HP-UX Reference (11i v2 03/08) - 4 File Formats (vol 8)

t
terminfo(4) terminfo(4)
(ENHANCED CURSES)
mode, is present.
If the terminal has a way of flashing the screen to indicate an error quietly (a bell replacement), then this
can be given as flash; it must not move the cursor. A good flash can be done by changing the screen
into reverse video, pad for 200 ms, then return the screen to normal video.
If the cursor needs to be made more visible than normal when it is not on the bottom line (to make, for
example, a nonblinking underline into an easier to find block or blinking underline) give this sequence as
cvvis. The boolean chts should also be given. If there is a way to make the cursor completely invisi-
ble, give that as civis. The capability cnorm should be given, which undoes the effects of either of
these modes.
If your terminal generates underlined characters by using the underline character (with no special
sequences needed) even though it does not otherwise overstrike characters, then specify the capability
ul. For devices on which a character overstriking another leaves both characters on the screen, specify
the capability os. If overstrikes are erasable with a blank, then this should be indicated by specifying
eo.
If there is a sequence to set arbitrary combinations of modes, this should be given as sgr (set attributes),
taking nine arguments. Each argument is either 0 or nonzero, as the corresponding attribute is on or off.
The nine arguments are, in order: standout, underline, reverse, blink, dim, bold, blank, protect, alter-
nate character set. Not all modes need to be supported by sgr; only those for which corresponding
separate attribute commands exist should be supported. For example, let’s assume that the terminal in
question needs the following escape sequences to turn on various modes.
tparm()
Argument Attribute Escape Sequence
none \E[0m
p1 standout \E[0;4;7m
p2 underline \E[0;3m
p3 reverse \E[0;4m
p4 blink \E[0;5m
p5 dim \E[0;7m
p6 bold \E[0;3;4m
p7 invis \E[0;8m
p8 protect not available
p9 altcharset ˆO (off) ˆN (on)
Note that each escape sequence requires a 0 to turn off other modes before turning on its own mode. Also
note that, as suggested above, standout is set up to be the combination of reverse and dim. Also, because
this terminal has no bold mode, bold is set up as the combination of reverse and underline. In addition, to
allow combinations, such as underline+blink, the sequence to use would be \E[0;3;5m. The terminal
doesn’t have protect mode, either, but that cannot be simulated in any way, so p8 is ignored. The
altcharset mode is different in that it is either ˆO or ˆN, depending on whether it is off or on. If all
modes were to be turned on, the sequence would be:
\E[0;3;4;5;7;8mˆN
Now look at when different sequences are output. For example, ;3 is output when either p2 or p6 is
true, that is, if either underline or bold modes are turned on. Writing out the above sequences, along
with their dependencies, gives the following:
HP-UX 11i Version 2: August 2003 − 18 − Hewlett-Packard Company Section 4−−329