message: Use auto consequently
diff: @@ -106,7 +106,7 @@ log_type make_log(Ts&&... xs) {
  }
  // Tests basic functionality.
  -const char* ini0 = R"(
  +const auto ini0 = R"(
  [1group]
  1value=321
  [_foo]
  @@ -205,7 +205,7 @@ const auto ini0_log = make_log(
  // clang-format on
  // Tests nested parameters.
  -const char* ini1 = R"(
  +const auto ini1 = R"(
  foo {
  bar = {
  value1 = 1
  @@ -242,11 +242,11 @@ const auto ini1_log = make_log(
  );
  // clang-format on
  -const char* ini2 = "#";
  +const auto ini2 = "#";
  const auto ini2_log = make_log();
  -const char* ini3 = "; foobar\n!";
  +const auto ini3 = "; foobar\n!";
  const auto ini3_log = make_log();
  