[GRASS5] PAGER changed to GRASS_PAGER

[Glynn Clements]

Markus Neteler wrote:

> > > I would suspect that most of the actual programs can be changed,
> > > although more consideration needs to be given to library functions. 
> > > It seems conceivable that spawning "less" in the wrong place (e.g.
> > > from within an interactive program) might cause problems.
> > 
> > Hmmm. Then we probably should list this as a TODO item and leave
> > changing "more" to "GRASS_PAGER" until after 5.0. Markus, any comments?
> 
> Of course we should experiment too much now... However, I dislike the
> "less" behaviour in i.group and others, if you "list" the existing
> groups. reason: "less" doesn't exit immediately but waits for the user
> pressing "q" to quit. That's very inconvenient. If I switch to "more",
> the available groups are listed and "more" is left.

Does setting GRASS_PAGER to "less -F" help? From the less manpage:

       -F or --quit-if-one-screen
              Causes less to automatically  exit  if  the  entire
              file can be displayed on the first screen.

Or does this screw other cases?

In any case, I wasn't suggesting hard-coding "more" in cases where
"less" was "not ideal". I was more concerned about the possibility of
it trashing terminal settings. I don't see this as an issue within
individual programs; If it occurs, the program can be modified to
reset the terminal to the desired state afterwards.

I was more concerned about ensuring that library functions don't have
undesirable side effects.

-- 
Glynn Clements <glynn.clements at virgin.net>

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