Snippets are not reloaded after adding a new snippet

Question

Snippets are not reloaded after adding a new snippet

smjonas opened this issue 3 years ago · 8 comments

I noticed this autocommand in plugin/cmp_luasnip.lua:

autocmd User LuasnipSnippetsAdded lua require'cmp_luasnip'.refresh()

So I assumed that this causes snippets to be automatically reloaded once I add a new snippet. However, that doesn't seem to be the case.

The help docs for luasnip show this:

After snippets were lazy-loaded, the User LuasnipSnippetsAdded-event will be triggered.

There is no mention of this event being called when the snippet definitions change.

So I don't think this autocommand works as intended.

I am not even sure how to achieve this since Lua caches all modules so maybe luasnip would need to be reloaded somehow.

Answer 1 · 2021-12-17T13:43:56.000Z

Have you tried doing doautocmd User LuasnipSnippetsAdded after adding your snippets? It should happen automatically for snippets loaded via "luasnip.loaders.from_{vscode,snipmate}".load, but adding snippets to the table manually doesn't trigger the event.

Answer 2 · 2021-12-17T14:05:51.000Z

Thanks for the suggestion, I tried that but then require("luasnip.session").latest_load_ft seems to be nil and causes this error:

Error detected while processing User Autocommands for "LuasnipSnippetsAdded":
E5108: Error executing lua ...ite/pack/packer/opt/cmp_luasnip/lua/cmp_luasnip/init.lua:29: table index is
nil
stack traceback:
        ...ite/pack/packer/opt/cmp_luasnip/lua/cmp_luasnip/init.lua:29: in function 'refresh'
        [string ":lua"]:1: in main chunk

Answer 3 · 2021-12-17T16:33:08.000Z

Ahh right, forgot about that. I added a function, "luasnip".refresh_notify(filetype) to trigger that autocmd correctly.

Answer 4 · 2021-12-17T17:27:27.000Z

Thanks for your fast response! Unfortunately, I still get the same error even after upgrading Luasnip when running :doautocmd User LuasnipSnippetsAdded.

Answer 5 · 2021-12-17T17:42:28.000Z

Are you calling doautocmd or the refresh_notify? :D

Answer 6 · 2021-12-17T18:36:07.000Z

Ohh at first I was using doautocmd but :lua require("luasnip").refresh_notify("lua") does nothing. Are you sure it is possible with that command since I don't think Lua will automagically reload my module with the snippet definitions :D? My snippets are in a plugins/luasnip.lua module so I tried :lua package.loadedp["plugins.loaded"] = nil, then reloading it with packer but this also didn't work.

Answer 7 · 2021-12-17T18:50:16.000Z

Ohh, no, that we can't do. The refresh_notify only tells cmp_luasnip (or other plugins) that snippets were added.
You could register an autocommand that :luafiles plugins/luasnip.lua to reload your snippets, but that working also depends on what you do in there (won't work if you also load() snippets).
I recommend checking out this, it's a pretty nice setup that also has reload-capability.

Answer 8 · 2021-12-17T19:01:35.000Z

Alright, thanks for these tips, I will check out the link! I guess, I was just used to it from UltiSnips, but there it's easier to reload snippets on file save since a special filetype is used.