Repeating Capture Groups

Question

I'm trying to write a regular expression that captures the following:

The question which is one line (begins with "Q:")
An indeterminate number of paragraphs following the initial capture, stopping before the next "Q:"

Here's what I've got so far, but I'm striking out:

Not working:

(Q:.*?\n){1}(?!Q:)(.+)*
(Q:.*?\n){1}(?!Q:)(.+\n+)

What I've got so far works for the top two, but the moment I add in new lines, it doesn't capture subsequent paragraphs.

What am I missing?

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You're looking for something like `(?sm)Q: (?:.(?!^Q:))+` or `(?s)Q: .*?(?=\nQ:|$)`. Make sure to use `s` flag or DOTALL — CertainPerformance, Aug 21 '20 at 05:30

41686d6564 stands w. Palestine · Accepted Answer · 2020-08-21T05:36:24.337

You may use the following pattern:

^(Q:.*?\n)(?!Q:)([\s\S]+?(?=^Q:|\Z))

Demo.

Breakdown:

^(Q:.*?\n)     # Matches "Q:" at the beginning of the line, followed by
               # some optional text ending with a line-feed.
(?!Q:)         # Not immediately followed by another "Q:".
(              # Start of the second capturing group.
    [\s\S]+?   # Matches one or more characters (including line breaks) - non-greedy.
    (?=^Q:|\Z) # Stop matching if either followed by "Q:" or is at the end of the string.
)              # End of the second capturing group.

Repeating Capture Groups

1 Answers1