message: fix: Diffs now use internal diff flag
  fix
diff: @@ -453,13 +453,13 @@ export class Repository {
  public async patch(files: string[]) {
  files = files.map(file => this.removeAbsolutePath(file));
  - const result = await this.exec(["diff", ...files]);
  + const result = await this.exec(["diff", "--internal-diff", ...files]);
  const message = result.stdout;
  return message;
  }
  public async patchChangelist(changelistName: string) {
  - const result = await this.exec(["diff", "--changelist", changelistName]);
  + const result = await this.exec(["diff", "--internal-diff", "--changelist", changelistName]);
  const message = result.stdout;
  return message;
  }
  