on("end", fn ()) does not appear to be working correctly

Someone raised an issue in gulp-jasmine (sindresorhus/gulp-jasmine#69) about the end event, and it seems to be caused by gulp:

gulp.task("default", function (callback) {
    gulp.src("test.spec.js")
        .on("end", function () {
            console.log("We're done!");
            callback();
        });
});

works with gulp@3.7 but stopped working with gulp@3.8.

Returning the pipe:

gulp.task("default", function () {
    return gulp.src("test.spec.js")
        .on("end", function () {
            console.log("We're done!");
        });
});

works as expected. Not sure if I’m missing something (I rarely use callbacks).

[phated]

You can return your stream or attach an on('data', noop) handler.

[phated]

Technically a stream that ends with a transform stream (through2) won’t end either. You have to end on a Writable stream. I’m also wondering why you aren’t using 3.9.1