pkg/60423: bmake help give spurious output

["rwhitlock22%gmail.com@localhost via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         60423
>Category:       pkg
>Synopsis:       bmake help give spurious output
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jul 07 18:15:00 +0000 2026
>Originator:     Robert Whitlock
>Release:        pkgsrc current
>Organization:
>Environment:
Darwin robs-MacBook-Pro.local 20.6.0 Darwin Kernel Version 20.6.0: Thu Jul  6 22:12:47 PDT 2023; root:xnu-7195.141.49.702.12~1/RELEASE_X86_64 x86_64
>Description:
Output of "bmake help" gives spurious output. In particular, it cites a file containing the term SUPERSEDES but that word does not occur in the file.
>How-To-Repeat:
$ cd pkgsrc
$ bmake help topic=SUPERSEDES
No help found for SUPERSEDES, but it occurs in:

mk/defaults/mk.conf
mk/pkgformat/pkg/metadata.mk
$ grep SUPERSEDES mk/defaults/mk.conf
$
>Fix: