Bug + workaround: extName option ignored for JPGs unless format: "jpg" (not format: "jpeg")

[jm3]

As mentioned in #118 and bug bounty 72142256, the extname option to rename as described in the README does not work (it works, it just gets overriden by the implicit format), so that all JPGs are force-renamed to 'jpeg', regardless of

1. input name,
2. the specfied extname, or
3. even a literal filename containing e.g. ".jpg"

… all get smashed to *.jpeg.

REPRO:

var gulp = require('gulp');
var $ = require('gulp-load-plugins')();

gulp.task('default', function () {
  return gulp.src('img-src/*.jpg')
    .pipe($.responsive({
      '*.jpg': {
        width: 200,
        rename: { 
          suffix: '-200w',
          extname: '.jpg'
        },
    }))
    .pipe(gulp.dest('public/img'));
});

npx gulp
[21:29:56] gulp-responsive: test.jpg -> test-200w.jpeg

note that test.JPG → test.JPEG, not test.JPG

WORKAROUND:

omit extname: '...' and instead pass format: 'jpg'

gulp.task('default', function () {
  return gulp.src('img-src/*.{jpg,png}')
    .pipe($.responsive({
      '*.jpg': {
        width: 200,
        rename: { 
          suffix: '-200w',
        },
        format: 'jpg'
      },
    }, {}))
    .pipe(gulp.dest('public/img'));
});

npx gulp
[21:41:45] gulp-responsive: test.jpg -> test-200w.jpg

Tada! 🎉

[StarpTech]

Fixed in https://github.com/mahnunchik/gulp-responsive/pull/129

[krisdante]

https://github.com/mahnunchik/gulp-responsive/issues/136 seems there is a regression as this problem is back