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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
# TTYSO -- Turn "standout" mode on or off.
procedure ttyso (fd, tty, onflag)
int fd, onflag
pointer tty
char cap[2]
bool ttygetb()
int junk, ttyctrl()
errchk ttygetb
begin
# Select name of capability (so, se, us, ue). Use so/se if it is
# available for the terminal, otherwise try us/ue.
if (ttygetb (tty, "so")) {
cap[1] = 's'
cap[2] = 'o'
} else {
cap[1] = 'u'
cap[2] = 's'
}
if (onflag == NO)
cap[2] = 'e'
cap[3] = EOS
# Output the control sequence. If cap is not available for the
# terminal, nothing will be output.
junk = ttyctrl (fd, tty, cap, 1)
end
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