Unwanted keybinding translation

Unwanted keybinding translation

[Thorsten Jolitz]

Hi List, 

I have the following in my .emacs (since the C-M-v keybinding does not
work on the console in my case): 

  ,---------------------------------------------------------
  | ; global key for scroll up a window
  | (global-set-key (kbd "C-v") 'scroll-up-command)
  | 
  | ; global key for scroll down a window
  | (global-set-key (kbd "M-v") 'scroll-down-command)
  | 
  | ; global key for scroll up other window
  | (global-set-key (kbd "C-S-v") 'scroll-other-window)
  | 
  | ; global key for scroll down other window
  | (global-set-key (kbd "M-S-v") 'scroll-other-window-down)
  `---------------------------------------------------------

(I know that C-v and M-v are the defaults, but if I don't redefine theme
here things don't work out at all)

When I do C-h k 'M-V' I get:

,----------------------------------------------------------------------
| M-v (translated from M-V) runs the command scroll-down-command, which
| is an interactive compiled Lisp function in `window.el'.
| 
| It is bound to <prior>, M-v.
`----------------------------------------------------------------------

while doing C-h k 'C-V' I get, as expected:

,--------------------------------------------------------------------
| C-S-v runs the command scroll-other-window, which is an interactive
| built-in function in `C source code'.
| 
| It is bound to C-S-v, <M-next>, C-M-v, ESC <next>.
`--------------------------------------------------------------------


Why is that so? Is that more or less a random thing if uppercase and
lowercase keybindings are respected?

-- 
cheers,
Thorsten

Re: Unwanted keybinding translation

[Oleksandr Gavenko]

On 2012-09-01, Thorsten Jolitz wrote:

> I have the following in my .emacs (since the C-M-v keybinding does not
> work on the console in my case): 
>
To debug key sequence translation in console use Expect script:

  https://sourceforge.net/u/gavenkoa/utils/ci/tip/tree/misc/keyseq.exp?format=raw

or such C program:

  #include <stdlib.h>
  #include <stdio.h>

  int main()
  {
      int ch;
      while ((ch = getchar()) != EOF) {
          if (ch == 27) {
              puts("key: \\e");
          } else if (ch <= 26) {
              printf("hex: ox%02x, key: \\C-%c\n", ch, ch+64);
          } else {
              printf("hex: ox%02x, key: %c\n", ch, ch);
          }
      }
      return EXIT_SUCCESS;
  }

You can switch terminal in raw mode before run C program:

  $ stty raw

or press RET after.

-- 
Best regards!

Re: Unwanted keybinding translation

[Thorsten Jolitz]

Oleksandr Gavenko <gavenkoa@gmail.com> writes:

> On 2012-09-01, Thorsten Jolitz wrote:
>
>> I have the following in my .emacs (since the C-M-v keybinding does not
>> work on the console in my case): 
>>
> To debug key sequence translation in console use Expect script:
>
>https://sourceforge.net/u/gavenkoa/utils/ci/tip/tree/misc/keyseq.exp?format=raw
>
> or such C program:

Thanks, I downloaded the script, looks quite useful, have to try it out. 

-- 
cheers,
Thorsten