Map CTRL-[ to CTRL-T, is it possible

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Map CTRL-[ to CTRL-T, is it possible

Pablo Giménez Pizarro
Hello, I would like to map CTRL-[ to do the same action as CTRL-T, or in other words
to go back one step in the tag stack, doing a :pop command.
It makes a lot of sense to me to use CTRL-] to go forward and CTRL-[ to go backwards
in the stack.

But for vim ESC and CTRL-[ seems to be the same keystroke and when I map  CTRL-[
it also affects the ESC key, so I can't get out from insert mode using it anymore.
Is there any way to accomplish this?
This is how I am mapping CTRL-[ now:

nnoremap <silent> <C-[>   <C-T>
vnoremap <silent> <C-[>   <C-T>
inoremap <silent> <C-[>   <C-T>

Thanks.
--
Un saludo
Best Regards
Pablo Giménez

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Re: Map CTRL-[ to CTRL-T, is it possible

Tony Mechelynck
On Sat, Aug 5, 2017 at 1:03 AM, Pablo Giménez <[hidden email]> wrote:

> Hello, I would like to map CTRL-[ to do the same action as CTRL-T, or in
> other words
> to go back one step in the tag stack, doing a :pop command.
> It makes a lot of sense to me to use CTRL-] to go forward and CTRL-[ to go
> backwards
> in the stack.
>
> But for vim ESC and CTRL-[ seems to be the same keystroke and when I map
> CTRL-[
> it also affects the ESC key, so I can't get out from insert mode using it
> anymore.
> Is there any way to accomplish this?
> This is how I am mapping CTRL-[ now:
>
> nnoremap <silent> <C-[>   <C-T>
> vnoremap <silent> <C-[>   <C-T>
> inoremap <silent> <C-[>   <C-T>
>
> Thanks.
> --
> Un saludo
> Best Regards
> Pablo Giménez

Yes, Vim inherits this ultimately from early ASCII teletypes, which
had no separate function keys, so Esc and Ctrl-[ are both seen as
0x1B. Similarly Backspace and Ctrl-H, Tab and Ctrl-I, Ctrl-(any letter
a-z) with or without Shift, etc.

This can just as well be seen as a feature: if your Esc key is too far
out of the way, you can use Ctrl-[ instead. But as you found out,
mapping either of them applies also to the other.


Best regards,
Tony.

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Re: Map CTRL-[ to CTRL-T, is it possible

Tony Mechelynck
On Sat, Aug 5, 2017 at 4:09 AM, Tony Mechelynck
<[hidden email]> wrote:

> On Sat, Aug 5, 2017 at 1:03 AM, Pablo Giménez <[hidden email]> wrote:
>> Hello, I would like to map CTRL-[ to do the same action as CTRL-T, or in
>> other words
>> to go back one step in the tag stack, doing a :pop command.
>> It makes a lot of sense to me to use CTRL-] to go forward and CTRL-[ to go
>> backwards
>> in the stack.
>>
>> But for vim ESC and CTRL-[ seems to be the same keystroke and when I map
>> CTRL-[
>> it also affects the ESC key, so I can't get out from insert mode using it
>> anymore.
>> Is there any way to accomplish this?
>> This is how I am mapping CTRL-[ now:
>>
>> nnoremap <silent> <C-[>   <C-T>
>> vnoremap <silent> <C-[>   <C-T>
>> inoremap <silent> <C-[>   <C-T>
>>
>> Thanks.
>> --
>> Un saludo
>> Best Regards
>> Pablo Giménez
>
> Yes, Vim inherits this ultimately from early ASCII teletypes, which
> had no separate function keys, so Esc and Ctrl-[ are both seen as
> 0x1B. Similarly Backspace and Ctrl-H, Tab and Ctrl-I, Ctrl-(any letter
> a-z) with or without Shift, etc.
>
> This can just as well be seen as a feature: if your Esc key is too far
> out of the way, you can use Ctrl-[ instead. But as you found out,
> mapping either of them applies also to the other.
>
>
> Best regards,
> Tony.

P.S. You can regain <Esc> function by mapping something else to it, e.g. with

        inoremap ² <Esc>

(assuming that, as on my keyboard, the key left of the 1 gives the
exponent-2) will let you get out of Insert mode by hitting that. Or
use for the {lhs} any key that suits your fancy and doesn't cfonflict
with something that you would use in Insert mode.

Best regards,
Tony.

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Re: Map CTRL-[ to CTRL-T, is it possible

Pablo Giménez Pizarro
Thanks Tony.
But I'm too used to use the Esc key to get out of Insert mode.
I will have to figure out another pair of keymaps to jumo between tags.
Cheers 

2017-08-05 3:16 GMT+01:00 Tony Mechelynck <[hidden email]>:
On Sat, Aug 5, 2017 at 4:09 AM, Tony Mechelynck
<[hidden email]> wrote:
> On Sat, Aug 5, 2017 at 1:03 AM, Pablo Giménez <[hidden email]> wrote:
>> Hello, I would like to map CTRL-[ to do the same action as CTRL-T, or in
>> other words
>> to go back one step in the tag stack, doing a :pop command.
>> It makes a lot of sense to me to use CTRL-] to go forward and CTRL-[ to go
>> backwards
>> in the stack.
>>
>> But for vim ESC and CTRL-[ seems to be the same keystroke and when I map
>> CTRL-[
>> it also affects the ESC key, so I can't get out from insert mode using it
>> anymore.
>> Is there any way to accomplish this?
>> This is how I am mapping CTRL-[ now:
>>
>> nnoremap <silent> <C-[>   <C-T>
>> vnoremap <silent> <C-[>   <C-T>
>> inoremap <silent> <C-[>   <C-T>
>>
>> Thanks.
>> --
>> Un saludo
>> Best Regards
>> Pablo Giménez
>
> Yes, Vim inherits this ultimately from early ASCII teletypes, which
> had no separate function keys, so Esc and Ctrl-[ are both seen as
> 0x1B. Similarly Backspace and Ctrl-H, Tab and Ctrl-I, Ctrl-(any letter
> a-z) with or without Shift, etc.
>
> This can just as well be seen as a feature: if your Esc key is too far
> out of the way, you can use Ctrl-[ instead. But as you found out,
> mapping either of them applies also to the other.
>
>
> Best regards,
> Tony.

P.S. You can regain <Esc> function by mapping something else to it, e.g. with

        inoremap ² <Esc>

(assuming that, as on my keyboard, the key left of the 1 gives the
exponent-2) will let you get out of Insert mode by hitting that. Or
use for the {lhs} any key that suits your fancy and doesn't cfonflict
with something that you would use in Insert mode.

Best regards,
Tony.

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--
Un saludo
Best Regards
Pablo Giménez

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