Buf v0.18.1 is released - fix issue with linking errors for custom options with message types

[bufbuild-announce]

We have released Buf v0.18.1.

This is a bug fix release. There was an issue where references to custom options in a separate file of a message type were not being reported. That's a lot of words, so as an example:

// a.proto

syntax = "proto2";

package a;

import "google/protobuf/descriptor.proto";

extend google.protobuf.FieldOptions {

  optional Foo foo = 50001;

}

message Foo {

  optional string bar = 1;

}

Then, assume b.proto imports a.proto:

// b.proto

syntax = "proto3";

package a;

import "a.proto";

message Baz {

  // the actual name is (a.foo).bar

  // previously, this would have resulted in no error

  // with 0.18.1, this properly results in a build error

  string bat = 1 [(a.foo).ban = "bam"];

}

The brew tap has been updated.