- /* Check for duplicated non-null profile entries. Also ignore
- profile entries that are just "#", because that's what the
- mh-profile man page suggests using for comments. Only do
- this check on the very first call from context_read(), when
- opp is
- NULL. */
+ /* Check for duplicated non-null profile entries. Except
+ allow multiple profile entries named "#", because that's
+ what the mh-profile man page suggests using for comments.
+
+ Only do this check on the very first call from
+ context_read(), when opp is NULL. That way, entries in
+ mhn.defaults can be overridden without triggering
+ warnings.
+
+ Note that that mhn.defaults, $MHN, $MHBUILD, $MHSHOW, and
+ $MHSTORE all put their entries into just one list, m_defs,
+ the same list that the profile uses. */