Unexpected --count-matches result

[knutwannheden]

What version of ripgrep are you using?

ripgrep 12.0.1 (rev 1d5b1011e5)
-SIMD -AVX (compiled)

How did you install ripgrep?

Choco

What operating system are you using ripgrep on?

Windows 10

Describe your bug.

I have a pattern (with look-around) which with --count reports 2 but with --count-matches reports 0. This doesn't appear to make sense. I would expect ``--count-matchesto report a number at least as high as--count`.

What are the steps to reproduce the behavior?

File test.txt with contents:

def A;
def B;
use A;
use B;

Ripgrep usage:

rg --pcre2 -U '(?s)def (\w+);(?=.*use \w+)' test.txt --count-matches

What is the actual behavior?

The output is 0 whereas the output for the same command with --count instead of --count-matches is 2.

What is the expected behavior?

I would expect an output of 2 and generally the result of --count-matches to be equal to or greater than that of --count.