Avoid removing comments in RUF005

resources/test/fixtures/ruff/RUF005.py

@@ -20,3 +20,21 @@ def yay(self):
 chain = ['a', 'b', 'c'] + eggs + list(('yes', 'no', 'pants') + zoob)
 
 baz = () + zoob
+
+# OK (false negative - need to preserve comments)
+first = [
+    # The order
+    1,  # here
+    2,  # is
+    # extremely
+    3,  # critical
+    # to preserve
+]
+second = first + [
+    # please
+    4,
+    # don't
+    5,
+    # touch
+    6,
+]

src/rules/ruff/rules/unpack_instead_of_concatenating_to_collection_literal.rs

@@ -1,6 +1,6 @@
 use rustpython_ast::{Expr, ExprContext, ExprKind, Operator};
 
-use crate::ast::helpers::{create_expr, unparse_expr};
+use crate::ast::helpers::{create_expr, has_comments_in, unparse_expr};
 use crate::ast::types::Range;
 use crate::checkers::ast::Checker;
 use crate::fix::Fix;
@@ -61,6 +61,11 @@ pub fn unpack_instead_of_concatenating_to_collection_literal(checker: &mut Check
         return;
     }
 
+    // We'll also avoid removing any comments.
+    if has_comments_in(Range::from_located(expr), checker.locator) {
+        return;
+    }
+
     let new_expr = match kind {
         Kind::List => create_expr(ExprKind::List {
             elts: make_splat_elts(splat_element, other_elements, splat_at_left),