code.delx.au - gnu-emacs/blob - etc/TERMS

   1 This file describes what you must or might want to do to termcap entries
   2 to make terminals work properly and efficiently with Emacs.  Information
   3 on likely problems with specific types of terminals appears at the end
   4 of the file.
   5
   6 *** What you want in a terminal ***
   7
   8 Vital
   9 1. Easy to compute suitable padding for.
  10 2. Never ever sends ^S/^Q unless you type them, at least in one mode.
  11
  12 Nice for speed
  13 1. Supports insert/delete of multiple lines in one command.
  14 2. Same for multiple characters, though doing them one by
  15 one is usually fast enough except on emulators running on
  16 machines with bitmap screens.
  17
  18 Nice for usability
  19 1. Considerably more than 24 lines.
  20 2. Meta key (shift-like key that controls the 0200 bit
  21 in every character you type).
  22
  23 *** New termcap strings ***
  24
  25 Emacs supports certain termcap strings that are not described in the
  26 4.2 manual but appear to be standard in system V.  The one exception
  27 is `cS', which I invented.
  28
  29 `AL'    insert several lines.  Takes one parameter, the number of
  30         lines to be inserted.  You specify how to send this parameter
  31         using a %-construct, just like the cursor positions in the `cm'
  32         string.
  33
  34 `DL'    delete several lines.  One parameter.
  35
  36 `IC'    insert several characters.  One parameter.
  37
  38 `DC'    delete several characters.  One parameter.
  39
  40 `rp'    repeat a character.  Takes two parameters, the character
  41         to be repeated and the number of times to repeat it.
  42         Most likely you will use `%.' for sending the character
  43         to be repeated.  Emacs interprets a padding spec with a *
  44         as giving the amount of padding per repetition.
  45
  46         WARNING: Many terminals have a command to repeat the
  47         *last character output* N times.  This means that the character
  48         will appear N+1 times in a row when the command argument is N.
  49         However, the `rp' string's parameter is the total number of
  50         times wanted, not one less.  Therefore, such repeat commands
  51         may be used in an `rp' string only if you use Emacs's special
  52         termcap operator `%a-c\001' to subtract 1 from the repeat count
  53         before substituting it into the string.  It is probably safe
  54         to use this even though the Unix termcap does not accept it
  55         because programs other than Emacs probably won't look for `rp'
  56         anyway.
  57
  58 `cs'    set scroll region.  Takes two parameters, the vertical
  59         positions of the first line to include in the scroll region
  60         and the last line to include in the scroll region.
  61         Both parameters are origin-zero.  The effect of this
  62         should be to cause a following insert-line or delete-line
  63         not to move lines below the bottom of the scroll region.
  64
  65         This is not the same convention that Emacs version 16 used.
  66         That is because I was led astray by unclear documentation
  67         of the meaning of %i in termcap strings.  Since the termcap
  68         documentation for `cs' is also unclear, I had to deduce the
  69         correct parameter conventions from what would make the VT-100's
  70         `cs' string work properly.  From an incorrect assumption about
  71         %i, I reached an incorrect conclusion about `cs', but the result
  72         worked correctly on the VT100 and ANSII terminals.  In Emacs
  73         version 17, both `cs' and %i work correctly.
  74
  75         The version 16 convention was to pass, for the second parameter,
  76         the line number of the first line beyond the end of the
  77         scroll region.
  78
  79 `cS'    set scroll region.  Differs from `cs' in taking parameters
  80         differently.  There are four parameters:
  81         1. Total number of lines on the screen.
  82         2. Number of lines above desired scroll region.
  83         3. Number of lines below (outside of) desired scroll region.
  84         4. Total number of lines on the screen, like #1.
  85         This is because an Ambassador needs the parameters like this.
  86
  87 `cr', `do', `le'
  88         Emacs will not attempt to use ^M, ^J or ^H for cursor motion
  89         unless these capabilities are present and say to use those
  90         characters.
  91
  92 `km'    Says the terminal has a Meta key.
  93
  94 Defining these strings is important for getting maximum performance
  95 from your terminal.
  96
  97 Make sure that the `ti' string sets all modes needed for editing
  98 in Emacs.  For example, if your terminal has a mode that controls
  99 wrap at the end of the line, you must decide whether to specify
 100 the `am' flag in the termcap entry; whichever you decide, the `ti'
 101 string should contain commands to set the mode that way.
 102 (Emacs also sends the `vs' string after the `ti' string.
 103 You can put the mode-setting commands in either one of them.)
 104
 105 *** Specific Terminal Types ***
 106
 107 Watch out for termcap entries for Ann Arbor Ambassadors that
 108 give too little padding for clear-screen.  7.2 msec per line is right.
 109 These are the strings whose padding you probably should change:
 110     :al=1*\E[L:dl=1*\E[M:cd=7.2*\E[J:cl=7.2*\E[H\E[J:
 111 I have sometimes seen `\E[2J' at the front of the `ti' string;
 112 this is a clear-screen, very slow, and it can cause you to get
 113 Control-s sent by the terminal at startup.  I recommend removing
 114 the `\E[2J' from the `ti' string.
 115 The `ti' or `vs' strings also usually need stuff added to them, such as
 116     \E[>33;52;54h\E[>30;37;38;39l
 117 You might want to add the following to the `te' or `ve' strings:
 118     \E[>52l\E[>37h
 119 The following additional capabilities will improve performance:
 120     :AL=1*\E[%dL:DL=1*\E[%dM:IC=4\E[%d@:DC=4\E[%dP:rp=1*%.\E[%a-c\001%db:
 121 If you find that the Meta key does not work, make sure that
 122     :km:
 123 is present in the termcap entry.
 124
 125 Watch out for termcap entries for VT100's that fail to specify
 126 the `sf' string, or that omit the padding needed for the `sf' and `sr'
 127 strings (2msec per line affected).  What you need is
 128     :sf=2*^J:sr=2*\EM:cs=\E[%i%d;%dr:
 129
 130 The Concept-100 and Concept-108 have many modes that `ti' strings
 131 often fail to initialize.  If you have problems on one of these
 132 terminals, that is probably the place to fix them.  These terminals
 133 can support an `rp' string.
 134
 135 Watch out on HP terminals for problems with standout disappearing on
 136 part of the mode line.  These problems are due to the absence of
 137 :sg#0: which some HP terminals need.
 138
 139 The vi55 is said to require `ip=2'.
 140
 141 The Sun console should have these capabilities for good performance.
 142            :AL=\E[%dL:DL=\E[%dM:IC=\E[%d@:DC=\E[%dP:
 143
 144 The vt220 needs to be set to vt220 mode, 7 bit, space parity
 145 in order to work fully with TERM=vt220.
 146
 147 If you are using a LAT terminal concentrator, you need to issue these
 148 commands to turn off flow control:
 149
 150     set port flow control disable
 151     define port flow control disable
 152
 153 On System V, in the terminfo database, various terminals may have
 154 the `xt' flag that should not have it.  `xt' should be present only
 155 for the Teleray 1061 or equivalent terminal.
 156
 157 In particular, System V for the 386 often has `xt' for terminal type
 158 AT386 or AT386-M, which is used for the console.  You should delete
 159 this flag.  Here is how:
 160
 161 You can get a copy of the terminfo "source" for at386 using the
 162 command: `infocmp at386 >at386.tic'.  Edit the file at386.tic and remove
 163 the `xt' flag.  Then compile the new entry with: `tic at386.tic'.
 164
 165 It is also reported that these terminal types sometimes have the wrong
 166 reverse-scroll string.  It should be \E[T, but sometimes is given as \E[S.
 167
 168 Here is what watserv1!maytag!focsys!larry recommends for these terminals:
 169
 170 # This copy of the terminfo description has been fixed.
 171 # The suggestions came from a number of usenet postings.
 172 #
 173 # Intel AT/386 for color card with monochrome display
 174 #
 175 AT386-M|at386-m|386AT-M|386at-m|at/386 console,
 176         am, bw, eo, xon,
 177         cols#80, lines#25,
 178         acsc=``a1fxgqh0jYk?lZm@nEooppqDrrsstCu4vAwBx3yyzz{{||}}~~,
 179         bel=^G, blink=\E[5m, bold=\E[1m, cbt=\E[Z,
 180         clear=\E[2J\E[H,
 181         cr=\r, cub=\E[%p1%dD, cub1=\E[D, cud=\E[%p1%dB,
 182         cud1=\E[B, cuf=\E[%p1%dC, cuf1=\E[C,
 183         cup=\E[%i%p1%02d;%p2%02dH, cuu=\E[%p1%dA, cuu1=\E[A,
 184         dch=\E[%p1%dP, dch1=\E[P, dl=\E[%p1%dM, dl1=\E[1M,
 185         ech=\E[%p1%dX,ed=\E[J, el=\E[K, el1=\E[1K\E[X, flash=^G, home=\E[H,
 186         hpa=\E[%i%p1%dG, ich=\E[%p1%d@, ich1=\E[1@, il=\E[%p1%dL, il1=\E[1L,
 187         ind=\E[S, indn=\E[%p1%dS, invis=\E[9m,
 188         is2=\E[0;10;38m, kbs=\b, kcbt=^], kclr=\E[2J,
 189         kcub1=\E[D, kcud1=\E[B, kcuf1=\E[C, kcuu1=\E[A,
 190         kdch1=\E[P, kend=\E[Y, kf1=\EOP, kf10=\EOY, kf11=\EOZ,
 191         kf12=\EOA, kf2=\EOQ, kf3=\EOR, kf4=\EOS, kf5=\EOT,
 192         kf6=\EOU, kf7=\EOV, kf8=\EOW, kf9=\EOX, khome=\E[H,
 193         kich1=\E[@, knp=\E[U, kpp=\E[V, krmir=\E0, rev=\E[7m, ri=\E[T,
 194         rin=\E[%p1%dT, rmacs=\E[10m, rmso=\E[m, rmul=\E[m,
 195         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,
 196         sgr0=\E[0;10m, smacs=\E[12m, smso=\E[7m, smul=\E[4m,
 197
 198 #
 199 # AT&T 386 color console
 200 #
 201 AT386|at386|386AT|386at|at/386 console,
 202         colors#8, ncv#3, pairs#64,
 203         is2=\E[0;10;39m,
 204         op=\E[0m,
 205         setb=\E[%?%p1%{0}%=%t40m
 206                 %e%p1%{1}%=%t44m
 207                 %e%p1%{2}%=%t42m
 208                 %e%p1%{3}%=%t46m
 209                 %e%p1%{4}%=%t41m
 210                 %e%p1%{5}%=%t45m
 211                 %e%p1%{6}%=%t43m
 212                 %e%p1%{7}%=%t47m%;,
 213         setf=\E[%?%p1%{0}%=%t30m
 214                 %e%p1%{1}%=%t34m
 215                 %e%p1%{2}%=%t32m
 216                 %e%p1%{3}%=%t36m
 217                 %e%p1%{4}%=%t31m
 218                 %e%p1%{5}%=%t35m
 219                 %e%p1%{6}%=%t33m
 220                 %e%p1%{6}%=%t33m
 221                 %e%p1%{7}%=%t37m%;,
 222         use=at386-m,
 223 #
 224 # Color console version that supports underline but maps blue
 225 # foreground color to cyan.
 226 #
 227 AT386-UL|at386-ul|386AT-UL|386at-ul|at/386 console,
 228         is2=\E[0;10;38m,
 229         use=at386,