Clunch protection

[Guy Harris]

> Well,
> 
>     even
>         export PATH || echo "Don't use csh you clunch"
> 
>     doesn't work *every* time.  Our csh gets the "||" and "&&"
> just backwards from sh.  I remember that Guy Harris (rlgvax!guy)
> pointed this out once, too.  So, when I tried it out (just testing,
> of course!) it failed miserably.
> 
>     Most of the time, if I point out a problem I like to include a
> solution, but for this --- any takers?

If you've got the source to your C shell, change the line somewhere
around line 286 in "sh.sem.c" from something like

	if ((getn(value("status")) != 0) != (t->t_dtyp == TAND))

or possibly

	if ((getn(value("status")) == 0) == (t->t_dtyp == TAND))

to

	if ((getn(value("status")) == 0) != (t->t_dtyp == TAND))

which will fix the problem quite nicely.  If you don't have the source,
find out who does and pester them to fix it.  The C shell is supposed to
handle "&&" and "||" the same as the Bourne shell, and the 4.2BSD (and,
I think, 4.1BSD) versions do.  It was a bug in earlier versions.

	Guy Harris
	{seismo,ihnp4,allegra}!rlgvax!guy