mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-24 07:20:37 +00:00
230 lines
9.1 KiB
Plaintext
230 lines
9.1 KiB
Plaintext
This file describes what you must or might want to do to termcap entries
|
|
to make terminals work properly and efficiently with Emacs. Information
|
|
on likely problems with specific types of terminals appears at the end
|
|
of the file.
|
|
|
|
*** What you want in a terminal ***
|
|
|
|
Vital
|
|
1. Easy to compute suitable padding for.
|
|
2. Never ever sends ^S/^Q unless you type them, at least in one mode.
|
|
|
|
Nice for speed
|
|
1. Supports insert/delete of multiple lines in one command.
|
|
2. Same for multiple characters, though doing them one by
|
|
one is usually fast enough except on emulators running on
|
|
machines with bitmap screens.
|
|
|
|
Nice for usability
|
|
1. Considerably more than 24 lines.
|
|
2. Meta key (shift-like key that controls the 0200 bit
|
|
in every character you type).
|
|
|
|
*** New termcap strings ***
|
|
|
|
Emacs supports certain termcap strings that are not described in the
|
|
4.2 manual but appear to be standard in system V. The one exception
|
|
is `cS', which I invented.
|
|
|
|
`AL' insert several lines. Takes one parameter, the number of
|
|
lines to be inserted. You specify how to send this parameter
|
|
using a %-construct, just like the cursor positions in the `cm'
|
|
string.
|
|
|
|
`DL' delete several lines. One parameter.
|
|
|
|
`IC' insert several characters. One parameter.
|
|
|
|
`DC' delete several characters. One parameter.
|
|
|
|
`rp' repeat a character. Takes two parameters, the character
|
|
to be repeated and the number of times to repeat it.
|
|
Most likely you will use `%.' for sending the character
|
|
to be repeated. Emacs interprets a padding spec with a *
|
|
as giving the amount of padding per repetition.
|
|
|
|
WARNING: Many terminals have a command to repeat the
|
|
*last character output* N times. This means that the character
|
|
will appear N+1 times in a row when the command argument is N.
|
|
However, the `rp' string's parameter is the total number of
|
|
times wanted, not one less. Therefore, such repeat commands
|
|
may be used in an `rp' string only if you use Emacs's special
|
|
termcap operator `%a-c\001' to subtract 1 from the repeat count
|
|
before substituting it into the string. It is probably safe
|
|
to use this even though the Unix termcap does not accept it
|
|
because programs other than Emacs probably won't look for `rp'
|
|
anyway.
|
|
|
|
`cs' set scroll region. Takes two parameters, the vertical
|
|
positions of the first line to include in the scroll region
|
|
and the last line to include in the scroll region.
|
|
Both parameters are origin-zero. The effect of this
|
|
should be to cause a following insert-line or delete-line
|
|
not to move lines below the bottom of the scroll region.
|
|
|
|
This is not the same convention that Emacs version 16 used.
|
|
That is because I was led astray by unclear documentation
|
|
of the meaning of %i in termcap strings. Since the termcap
|
|
documentation for `cs' is also unclear, I had to deduce the
|
|
correct parameter conventions from what would make the VT-100's
|
|
`cs' string work properly. From an incorrect assumption about
|
|
%i, I reached an incorrect conclusion about `cs', but the result
|
|
worked correctly on the VT100 and ANSII terminals. In Emacs
|
|
version 17, both `cs' and %i work correctly.
|
|
|
|
The version 16 convention was to pass, for the second parameter,
|
|
the line number of the first line beyond the end of the
|
|
scroll region.
|
|
|
|
`cS' set scroll region. Differs from `cs' in taking parameters
|
|
differently. There are four parameters:
|
|
1. Total number of lines on the screen.
|
|
2. Number of lines above desired scroll region.
|
|
3. Number of lines below (outside of) desired scroll region.
|
|
4. Total number of lines on the screen, like #1.
|
|
This is because an Ambassador needs the parameters like this.
|
|
|
|
`cr', `do', `le'
|
|
Emacs will not attempt to use ^M, ^J or ^H for cursor motion
|
|
unless these capabilities are present and say to use those
|
|
characters.
|
|
|
|
`km' Says the terminal has a Meta key.
|
|
|
|
Defining these strings is important for getting maximum performance
|
|
from your terminal.
|
|
|
|
Make sure that the `ti' string sets all modes needed for editing
|
|
in Emacs. For example, if your terminal has a mode that controls
|
|
wrap at the end of the line, you must decide whether to specify
|
|
the `am' flag in the termcap entry; whichever you decide, the `ti'
|
|
string should contain commands to set the mode that way.
|
|
(Emacs also sends the `vs' string after the `ti' string.
|
|
You can put the mode-setting commands in either one of them.)
|
|
|
|
*** Specific Terminal Types ***
|
|
|
|
Watch out for termcap entries for Ann Arbor Ambassadors that
|
|
give too little padding for clear-screen. 7.2 msec per line is right.
|
|
These are the strings whose padding you probably should change:
|
|
:al=1*\E[L:dl=1*\E[M:cd=7.2*\E[J:cl=7.2*\E[H\E[J:
|
|
I have sometimes seen `\E[2J' at the front of the `ti' string;
|
|
this is a clear-screen, very slow, and it can cause you to get
|
|
Control-s sent by the terminal at startup. I recommend removing
|
|
the `\E[2J' from the `ti' string.
|
|
The `ti' or `vs' strings also usually need stuff added to them, such as
|
|
\E[>33;52;54h\E[>30;37;38;39l
|
|
You might want to add the following to the `te' or `ve' strings:
|
|
\E[>52l\E[>37h
|
|
The following additional capabilities will improve performance:
|
|
:AL=1*\E[%dL:DL=1*\E[%dM:IC=4\E[%d@:DC=4\E[%dP:rp=1*%.\E[%a-c\001%db:
|
|
If you find that the Meta key does not work, make sure that
|
|
:km:
|
|
is present in the termcap entry.
|
|
|
|
Watch out for termcap entries for VT100's that fail to specify
|
|
the `sf' string, or that omit the padding needed for the `sf' and `sr'
|
|
strings (2msec per line affected). What you need is
|
|
:sf=2*^J:sr=2*\EM:cs=\E[%i%d;%dr:
|
|
|
|
The Concept-100 and Concept-108 have many modes that `ti' strings
|
|
often fail to initialize. If you have problems on one of these
|
|
terminals, that is probably the place to fix them. These terminals
|
|
can support an `rp' string.
|
|
|
|
Watch out on HP terminals for problems with standout disappearing on
|
|
part of the mode line. These problems are due to the absence of
|
|
:sg#0: which some HP terminals need.
|
|
|
|
The vi55 is said to require `ip=2'.
|
|
|
|
The Sun console should have these capabilities for good performance.
|
|
:AL=\E[%dL:DL=\E[%dM:IC=\E[%d@:DC=\E[%dP:
|
|
|
|
The vt220 needs to be set to vt220 mode, 7 bit, space parity
|
|
in order to work fully with TERM=vt220.
|
|
|
|
If you are using a LAT terminal concentrator, you need to issue these
|
|
commands to turn off flow control:
|
|
|
|
set port flow control disable
|
|
define port flow control disable
|
|
|
|
On System V, in the terminfo database, various terminals may have
|
|
the `xt' flag that should not have it. `xt' should be present only
|
|
for the Teleray 1061 or equivalent terminal.
|
|
|
|
In particular, System V for the 386 often has `xt' for terminal type
|
|
AT386 or AT386-M, which is used for the console. You should delete
|
|
this flag. Here is how:
|
|
|
|
You can get a copy of the terminfo "source" for at386 using the
|
|
command: `infocmp at386 >at386.tic'. Edit the file at386.tic and remove
|
|
the `xt' flag. Then compile the new entry with: `tic at386.tic'.
|
|
|
|
It is also reported that these terminal types sometimes have the wrong
|
|
reverse-scroll string. It should be \E[T, but sometimes is given as \E[S.
|
|
|
|
Here is what watserv1!maytag!focsys!larry recommends for these terminals:
|
|
|
|
# This copy of the terminfo description has been fixed.
|
|
# The suggestions came from a number of usenet postings.
|
|
#
|
|
# Intel AT/386 for color card with monochrome display
|
|
#
|
|
AT386-M|at386-m|386AT-M|386at-m|at/386 console,
|
|
am, bw, eo, xon,
|
|
cols#80, lines#25,
|
|
acsc=``a1fxgqh0jYk?lZm@nEooppqDrrsstCu4vAwBx3yyzz{{||}}~~,
|
|
bel=^G, blink=\E[5m, bold=\E[1m, cbt=\E[Z,
|
|
clear=\E[2J\E[H,
|
|
cr=\r, cub=\E[%p1%dD, cub1=\E[D, cud=\E[%p1%dB,
|
|
cud1=\E[B, cuf=\E[%p1%dC, cuf1=\E[C,
|
|
cup=\E[%i%p1%02d;%p2%02dH, cuu=\E[%p1%dA, cuu1=\E[A,
|
|
dch=\E[%p1%dP, dch1=\E[P, dl=\E[%p1%dM, dl1=\E[1M,
|
|
ech=\E[%p1%dX,ed=\E[J, el=\E[K, el1=\E[1K\E[X, flash=^G, home=\E[H,
|
|
hpa=\E[%i%p1%dG, ich=\E[%p1%d@, ich1=\E[1@, il=\E[%p1%dL, il1=\E[1L,
|
|
ind=\E[S, indn=\E[%p1%dS, invis=\E[9m,
|
|
is2=\E[0;10;38m, kbs=\b, kcbt=^], kclr=\E[2J,
|
|
kcub1=\E[D, kcud1=\E[B, kcuf1=\E[C, kcuu1=\E[A,
|
|
kdch1=\E[P, kend=\E[Y, kf1=\EOP, kf10=\EOY, kf11=\EOZ,
|
|
kf12=\EOA, kf2=\EOQ, kf3=\EOR, kf4=\EOS, kf5=\EOT,
|
|
kf6=\EOU, kf7=\EOV, kf8=\EOW, kf9=\EOX, khome=\E[H,
|
|
kich1=\E[@, knp=\E[U, kpp=\E[V, krmir=\E0, rev=\E[7m, ri=\E[T,
|
|
rin=\E[%p1%dT, rmacs=\E[10m, rmso=\E[m, rmul=\E[m,
|
|
sgr=\E[10m\E[0%?%p1%p3%|%t;7%;%?%p2%t;4%;%?%p4%t;5%;%?%p6%t;1%;%?%p9%t;12%;%?%p7%t;9%;m,
|
|
sgr0=\E[0;10m, smacs=\E[12m, smso=\E[7m, smul=\E[4m,
|
|
|
|
#
|
|
# AT&T 386 color console
|
|
#
|
|
AT386|at386|386AT|386at|at/386 console,
|
|
colors#8, ncv#3, pairs#64,
|
|
is2=\E[0;10;39m,
|
|
op=\E[0m,
|
|
setb=\E[%?%p1%{0}%=%t40m
|
|
%e%p1%{1}%=%t44m
|
|
%e%p1%{2}%=%t42m
|
|
%e%p1%{3}%=%t46m
|
|
%e%p1%{4}%=%t41m
|
|
%e%p1%{5}%=%t45m
|
|
%e%p1%{6}%=%t43m
|
|
%e%p1%{7}%=%t47m%;,
|
|
setf=\E[%?%p1%{0}%=%t30m
|
|
%e%p1%{1}%=%t34m
|
|
%e%p1%{2}%=%t32m
|
|
%e%p1%{3}%=%t36m
|
|
%e%p1%{4}%=%t31m
|
|
%e%p1%{5}%=%t35m
|
|
%e%p1%{6}%=%t33m
|
|
%e%p1%{6}%=%t33m
|
|
%e%p1%{7}%=%t37m%;,
|
|
use=at386-m,
|
|
#
|
|
# Color console version that supports underline but maps blue
|
|
# foreground color to cyan.
|
|
#
|
|
AT386-UL|at386-ul|386AT-UL|386at-ul|at/386 console,
|
|
is2=\E[0;10;38m,
|
|
use=at386,
|