2 files changed, 0 insertions, 28 deletions
diff --git a/src/string.c b/src/string.c
index db2d73e32..bfe73b359 100644
--- a/src/string.c
+++ b/src/string.c
@@ -449,9 +449,6 @@ str_substr(mrb_state *mrb, mrb_value str, mrb_int beg, mrb_int len)
   if (clen == 0) {
     len = 0;
   }
-  else if (beg < 0) {
-    beg = clen + beg;
-  }
   if (beg > clen) return mrb_nil_value();
   if (beg < 0) {
     beg += clen;
diff --git a/src/vm.c b/src/vm.c
index 8dc6623d1..0a6d4af8d 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -830,31 +830,6 @@ mrb_yield_cont(mrb_state *mrb, mrb_value b, mrb_value self, mrb_int argc, const
   return mrb_exec_irep(mrb, self, p);
 }
 
-mrb_value
-mrb_mod_s_nesting(mrb_state *mrb, mrb_value mod)
-{
-  struct RProc *proc;
-  mrb_value ary;
-  struct RClass *c = NULL;
-
-  mrb_get_args(mrb, "");
-  ary = mrb_ary_new(mrb);
-  proc = mrb->c->ci[-1].proc;   /* callee proc */
-  mrb_assert(!MRB_PROC_CFUNC_P(proc));
-  while (proc) {
-    if (MRB_PROC_SCOPE_P(proc)) {
-      struct RClass *c2 = MRB_PROC_TARGET_CLASS(proc);
-
-      if (c2 != c) {
-        c = c2;
-        mrb_ary_push(mrb, ary, mrb_obj_value(c));
-      }
-    }
-    proc = proc->upper;
-  }
-  return ary;
-}
-
 static struct RBreak*
 break_new(mrb_state *mrb, struct RProc *p, mrb_value val)
 {