How to enable yasnippets for all modes?

Question

Company doesn't show snippets in some modes e.g. python or sh. Yet yas/describe-tables displays all snippets. In other modes e.g. org,emacs-lisp, snippets are shown as expected.

Looking at company-diag I don't see company-yasnippets loaded anywhere in python-mode.

Used backend: company-capf

While in the working org mode it returns

Used backend: (company-capf :with company-yasnippet)

Testing this variable (as proposed in spacemac docu) didn't change anything:

spacemacs-default-company-backends '(company-yasnippet)

---

Environment:

yas-snippet-dirs:

("/home/user/.emacs.d/private/snippets/" yasnippet-snippets-dir)

yas-global-mode t

 (auto-completion :variables
                  auto-completion-enable-snippets-in-popup t
                  auto-completion-enable-help-tooltip t)
 (python :variables
         python-backend 'lsp
         python-lsp-server 'pyright
         python-test-runner 'pytest
         python-enable-yapf-format-on-save t
         )

Where should I start looking?

---

Update:

Custom created snippets e.g. /private/snippets/python-mode/foo.snippet appear in a second list. In a different color and out-of-line position. It looks like multiple completion systems are interfering.

Gif: Python after enabling auto-complete-mode alongside company-mode

Gif: Expected behavior (as in org mode and company-mode only):

Answer 1

Remove the extension .snippet from the name of any new snippet created . No snippets have such extension.

Assuming you have some python snippets, take into account the execution order - if your python mode is enabled after yasnippets-snippets package, then at the end of your python configuration add the expression (yas-reload-all) to reload all snippets.

Answer 2

[Solved] Auto-completion support

Disclaimer: The configuration and setup mentioned in this guide are specific to Spacemacs only. The instructions provided may not be applicable or compatible with other Emacs setups or configurations.

I have finally been able to use all sorts of completions in spacemacs. I have tried several combinations and finally, I got it. So I put this one here in case anyone stumbled into this dilemma.

Yasnippet Auto-completion

The back-end of yasnippet is company-yasnippet and you can add it to your spacemacs using. There are two ways to make it works (choose only one of these two, I used the second option)

1. At your dotspacemacs-configuration-layers add

     (auto-completion :variables
                      auto-completion-enable-snippets-in-popup t
                      auto-completion-enable-help-tooltip t
                      auto-completion-return-key-behavior 'complete
                      auto-completion-tab-key-behavior 'cycle ;;'complete 'cycle
                      auto-completion-enable-sort-by-usage t
                      auto-completion-idle-delay 0.0)
                      :config
                      add-to-list 'company-backends '(company-yasnippet  company-lsp company-capf company-anaconda))

2. You can add to dotspacemacs/user-config the following

  ;; -------------------------------------------------------------
  ;;            Auto-completion - Back End Support
  ;; -------------------------------------------------------------
  (require 'company-yasnippet)
    (add-to-list 'company-backends '(company-yasnippet company-lsp company-capf company-anaconda))

[Optional][bonus] Tabnine Auto-completion support

I like also to add company-tabnine to my back-ends completions. Here is how I did it.

1. Ensure you already installed the tabnine in dotspacemacs-additional-packages as:

   dotspacemacs-additional-packages '(
                (company-tabnine) ;; for using tab-nine AI auto-assistance
)

2. Put in your dotspacemacs/user-config (similar to before)

  ;; -------------------------------------------------------------
  ;;            Auto-completion - Back End Support
  ;; -------------------------------------------------------------
  (require 'company-yasnippet)
  (require 'company-tabnine)
  (add-to-list 'company-backends '(company-yasnippet company-tabnine company-lsp company-capf company-anaconda))

3. Install tabnine binary using M-x: company-tabnine-install-binary ( twice in spacemacs then write this command). It will be installed in your home directory (e.g. for my machine M1 macOS, it will be downloaded here ~/.TabNine/4.4.321/aarch64-apple-darwin. Make sure it is executable by running the command below in this directory (read more here).

chmod +x ~/.TabNine/4.4.321/aarch64-apple-darwin/*

It works now as you can see

NOTE:

• [I think] changing the order of the company backends in the company-backends list will affect their order in the popup menu. Make sure to set auto-completion-enable-snippets-in-popup t (read more here)

• To investigate your back-end company support, you can use <space-space> and type (M-x: describe-variable) then search for company-backends and you will see a doc popup showing all back-ends supported. For me they are

Value:
((company-capf company-dabbrev-code . #1=(:with company-yasnippet))
 (company-semantic company-dabbrev-code company-gtags company-etags company-keywords . #1#)
 (company-files . #1#)
 (company-dabbrev . #1#))
Original value was 
(company-bbdb company-semantic company-cmake company-capf company-clang company-files
              (company-dabbrev-code company-gtags company-etags company-keywords)
              company-oddmuse company-dabbrev)
Local in buffer .spacemacs; global value is 
((company-yasnippet company-tabnine company-lsp company-capf company-anaconda)
 company-bbdb company-semantic company-cmake company-capf company-clang company-files
 (company-dabbrev-code company-gtags company-etags company-keywords)
 company-oddmuse company-dabbrev)