gistfile1.txt

gulp.src(...)
    .pipe(gutil.forwardErrors(pluginA()))
    .pipe(gutil.forwardErrors(pluginB()))
    .pipe(gutil.forwardErrors(pluginC()))
        .on('error', function () {
          throw new Error("Do not send to production!");  
        });

gulp.src(..., {forwardErrors: true})
    .pipe(pluginA())
    .pipe(pluginB())
    .pipe(pluginC())
        .on('error', function () {
          throw new Error("Do not send to production!");  
        });

Also, what if we have something like this:

gulp.src(..., { onErrorFunc: console.error})
    .pipe(pluginA())
    .pipe(pluginB())
    .pipe(pluginC())
        .on('error', function () {
          throw new Error("Do not send to production!");  
        });

onErrorFunc would be shorthand for .on('error', console.error) that gets hooked to all streams