[PRISM] Fix lambda start column number

Co-Authored-By: Kevin Newton <kddnewton@gmail.com>

2 files changed, 16 insertions, 0 deletions

diff --git a/prism_compile.c b/prism_compile.c
index 0f3b3966b8..ffa5cc77a2 100644
--- a/prism_compile.c
+++ b/prism_compile.c
@@ -2510,6 +2510,13 @@ pm_scope_node_init(const pm_node_t *node, pm_scope_node_t *scope, pm_scope_node_
         scope->parameters = cast->parameters;
         scope->body = cast->body;
         scope->locals = cast->locals;
+
+        if (cast->parameters != NULL) {
+            scope->base.location.start = cast->parameters->location.start;
+        }
+        else {
+            scope->base.location.start = cast->operator_loc.end;
+        }
         break;
       }
       case PM_MODULE_NODE: {
diff --git a/test/ruby/test_compile_prism.rb b/test/ruby/test_compile_prism.rb
index c48b7ac085..927ce3fa0e 100644
--- a/test/ruby/test_compile_prism.rb
+++ b/test/ruby/test_compile_prism.rb
@@ -1838,6 +1838,15 @@ end
       assert_prism_eval("-> { to_s }.call")
     end
 
+    def test_LambdaNode_with_multiline_args
+      assert_prism_eval(<<-CODE)
+        -> (a,
+            b) {
+              a + b
+            }.call(1, 2)
+      CODE
+    end
+
     def test_ModuleNode
       assert_prism_eval("module M; end")
       assert_prism_eval("module M::N; end")