Problem with TM_SELECTED_TEXT.

[no-vici]

Dear LuaSnip enthusiasts,

I have the following snippet:

s("link_url", {
			t('<a href="'),
			f(function(args)
				return args[1].env.TM_SELECTED_TEXT[1] or {}  -- line 122
			end, {}),
			t('">'),
			i(1),
			t("</a>"),
			i(0),
		})

The syntax is very clear and should work as expected; however, when triggered, I got:

E5108: Error executing lua ~/.config/nvim/luasnippets/md.lua:122: attempt to index a nil value
stack traceback:                                                                                      
        ~/.config/nvim/luasnippets/md.lua:122: in function 'fn'
        .../packer/start/LuaSnip/lua/luasnip/nodes/functionNode.lua:47: in function 'update'
        .../pack/packer/start/LuaSnip/lua/luasnip/nodes/snippet.lua:876: in function 'update'
        .../pack/packer/start/LuaSnip/lua/luasnip/nodes/snippet.lua:567: in function 'trigger_expand'
        ...nvim/site/pack/packer/start/LuaSnip/lua/luasnip/init.lua:243: in function 'snip_expand'
        ...e/pack/packer/start/cmp_luasnip/lua/cmp_luasnip/init.lua:143: in function 'execute'
        .../nvim/site/pack/packer/start/nvim-cmp/lua/cmp/source.lua:399: in function 'execute'
        ...e/nvim/site/pack/packer/start/nvim-cmp/lua/cmp/entry.lua:475: in function 'execute'
        ...re/nvim/site/pack/packer/start/nvim-cmp/lua/cmp/core.lua:488: in function <...re/nvim/site/pack/packer/start/nvim-cmp/lua/cmp/core.lua:487>
        ...te/pack/packer/start/nvim-cmp/lua/cmp/utils/feedkeys.lua:47: in function <...te/pack/packer/start/nvim-cmp/lua/cmp/utils/feedkeys.lua:45>

I'm sure there must be something with cmp and cmp_luasnip, but I can't figure out where to dig into.

If you have any ideas, please share with me.

Thank you.

[L3MON4D3]

Oh, args is only the text contained in the arg-nodes, to get at the env-table, change to

f(args, parent) 
  return parent.snippet.env[TM_S...] or {}
end

Alternatively, I'd recommend lambda, it makes access to env-variables more readable (check doc for it, it's in extras)

[no-vici]

Alternatively, I'd recommend lambda, it makes access to env-variables more readable (check doc for it, it's in extras)

Wow, that works! You are my life saviour. I will try the suggested alternative.

Thank you so much.

[L3MON4D3]

You're very welcome :)