aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorEric S. Raymond1993-03-18 22:31:30 +0000
committerEric S. Raymond1993-03-18 22:31:30 +0000
commit9789a4beb3a652523587ab1f86d49ea138f7856a (patch)
tree45816a9a91336ad74347102b7da38dfd40b1d1f6
parentb129bbdc601d2836bf0fbed034d8a7ca7c4a1171 (diff)
downloademacs-9789a4beb3a652523587ab1f86d49ea138f7856a.tar.gz
emacs-9789a4beb3a652523587ab1f86d49ea138f7856a.zip
Initial revision
-rw-r--r--etc/TO-DO26
-rw-r--r--lisp/term/README207
2 files changed, 233 insertions, 0 deletions
diff --git a/etc/TO-DO b/etc/TO-DO
new file mode 100644
index 00000000000..cc5b398eeca
--- /dev/null
+++ b/etc/TO-DO
@@ -0,0 +1,26 @@
1Things useful to do for GNU Emacs:
2
3* Primitive for random access insertion of part of a file.
4
5* Making I/O streams for files, so that read and prin1 can
6 be used on files directly. The I/O stream itself would
7 serve as a function to read or write one character.
8
9* If a file you can't write is in a directory you can write,
10 make sure it works to modify and save this file.
11
12* Make dired's commands handle correctly the case where
13 ls has listed several subdirectories' contents.
14 It needs to be able to tell which directory each file
15 is really in, by searching backward for the line
16 which identifies the start of a directory.
17
18* Add more dired commands, such as sorting (use the
19 sort utility through call-process-region).
20
21* Make display.c record inverse-video-ness on
22 a character by character basis. Then make non-full-screen-width
23 mode lines inverse video, and display the marked location in
24 inverse video.
25
26* VMS code to list a file directory. Make dired work.
diff --git a/lisp/term/README b/lisp/term/README
new file mode 100644
index 00000000000..f31986adcfa
--- /dev/null
+++ b/lisp/term/README
@@ -0,0 +1,207 @@
1 This directory contains files of elisp that customize Emacs for certain
2terminal types. When Emacs starts, it checks the TERM environment variable to
3see what type of terminal the user is running on, checks for an elisp file
4named "term/${TERM}.el", and if one exists, loads it.
5
6 When writing terminal packages, there are some things it is good to keep in
7mind.
8
9 First, about keycap names. Your terminal package can create any keycap
10cookies it likes, but there are good reasons to stick to the set recognized by
11the X-windows code whenever possible. The X key symbols recognized by Emacs
12are listed in src/term.c; look for the string `keys' in that file.
13
14 For one thing, it means that you'll have the same Emacs key bindings on in
15terminal mode as on an X console. If there are differences, you can bet
16they'll frustrate you after you've forgotten about them.
17
18 For another, the X keysms provide a standard set of names that Emacs knows
19about. It tries to bind many of them to useful things at startup, before your
20.emacs is read (so you can override them). In some ways, the X keysym standard
21is a admittedly poor one; it's incomplete, and not well matched to the set of
22`virtual keys' that UNIX terminfo(3) provides. But, trust us, the alternatives
23were worse.
24
25 This doesn't mean that if your terminal has a "Cokebottle" key you shouldn't
26define a [cokebottle] keycap. But if you must define cookies that aren't in
27that set, try to pattern them on the standard terminfo variable names for
28clarity; also, for a fighting chance that your binding may be useful to someone
29else someday.
30
31 For example, if your terminal has a `find' key, observe that terminfo
32supports a key_find capability and call your cookie [key-find].
33
34Here is a complete list, with corresponding X keysyms.
35
36-----------------------------------------------------------------------------
37Variable name cap X Keysym Description
38-------------- --- ------------ -------------------------------------
39key_down kd down Sent by terminal down arrow key
40key_up ku up Sent by terminal up arrow key
41key_left kl left Sent by terminal left arrow key
42key_right kr right Sent by terminal right arrow key
43key_home kh home Sent by home key.
44key_backspace kb Sent by backspace key
45key_dl kd deleteline Sent by delete line key.
46key_il kA insertline Sent by insert line.
47key_dc kD Sent by delete character key.
48key_ic kI insertchar (1) Sent by ins char/enter ins mode key.
49key_eic KM Sent by rmir or smir in insert mode.
50key_clear kC Sent by clear screen or erase key.
51key_eos kS Sent by clear-to-end-of-screen key.
52key_eol kE Sent by clear-to-end-of-line key.
53key_sf kF Sent by scroll-forward/down key
54key_sr kR Sent by scroll-backward/up key
55key_npage kN next (2) Sent by next-page key
56key_ppage kP prior (2) Sent by previous-page key
57key_stab kT Sent by set-tab key
58key_ctab kt Sent by clear-tab key
59key_catab ka Sent by clear-all-tabs key.
60key_enter @8 kp-enter Enter/send (unreliable)
61key_print %9 print print or copy
62key_ll kH Sent by home-down key
63key_a1 K1 kp-1 Upper left of keypad
64key_a3 K3 kp-3 Upper right of keypad
65key_b2 K2 kp-5 Center of keypad
66key_c1 K4 kp-7 Lower left of keypad
67key_c3 K5 kp-9 Lower right of keypad
68key_btab kB backtab Back tab key
69key_beg @1 begin beg(inning) key
70key_cancel @2 cancel cancel key
71key_close @3 close key
72key_command @4 execute (3) cmd (command) key
73key_copy @5 copy key
74key_create @6 create key
75key_end @7 end end key
76key_exit @9 exit key
77key_find @0 find key
78key_help %1 help key
79key_mark %2 mark key
80key_message %3 message key
81key_move %4 move key
82key_next %5 next (2) next object key
83key_open %6 open key
84key_options %7 menu (3) options key
85key_previous %8 previous (2) previous object key
86key_redo %0 redo redo key
87key_reference &1 ref(erence) key
88key_refresh &2 refresh key
89key_replace &3 replace key
90key_restart &4 reset (3) restart key
91key_resume &5 resume key
92key_save &6 save key
93key_sbeg &9 shifted beginning key
94key_select *6 select select key
95key_suspend &7 suspend key
96key_undo &8 undo undo key
97
98key_scancel &0 shifted cancel key
99key_scommand *1 shifted command key
100key_scopy *2 shifted copy key
101key_screate *3 shifted create key
102key_sdc *4 shifted delete char key
103key_sdl *5 shifted delete line key
104key_send *7 shifted end key
105key_seol *8 shifted clear line key
106key_sexit *9 shifted exit key
107key_sf kF shifted find key
108key_shelp #1 shifted help key
109key_shome #2 shifted home key
110key_sic #3 shifted input key
111key_sleft #4 shifted left arrow key
112key_smessage %a shifted message key
113key_smove %b shifted move key
114key_snext %c shifted next key
115key_soptions %d shifted options key
116key_sprevious %e shifted prev key
117key_sprint %f shifted print key
118key_sredo %g shifted redo key
119key_sreplace %h shifted replace key
120key_sright %i shifted right arrow
121key_sresume %j shifted resume key
122key_ssave !1 shifted save key
123key_suspend !2 shifted suspend key
124key_sundo !3 shifted undo key
125
126key_f0 k0 f0 (4) function key 0
127key_f1 k1 f1 function key 1
128key_f2 k2 f2 function key 2
129key_f3 k3 f3 function key 3
130key_f4 k4 f4 function key 4
131key_f5 k5 f5 function key 5
132key_f6 k6 f6 function key 6
133key_f7 k7 f7 function key 7
134key_f8 k8 f8 function key 8
135key_f9 k9 f9 function key 9
136key_f10 k; f10 (4) function key 10
137key_f11 F1 f11 function key 11
138 : : : :
139key_f35 FP f35 function key 35
140key_f36 FQ function key 36
141 : : : :
142key_f64 k1 function key 64
143
144(1) The terminfo documentation says this may be the 'insert character' or
145 `enter insert mode' key. Accordingly, key_ic is mapped to the `insertchar'
146 keysym if there is also a key_dc key; otherwise it's mapped to `insert'.
147 The presumption is that keyboards with `insert character' keys usually
148 have `delete character' keys paired with them.
149
150(2) If there is no key_next key but there is a key_npage key, key_npage
151 will be bound to the `next' keysym. If there is no key_previous key but
152 there is a key_ppage key, key_ppage will be bound to the `previous' keysym.
153
154(3) Sorry, these are not exact but they're the best we can do.
155
156(4) The uses of the "k0" capability are inconsistent; sometimes it
157 describes F10, whereas othertimes it describes F0 and "k;" describes F10.
158 Emacs attempts to politely accomodate both systems by testing for
159 "k;", and if it is present, assuming that "k0" denotes F0, otherwise F10.
160-----------------------------------------------------------------------------
161
162 The following X keysyms do *not* have terminfo equivalents. These are
163the cookies your terminal package will have to set up itself, if you want them:
164
165 break
166 system
167 user
168 kp-backtab
169 kp-space
170 kp-tab
171 kp-f1
172 kp-f2
173 kp-f3
174 kp-f4
175 kp-multiply
176 kp-add
177 kp-separator
178 kp-subtract
179 kp-decimal
180 kp-divide
181 kp-0
182 kp-2
183 kp-4
184 kp-6
185 kp-8
186 kp-equal
187
188 In general, you should not bind any of the standard keysym names to
189functions in a terminal package. There's code in loaddefs.el that does that;
190the less people make exceptions to that, the more consistent an interface Emacs
191will have across different keyboards. Those exceptions should go in your
192.emacs file.
193
194 Finally, if you're using a USL UNIX or a Sun box or anything else with the
195USL version of curses(3) on it, bear in mind that the original curses(3) had
196(and still has) a very much smaller set of keycaps. In fact, the reliable
197ones were just the arrow keys and the first ten function keys. If you care
198about making your package portable to older Berkeley machines, don't count on
199the setup code to bind anything else.
200
201 If your terminal's arrow key sequences are so funky that they conflict with
202normal Emacs key bindings, the package should set up a function called
203(enable-foo-arrow-keys), where `foo' becomes the terminal name, and leave
204it up to the user's .emacs file whether to call it.
205
206 Before writing a terminal-support package, it's a good idea to read the
207existing ones and learn the common conventions.