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authorChristian Clason <c.clason@uni-graz.at>2024-04-02 10:54:40 +0200
committerChristian Clason <c.clason@uni-graz.at>2024-04-02 11:13:16 +0200
commit6cfca21bac6bb39b50cba1c23ffb2b69e2d94df8 (patch)
treefdc50912d6e1a84afecb4e8c9b7e0d0104ad8114
parentb3f9da9524b0b1bb992d3dd84eaa92980923cb3e (diff)
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feat(treesitter): add `@injection.filename`
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.
-rw-r--r--runtime/doc/news.txt3
-rw-r--r--runtime/doc/treesitter.txt4
-rw-r--r--runtime/lua/vim/treesitter/languagetree.lua4
3 files changed, 11 insertions, 0 deletions
diff --git a/runtime/doc/news.txt b/runtime/doc/news.txt
index e39cf95da9..5aa274637b 100644
--- a/runtime/doc/news.txt
+++ b/runtime/doc/news.txt
@@ -240,6 +240,9 @@ The following new APIs and features were added.
language aliases (e.g., filetype or custom shorthands) registered via
|vim.treesitter.language.register()| and/or attempt lower case variants of
the text.
+ • `@injection.filename` will try to match the node text via
+ |vim.filetype.match()| and treat the result as a language name in the same
+ way as `@injection.language`.
• The `#set!` directive now supports `injection.self` and `injection.parent`
for injecting either the current node's language or the parent
|LanguageTree|'s language, respectively.
diff --git a/runtime/doc/treesitter.txt b/runtime/doc/treesitter.txt
index 0d5511ac40..2356a0c235 100644
--- a/runtime/doc/treesitter.txt
+++ b/runtime/doc/treesitter.txt
@@ -654,6 +654,10 @@ parent tree. The language injection query allows you to specify these
• `@injection.language` - indicates that the captured node’s text may
contain the name of a language that should be used to re-parse the
`@injection.content`.
+ • `@injection.filename` - indicates that the captured node’s text may
+ contain a filename; the corresponding filetype is then looked-up up via
+ |vim.filetype.match()| and treated as the name of a language that should
+ be used to re-parse the `@injection.content`.
The language injection behavior can also be configured by some properties
associated with patterns:
diff --git a/runtime/lua/vim/treesitter/languagetree.lua b/runtime/lua/vim/treesitter/languagetree.lua
index 3b5d8953c9..8f65cb57c3 100644
--- a/runtime/lua/vim/treesitter/languagetree.lua
+++ b/runtime/lua/vim/treesitter/languagetree.lua
@@ -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