* bug #14977: sbr/context_read.c: special case an MHCONTEXT of
"/dev/null" and don't try to lock it.
+ * bug #9228, debian bug #146449: man/mh-profile.man: make it clearer
+ that lower case environment variables (and in particular mheditor)
+ are internal to nmh and not intended to be set by the user.
+
2005-11-09 Peter Maydell <pmaydell@chiark.greenend.org.uk>
* sbr/mf.c: fix buffer overrun with absurdly long addresses
.IR whatnowproc ,
including
one of the standard shells. As a result, it's not possible to pass
-information via an argument list.
+information via an argument list. The convention is that environment
+variables whose names are all upper-case are user-settable; those
+whose names are lower-case only are used internally by nmh and should
+not generally be set by the user.
.PP
If the
.B WHATNOW
.PP
.B $mheditor
.RS 5
-This is set to tell the
+This is set by
+.BR comp ,
+.BR repl ,
+.BR forw ,
+and
+.B dist
+to tell the
.I whatnowproc
the user's choice of
editor (unless overridden by