regex – do not collect if formatted numbers before speific word anywhere in text string

Question

I do not want to match the regex if any formatted number, such as $1,000 appears anywhere before a specific word in the text string.

In this case the word to find is "expungement" – but only if there is NO formatted value before it.

So I would not want to match this string.

this is some initial text $11,000 recommends the expungement more text following

but this would be accepatable

this is some initial text expungement more text following

Thank you.

Asked By: diogenes

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Answer 1

A pattern you can use is:

^[^$]*(?!$[0-9,]+)expungement

To explain:

^ is start of string
[^$]* means match any character that is not ‘$’, 0 or more times
(?!x) means negative lookup for x. If x is found in the line, the match is negated
$[0-9,]+ is a literal dollar sign followed by any combination of digits and commas
Your desired string at the end

Answered By: dc-ddfe

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