pbr (01/19/83)
I found a problem with the 'ul' program. It ignores
command line arguments if it thinks the user is on a dumb
terminal and certain other conditions are met. It calls cat
but forgets that argv has been incremented past the zeroth
argument, therefore, cat doesn't see the filename and defaults to
standard input. This is not a pretty solution, since it counts on
the fact that cat does not care what it is called. But it is a
very simple fix.
If cat did look at the zeroth argument, it would think it
was being called "ul". In any case, this is a bug that needs to be
fixed.
-Peter Reintjes
duke!mcnc!pbr
************** file ul.c *******************
58c58
< execv("/bin/cat",argv);
---
> execv("/bin/cat",--argv);
79c79
< execv("/bin/cat",argv);
---
> execv("/bin/cat",--argv);jim (01/20/83)
I didn't notice the exec("cat") bug, but in the version of ul that came
with our system there is no "argc--, argv++;" at the end of the while
loop that parses the command line options. The program could not
possibly have worked without it unless there were no options.