Panda
Santosh Panda

Reputation: 7351

This would sole your problem indeed:

[^@\w+][\w.]+

Check this link: http://regexr.com?34tq7

Upvotes: 0

Tadgh
Tadgh

Reputation: 2049

Does this suit your needs?

http://rubular.com/r/uuXvNrUiGJ

[^@\w+]\w+

Upvotes: 0

Explosion Pills
Explosion Pills

Reputation: 191819

You can use a negative lookbehind so that if a word is preceded by @ it is excluded. You also need a word boundary before the word or else the lookbehind will only affect the first character.

(?<!@)\b\w+

http://rubular.com/r/ONEl70Am5Q

Upvotes: 2

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