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@@ -16,13 +16,12 @@ class Object
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     builder.c %{
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       VALUE unextend(VALUE mod) 
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       {
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-        VALUE p, prev, _self;
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+        VALUE p, prev;
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         Check_Type(mod, T_MODULE);
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         if (mod == rb_mKernel) 
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           rb_raise(rb_eArgError, "unextending Kernel is prohibited");
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-      	_self = self;
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         p = (TYPE(self) == T_CLASS) ? self : rb_singleton_class(self);
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         if (p == self) 
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@@ -32,7 +31,7 @@ class Object
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             if (p == mod || RCLASS(p)->m_tbl == RCLASS(mod)->m_tbl) {
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                 RCLASS(prev)->super = RCLASS(p)->super;
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                 rb_clear_cache();
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-                rb_funcall(mod, rb_intern("unextended"), 1, _self);
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+                rb_funcall(mod, rb_intern("unextended"), 1, self);
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                 return self;
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             }
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             prev = p;
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@@ -61,18 +60,18 @@ class Class
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     builder.c %{  
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       VALUE uninclude(VALUE mod) 
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       {
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-        VALUE p, prev, _self;
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+        VALUE p, prev;
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         Check_Type(mod, T_MODULE);
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         if (mod == rb_mKernel) 
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           rb_raise(rb_eArgError, "unincluding Kernel is prohibited");
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-        p = _self = self;
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+        p = self;
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         while (p) {
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             if (p == mod || RCLASS(p)->m_tbl == RCLASS(mod)->m_tbl) {
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                 RCLASS(prev)->super = RCLASS(p)->super;
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                 rb_clear_cache();
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-                rb_funcall(mod, rb_intern("unincluded"), 1, _self);
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+                rb_funcall(mod, rb_intern("unincluded"), 1, self);
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                 return self;
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             }
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             prev = p;