How to write such a regex?

Question

ruby

Hello. I'm trying to write a regular expression to highlight text to the right and left of a given word, resting on the end of the previous sentence on the left, or on a colon or the end of repetitions on the right. The results that I am trying to achieve on the screen:

Here is what I was able to come up with:

word = 'RESPONSIBILITY'
/([A-Z].)*(?=#{word})\s*([A-Z].+:)/

But it works, to put it mildly, not quite as it should:

Perhaps someone can help.

Answer 1

Maybe so https://regex101.com/r/kE7wH3/5
In the subpattern with a word, you can leave any one word or add more words through "|"... In general, the searched word should be inserted into this subpattern.

Answer 2

Like so
https://regex101.com/r/kE7wH3/4