Files are not renamed when using custom_dest

[svossen]

I use grunt-responsive-images to resize 2x icons to 1x icons. When I use custom_dest, the files are not renamed. When I use the regular dest the files are renamed correctly. This is my config:

responsive_images: {
    icons: {
        options: {
            sizes: [{
                name: '1x',
                width: '50%',
                height: '50%',
                suffix: '-1x'
            }, {
                name: '2x',
                width: '100%',
                height: '100%',
                suffix: '-2x'
            }]
        },
        files: [{
            expand: true,
            src: ['*.{jpg,gif,png}'],
            cwd: 'src/images/sprite/icons-original/',
            custom_dest: 'src/images/sprite/icons-{%= name %}/'
        }]
    },
}

Is there a way to use the file rename option in combination with the custom_dest option?

[svossen]

I made a change to the config. With his config I don't need the custom_dest function:

responsive_images: {
    "icons-1x": {
        options: {
            sizes: [{
                name: '1x',
                width: '50%',
                height: '50%'
            }]
        },
        files: [{
            expand: true,
            src: ['*.{jpg,gif,png}'],
            cwd: 'src/images/sprite/icons-original/',
            dest: 'src/images/sprite/icons-1x/'
        }]
    },
    "icons-2x": {
        options: {
            sizes: [{
                name: '2x',
                width: '100%',
                height: '100%'
            }]
        },
        files: [{
            expand: true,
            src: ['*.{jpg,gif,png}'],
            cwd: 'src/images/sprite/icons-original/',
            dest: 'src/images/sprite/icons-2x/'
        }]
    },
},

[mattgreenfield]

I can confirm that this is happening for me too, maybe it could be added to the docs for custom_dest in the mean time?