Custom query, always getting 'start' is higher than 'end' error

[bew]

Hello o/

I'm trying to make a custom query to have the source = ... line in my context, to know the name of the plugin I'm currently scrolling through.
For example the code & TS looks like this:

(You can find an example copy/pastable snippet at https://github.com/bew/dotfiles/blob/c210773d11f41cb8ed3/nvim/lua/mycfg/plugs/for_treesitter.lua#L38)

I want the end result to look like:

Plug {
  source = gh"Wansmer/treesj",
  on_load = function()
--------------------------------------------------------------------------
  -- And I'm currently here in `on_load` function

I tried to make the following query (in a ;; extend file):

 (function_call
   name: (identifier) @_maybe_plug
   arguments: (arguments
     (table_constructor
       . ; first field
       (field
         name: (identifier) @_maybe_source @context.start
       )
     )
   )
   (#eq? @_maybe_plug "Plug")
   (#eq? @_maybe_source "source")
 ) @context

Where I specify @context to span the same way as the function call, and @context.start to mark that it's the source .. line that should be visible in the context window.
But I'm always getting error like `start` is higher than `end` from the nvim_buf_get_text call in the plugin.
👉 I don't really understand this error and what to do about it..
And I tried to use @context.end but I'm not sure where to put it..

NOTE: I kinda managed at some point to get the source line in the context but at the wrong position (I don't remember how I did it now), and it's definitely not what I want anyway..:

  source = gh"Wansmer/treesj",
Plug {
  on_load = function()
--------------------------------------------------------------------------
  -- And I'm currently here in `on_load` function

Also, I didn't find documentation for @context.start nor @context.final that I see being used in context.scm files 🤔

Can someone help me?
Thanks 🙏

[TheLeoP]

Also, I didn't find documentation for @context.start nor @context.final that I see being used in context.scm files 🤔

Through trial and error I've found that:

• @context.start overrides the start position of the context
• @context.end overrides the end position of the context in an end-exclusive way
• @context.final overrides the end position of the context in an end-inclusive way

So, for the example code

Plug({
	source = gh("foo/bar"),
	desc = "foo bar",
	tags = { t.foo },
	on_load = function()
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
		print("foo")
	end,
})

the query

;extends

(function_call
  name: (identifier) @_identifier
  arguments: (arguments
    (table_constructor
      (field
        name: (identifier) @_maybe_source) @context.start
      (_) @context.final))
  (#eq? @_identifier Plug)
  (#eq? @_maybe_source source)) @context

will show the context

	source = gh("foo/bar"),
	desc = "foo bar",
------------------------------------------------

the query

(function_call
  name: (identifier) @_identifier
  arguments: (arguments
    (table_constructor
      (field
        name: (identifier) @_maybe_source)
      (_) @context.final))
  (#eq? @_identifier Plug)
  (#eq? @_maybe_source source)) @context

will show the context

Plug({
	source = gh("foo/bar"),
	desc = "foo bar",
------------------------------------------------

and the query

(function_call
  name: (identifier) @_identifier
  arguments: (arguments
    (table_constructor
      (field
        name: (identifier) @_maybe_source)
      (_) @context.end))
  (#eq? @_identifier Plug)
  (#eq? @_maybe_source source)) @context

will show the context

Plug({
	source = gh("foo/bar"),
------------------------------------------------

But, there's another issue (at least on my testing). To get these results I had to manually remove the lua/context.scm queries bundled with nvim-treesitter-context because the table_constructor and the function_definition context queries where overriding my custom query. Even when removing the ;extends directive (which, as far as I understand should make my custom query override the queries bundled with nvim-treesitter-context)

[bew]

Thanks for trying to help here, but in the end I really didn't find how to make it work 😢