Add cache-busting of images

[scolby33]

I would like to be able to "cache bust" my images, that is add a fragment of a hash to the filename as a final step in the processing, sorta like mv foo.jpg foo.$(shasum foo.jpg | head -c 8).jpg. I've taken a look at the source for this plugin, and don't think it would be too difficult to add. I would be willing to make a PR for this functionality if the maintainers think it belongs here.

[S1SYPHOS]

This would be nice - I guess @minchinweb would agree? 😃

[minchinweb]

Oops...this appears to have been lost for a surprisingly long time. Thank you @S1SYPHOS for bringing this to my attention.

Yes @scolby33 , (if this is still something you're interested in), a PR would be appreciated. Two things that will help me integrate your PR would be 1) a description of your usecase (this helps we understand what you're hoping the new code will do, in a practical sense), and 2) tests (to make sure I don't break the functionality later by accident). Also, feel free to post your code in a WIP state. And if you don't get a response, feel free to ping me too.

@S1SYPHOS If this is something you want to do, you're welcome to have a crack at it too.

[S1SYPHOS]

I'd have to look into your source first - but sure, I guess I could whip something up!

[cargocultprogramming]

Just to add: Besides cache-busting, this would neatly solve the issue of image files with identical names but different content overwriting each other when saved in a single output directory. Also determining if images need to be converted again when the file content, but not the name changes, would be more robust (admittedly I did not check how this is currently done).