Wild vi diagnostic after "stty susp ^@" under 4.[12] (with fix)-REPOST
Arthur David Olson
ado at elsie.UUCP
Sat Sep 15 08:59:47 AEST 1984
Bugee--
/usr/src/cmd/ex/ex_tty.c on 4.1bsd
/usr/src/ucb/ex/ex_tty.c on 4.2bsd
/and/may/be/a/bug on 2.?bsd
Bug--
The programs "vi" and "ex" produce a spurious "Missing lhs" diagnostic
if run after you have issued a
stty susp ^@
command.
Repeat by--
stty susp ^@
ex
Partial cure--
This "cure" gets rid of the spurious diagnostic.
Alas, when the user tries to suspend their job by typing ^@,
"vi" and "ex" will proceed to beep at them. Any ideas?
ed /usr/src/cmd/ex/ex_tty.c
/ldisc == NTTYDISC/i
#ifdef OLDVERSION
.
/ldisc == NTTYDISC/a
#else
if (ldisc == NTTYDISC && olttyc.t_suspc != '\0') {
#endif
.
w
q
Bugout--
I encountered this bug on a Masscomp system, where ASCII NUL is
returned in ioctl structures to indicate that there's no character you
can type to cause the control function associated with the structure
element. I KNOW it's a pretty outre bug to be reporting.
--
...decvax!seismo!umcp-cs!elsie!ado (301) 496-5688
(DEC, VAX and Elsie are Digital Equipment Corp. and Borden's trademarks)
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