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

[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!

[Thorsten Jolitz]

Oleksandr Gavenko <gave...@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