Select subtree within injections in :tree-sitter-subtree (#9309)

`:tree-sitter-subtree` could previously only print subtrees of nodes
in the root injection layer. We can improve on that by finding the layer
that contains the given byte range and printing the subtree within that
layer. That gives more useful results when a selection is within an
injection layer.

1 files changed, 1 insertions, 5 deletions

diff --git a/helix-term/src/commands/typed.rs b/helix-term/src/commands/typed.rs
index f1c3cb71..b13af03a 100644
--- a/helix-term/src/commands/typed.rs
+++ b/helix-term/src/commands/typed.rs
@@ -2117,11 +2117,7 @@ fn tree_sitter_subtree(
         let text = doc.text();
         let from = text.char_to_byte(primary_selection.from());
         let to = text.char_to_byte(primary_selection.to());
-        if let Some(selected_node) = syntax
-            .tree()
-            .root_node()
-            .descendant_for_byte_range(from, to)
-        {
+        if let Some(selected_node) = syntax.descendant_for_byte_range(from, to) {
             let mut contents = String::from("```tsq\n");
             helix_core::syntax::pretty_print_tree(&mut contents, selected_node)?;
             contents.push_str("\n```");