1 files changed, 8 insertions, 0 deletions
diff --git a/string.c b/string.c
index 89e88544c..17e392781 100644
--- a/string.c
+++ b/string.c
@@ -4810,6 +4810,13 @@ sym_match(VALUE sym, VALUE other)
 }
 
 static VALUE
+sym_eqq(VALUE sym, VALUE other)
+{
+    if (sym == other) return Qtrue;
+    return rb_str_equal(rb_sym_to_s(sym), other);
+}
+
+static VALUE
 sym_aref(int argc, VALUE *argv, VALUE sym)
 {
     return rb_str_aref_m(argc, argv, rb_sym_to_s(sym));
@@ -5051,6 +5058,7 @@ Init_String(void)
     rb_define_method(rb_cSymbol, "<=>", sym_cmp, 1);
     rb_define_method(rb_cSymbol, "casecmp", sym_casecmp, 1);
     rb_define_method(rb_cSymbol, "=~", sym_match, 1);
+    rb_define_method(rb_cSymbol, "===", sym_eqq, 1);
 
     rb_define_method(rb_cSymbol, "[]", sym_aref, -1);
     rb_define_method(rb_cSymbol, "slice", sym_aref, -1);