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feat(treesitter): add @injection.filename

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Problem: Injecting languages for file redirects (e.g., in bash) is not
possible.

Solution: Add `@injection.filename` capture that is piped through
`vim.filetype.match({ filename = node_text })`; the resulting filetype
(if not `nil`) is then resolved as a language (either directly or
through the list maintained via `vim.treesitter.language.register()`).

Note: `@injection.filename` is a non-standard capture introduced by
Helix; having two editors implement it makes it likely to be upstreamed.
This commit is contained in:
Christian Clason
2024-04-02 10:54:40 +02:00
parent b3f9da9524
commit 6cfca21bac
3 changed files with 11 additions and 0 deletions
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4
runtime/lua/vim/treesitter/languagetree.lua
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@ -809,6 +809,10 @@ function LanguageTree:_get_injection(match, metadata)
if name == 'injection.language' then
local text = vim.treesitter.get_node_text(node, self._source, { metadata = metadata[id] })
lang = resolve_lang(text)
elseif name == 'injection.filename' then
local text = vim.treesitter.get_node_text(node, self._source, { metadata = metadata[id] })
local ft = vim.filetype.match({ filename = text })
lang = ft and resolve_lang(ft)
elseif name == 'injection.content' then
ranges = get_node_ranges(node, self._source, metadata[id], include_children)
end