Creating bindings for certain modes and certain states

[geo7]

It doesn't seem that theres anyway to have functionality like VIms after directory (or not an obvious one).

In vim, within ~/.vim/after/ftplugin/python.vim one could enter commands
which would only be active for python files.

" normal mode mapping
nnoremap gg dG
" insert mode mapping
inoremap j gg
" macros
let @s = "I'jfA'jfV:s: :', ':
,hlIsubprocess.call([jfA])jf"

Or whatever (probably something more sensible...)

Is there a way to get this behaviour from Evil / Spacemacs?

[syl20bnr]

This is called major-mode specific key bindings and they start with SPC m prefix or , which is a shortcut for it.

[syl20bnr]

For discoverability note that for now guide-key does not work with major-mode specific key bindings, you have to use SPC ? and enter SPC\ m to refine the search.
They should also be in the README file of the corresponding layer.

[geo7]

@syl20bnr can you be explicit or point me to the right docs for this please?

As I'm reading that I can't map keys in the same way, I'm forced to use , or SPC m as a prefix.

TBH, using , as a major mode leader isn't a nightmare, I'm just trying to work out how this actually works....

Could one define a normal mode mapping just for python mode that had pp mapped to gg, or something trivial like that as an example?

[syl20bnr]

First you can choose the keys for the leaders: https://github.com/syl20bnr/spacemacs/blob/develop/core/templates/.spacemacs.template#L81-L94

Then you can set bindings for a specific mode using its key binding map:
In this case it is for C#

(evil-define-key 'normal omnisharp-mode-map (kbd "g R") 'omnisharp-rename)

Fore more info look at the code in spacemacs with SPC f e h and SPC /, this is the best source of example.

[geo7]

This doesn't load for me @syl20bnr :

https://github.com/syl20bnr/spacemacs/blob/develop/elpa/omnisharp-20150505.1234/example-config-for-evil-mode.el#L11

---

(evil-define-key 'normal omnisharp-mode-map (kbd "g R") 'omnisharp-rename)

This example maps gR to omnisharp-rename in omnisharp-mode

so for python one would use

(evil-define-key 'normal python-mode-map (kbd "g R") 'python-check)

Not sure what python-check does, just for example

---

Thanks for the guidence though, I'll go through them

[syl20bnr]

This is because the map is not yet available, you have to defer the define with

(eval-after-load 'omnisharp
  `(evil-define-key 'normal omnisharp-mode-map (kbd "g R") 'omnisharp-rename))

With several expression you have to use a progn:

(eval-after-load 'omnisharp
  `(progn
      (evil-define-key 'normal omnisharp-mode-map (kbd "g R") 'omnisharp-rename)
      (evil-define-key 'normal omnisharp-mode-map (kbd "g R") 'omnisharp-rename)))

[geo7]

when i said it didn't load I was referring to the hyperlink, I just got a 404 message from that.

---

I'm not finding this obvious from reading the .spacemacs file

[syl20bnr]

I forgot to remove the link :-)
You've got the idea now so you should be good to go.
For the leader keys we need a better documentation, right now it is documented but at different places.

[geo7]

Oh right no worries :)

Yeah, I can have a play with what's here thanks

And yes I agree - I proposed here #1735 (comment) that there was a walk through of a basic .vimrc to .spacemacs conversion made. I think this would be really useful and cover many questions around this kind of thing. I know person808 has made a migration guide, perhaps integrating it to that would be the most appropriate place for it, or stand alone idk.

cheers though :)