On Jan 10, 2008 8:51 PM, Peter Dyballa <
Peter_Dyballa@web.de> wrote: > > Am 09.01.2008 um 10:48 schrieb Forrest: > > > > i tried to figure out why, then i googled much but got little > > helpful, it > > seems that `terminfo' is the point but i cannot understand what it
> > is, the > > output of 'infocmp' is a mess for me :( > > It's not that. It's ASCII: > > C-@ -> \000 or NUL > C-a -> \001 > C-b -> \002
> ... > C-z -> \032 > C-[ -> \033 > C-\ -> \034 > C-] -> \035 > C-^ -> \036 > C-_ -> \037 > SPC -> \040
> > This has nothing to do with terminfo. The latter is for drawing and > moving the cursor on an alpha-numeric text screen. > > -- > Greetings > > Pete > > It isn't pollution that's harming the environment. It's the
> impurities in our air and water that are doing it. > > > >
Thank you very much Pete! I think I've got it.
1. It's the keyboard driver that ignores key-combinations like `C-,'
(mentioned by Andreas). When I press `C-,', the keyboard driver
received it and does nothing, so the terminal doesn't even know I've
press keys. That's why emacs cannot accept `C-,' ---- emacs doesn't even
know the key-press action!
2. The keyboard driver gives an ASCII code to any `Ctrl-' thing it
thinks reasonable. The code is actually "stolen" from the ASCII table.
Because the Char 0~32 will never be generated by a keyboard, they can be
used for any purpose the driver wants. That's why Pete and Nick asked
me to see `man ascii'. 3. When a key like F1~F12 or HOME, END are pressed, a key sequence begins with a ESC(27) will be passed to the terminal, and probably be passed on to emacs.
4. I guess that the keyboard driver used in an X is different with that
used in a console. The former passed each key-press to a program, but
not ignore combinations like `C-,'. Thus emacs in an X can receive
every press of mine.
Again, a lot of thanks to Pete, and Nick, and Andreas, and everyone who
helped me in this question. I just reviewed all the messages I
received. I didn't understand what I've read because I took it for granted that the keyboard driver will pass everything to the terminal.