tool/insns2vm.rb: get rid of expanding paths

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65157 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

tool/ruby_vm/helpers/dumper.rb

@@ -25,7 +25,7 @@ class RubyVM::Dumper
   end
 
   def new_erb spec
-    path  = Pathname.new(__FILE__).realpath.dirname
+    path  = Pathname.new(__FILE__).relative_path_from(Pathname.pwd).dirname
     path += '../views'
     path += spec
     src   = path.read mode: 'rt:utf-8:utf-8'
@@ -37,7 +37,7 @@ class RubyVM::Dumper
     else
       erb = ERB.new(src, nil, '%-')
     end
-    erb.filename = path.realpath.to_path
+    erb.filename = path.to_path
     return erb
   end
 
@@ -87,7 +87,7 @@ class RubyVM::Dumper
   def initialize dst
     @erb   = {}
     @empty = new_binding
-    @file  = cstr dst.realdirpath.to_path
+    @file  = cstr dst.to_path
   end
 
   def render partial, opts = { :locals => {} }