|  | @@ -154,14 +154,15 @@ def get_proto_arguments(protos, genfiles_dir_path):
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				|  |  |      """Get the protoc arguments specifying which protos to compile."""
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				|  |  |      arguments = []
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				|  |  |      for proto in protos:
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				|  |  | -        massaged_path = proto.path
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				|  |  | +        strip_prefix_len = 0
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				|  |  |          if is_in_virtual_imports(proto):
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				|  |  |              incl_directory = get_include_directory(proto)
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				|  |  | -            if massaged_path.startswith(incl_directory):
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				|  |  | -                massaged_path = massaged_path[len(incl_directory) + 1:]
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				|  |  | -        elif massaged_path.startswith(genfiles_dir_path):
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				|  |  | -            massaged_path = proto.path[len(genfiles_dir_path) + 1:]
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				|  |  | -        arguments.append(massaged_path)
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				|  |  | +            if proto.path.startswith(incl_directory):
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				|  |  | +                strip_prefix_len = len(incl_directory) + 1
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				|  |  | +        elif proto.path.startswith(genfiles_dir_path):
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				|  |  | +            strip_prefix_len = len(genfiles_dir_path) + 1
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				|  |  | +
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				|  |  | +        arguments.append(proto.path[strip_prefix_len:])
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				|  |  |  
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				|  |  |      return arguments
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				|  |  |  
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				|  | @@ -191,7 +192,7 @@ def declare_out_files(protos, context, generated_file_format):
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				|  |  |      ]
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				|  |  |  
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				|  |  |  def get_out_dir(protos, context):
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				|  |  | -    """ Returns the calcualted value for --<lang>_out= protoc argument based on
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				|  |  | +    """ Returns the calculated value for --<lang>_out= protoc argument based on
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				|  |  |      the input source proto files and current context.
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				|  |  |  
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				|  |  |      Args:
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				|  | @@ -220,7 +221,7 @@ def is_in_virtual_imports(source_file, virtual_folder = _VIRTUAL_IMPORTS):
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				|  |  |      _virtual_imports directory.
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				|  |  |  
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				|  |  |      Args:
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				|  |  | -        context: A ctx object for the rule.
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				|  |  | +        source_file: A proto file.
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				|  |  |          virtual_folder: The virtual folder name (is set to "_virtual_imports"
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				|  |  |              by default)
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				|  |  |      Returns:
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