Bump tree-sitter-r (#624)

* Bump tree-sitter version to get r-lib/tree-sitter-r#152

* Add indent test

* tree-sitter-r PR has been merged

crates/ark/Cargo.toml

@@ -47,7 +47,7 @@ stdext = { path = "../stdext" }
 tokio = { version = "1.26.0", features = ["full"] }
 tower-lsp = "0.19.0"
 tree-sitter = "0.23.0"
-tree-sitter-r = { git = "https://github.com/r-lib/tree-sitter-r", rev = "2097fa502efa21349d26af0ffee55d773015e481" }
+tree-sitter-r = { git = "https://github.com/r-lib/tree-sitter-r", rev = "c094bd57652f8a08edc31d79a31222268fe798ee" }
 uuid = "1.3.0"
 url = "2.4.1"
 walkdir = "2"

crates/ark/src/lsp/indent.rs

@@ -238,6 +238,22 @@ mod tests {
         assert_match!(indent_edit(&doc, 2), Err(_));
     }
 
+    #[test]
+    fn test_line_indent_leading_whitespace() {
+        // Indent should be unchanged regardless of how much leading whitespace
+        // there is before the first newline
+        // https://github.com/posit-dev/positron/issues/5258
+        let text = String::from("  \nx");
+        let doc = test_doc(&text);
+        let edit = indent_edit(&doc, 1).unwrap();
+        assert!(edit.is_none());
+
+        let text = String::from("\r\nx");
+        let doc = test_doc(&text);
+        let edit = indent_edit(&doc, 1).unwrap();
+        assert!(edit.is_none());
+    }
+
     #[test]
     fn test_line_indent_chains() {
         let mut text = String::from("foo +\n  bar +\n    baz + qux |>\nfoofy()");