-tag

is a repeatable cli option, but gradle is only outputting it once. Am I doing something wrong? is this a bug? if so can I workaround it?

implNote

is actually working correctly

tasks.withType<Javadoc>().configureEach {
  (options as StandardJavadocDocletOptions).apply {
    addStringOption("tag", "apiNote:a:API Note:")
    addStringOption("tag", "implNote:a:Implementation Note:")
  }
}

try

addMultilineStringsOption("tag").setValue(...)

https://docs.gradle.org/current/javadoc/org/gradle/external/javadoc/CoreJavadocOptions.html#addMultilineStringsOption-java.lang.String-

that works, thanks.