protoc_plugin/test/protos/enum_name.proto

syntax = "proto2";

package enum.name;

// Enum with non-standard value-names.
enum A {
  _x = 0;
  _Y = 1;
  Z_ = 2;
  A_A = 4;
  b_b = 5;
  camelCase = 6;
}

message AMessage {
  optional A a = 1;
}