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# Queries (`vim.treesitter.queries`)
Queries allow you to change Neovim's behavior based on Tree-sitter.\
Read more about it in the
[neovim docs](https://neovim.io/doc/user/treesitter/#_treesitter-queries).
**Example:**
In the following example, we are creating a custom injection, to highlight the
Lua string after `mkLuaInline`.
```nix
let
inherit (lib.generators) mkLuaInline;
in {
foo = mkLuaInline ''
function bar()
return 'foobar'
end
'';
}
```
```nix
{
vim.treesitter.queries = [{
type = "injections";
filetypes = ["nix"];
loadtype = "extends";
query = ''
(apply_expression
function: (variable_expression
name: (identifier) @_func
(#eq? @_func "mkLuaInline"))
argument: (indented_string_expression
(string_fragment) @injection.content)
(#set! injection.language "lua")
(#set! injection.combined))
'';
}];
}
```
This will generate a `queries/nix/injections.scm` in a Neovim runtime directory.
> [!NOTE]
> When multiple queries match the same `filetype` and `type`, they are merged.
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