Definitely nothing going to STDERR.

In case it matters, the bold lines look this:
C:\a\file [AFLAG]

Perhaps the bolded '[' means something to perl IO? I'm grasping at straws.

In reply to Re^2: Perl ignores lines with bold characters from a pipe on Windows by kingkongrevenge
in thread Perl ignores lines with bold characters from a pipe on Windows by kingkongrevenge

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