Possible bug with dot at beginning of line, ternary and object

1.7.0 added “Leading . now closes all open calls, allowing for simpler chaining syntax.”

This is great, but I may have just stumbled on a bug with that when using the ternary operator and an object argument.

gulp.task 'stylus', ->
    gulp.src [
        './src/stylus/vars.styl'
        './src/stylus/**/*.styl'
    ]
        .pipe if argv.sourcemaps then require('gulp-sourcemaps').init() else gutil.noop()
        .pipe require('gulp-concat') 'styles.styl'
        .pipe require('gulp-stylus')
            use: require('nib')()
        .pipe if isLocal() then gutil.noop() else require('gulp-minify-css')
            compatibility: '' # Empty string is IE9+ (this is default)
        .pipe if argv.sourcemaps then require('gulp-sourcemaps').write() else gutil.noop()
        .pipe gulp.dest './dist/css'

This is coming out as

// Generated by CoffeeScript 1.9.2
gulp.task('stylus', function() {
  return gulp.src(['./src/stylus/vars.styl', './src/stylus/**/*.styl']).pipe(argv.sourcemaps ? require('gulp-sourcemaps').init() : gutil.noop()).pipe(require('gulp-concat')('styles.styl')).pipe(require('gulp-stylus')({
    use: require('nib')()
  })).pipe(isLocal() ? gutil.noop() : require('gulp-minify-css')({
    compatilibilty: ''
  }).pipe(argv.sourcemaps ? require('gulp-sourcemaps').write() : gutil.noop())).pipe(gulp.dest('./dist/css'));
});

I was expecting

• compatibility: '' object to be an argument to require('gulp-minify-css') — in this case the result is as expected.
• the dot at the start of the next line to close both the ternary and the pipe() from the preceding line — in this case the result is not as expected: the next .pipe() is chained on the end of the gulp-minify-css object.

Note that the gulp-stylus pipe above also receives an object as an argument but does not have a ternary. This one compiles as I expect.

Note also that the gulp-sourcemaps pipes have ternaries but no object argument, and these ones also compile as I expect.

So it seems it’s a combination of the tenary and the object argument on a new line.

Is this a bug or am I understanding something incorrectly?