[daip] aips bug(?)

[Eric Greisen]

George Heald writes:
 > Hello,
 > 
 > This is George Heald at the University of New Mexico. I just wanted to let
 > you know about a (very) minor problem which I ran into. I noticed that
 > typing 'man ls', for example, would result in "No manual page for ls". At
 > first I thought that it was because I upgraded from RH 7.2 to 7.3, but then
 > I realized that AIPS was setting $MANPATH incorrectly for my system. The
 > problem is fixed, but in case you haven't run across it in the past, another
 > Linux newbie like myself might ask the question someday.
 > 
 > If you'd like more info let me know.

I am afraid I do need more info.  The code as I read it does 2
different things depending on whether $MANPATH is null or not.

If it is null, it gets set to /usr/man:$TST/SYSTEM/UNIX to include all
the maiun man pages from the unix system and the aips man page.

If it is not null, then each elemnt in the variable is stripped out
and if it is not the AIPS one it is appended to a temp variable which
starts with the AIPS one.  Afterwards, MANPATH is set to temp.  This
is to keep the path from growing and growing with additions of the
AIPS directory.

I am not a unix expert but this seems okay to me, so I need more
explanation.

Thanks, 

Eric Greisen