Re: Ctrl+4 means SIGQUIT+coredump, where is this documented, what more shortcuts are there?

On 10/31/18 2:15 PM, Christian Weisgerber wrote:
> On 2018-10-31, Stuart Henderson <stu@spacehopper.org> wrote:
>
>> No idea how ^4 is mapped to ^\, but for some reason it is,
>
> This goes back to the VT220, if not older terminals. Ctrl-3 for
> ESC aka ^[ is particularly handy if the Esc key is in some inconvenient
> place as on most PC keyboards.
>
> See "Table 3-5 Keys Used to Generate 7-Bit Control Characters" in
> the VT220 Programmer Reference Manual:
> https://vt100.net/docs/vt220-rm/table3-5.html
>

Looks like this is implemented by the different terminal emulators so it varies. For vte
(gnome-terminal, terminator, ...), it looks like this is the code that sets up this behavior:

https://github.com/GNOME/vte/blob/master/src/keymap.cc#L146

- Aner