I'm working on proposing ownCloud move from mrclay/minify JSMin to JSqueeze (for licensing, maintenance, and performance reasons), but now I actually managed to get an OC 8 install up and asset pipelining enabled and stuck in my test patch to switch, I find JSqueeze seems to produce broken code when minifying ownCloud's core JS.

The file in question is (I think) https://github.com/owncloud/core/blob/01374ab6b54091a8ade4a48f8a67d42c928502e8/core/js/js.js (I'm working with that exact git commit at present). The minified version is https://www.happyassassin.net/temp/ocjs-minified.txt . When I load any ownCloud page with the JSqueeze-minified JS, it fails to work properly at all (lots of layout issues, no menus working etc) and the Firefox debugger shows:

SyntaxError: missing } after property list 5fd4952a40df28b50e6d50759345648a.js:61

ocjs-minified.txt is that line 61 from the big minified file.

I don't see the same issue with the source javascript, or with the same files minified by JSMin or JShrink.

Note, I'm invoking JSqueezeFilter like this:

            $jsqueeze = new JSqueezeFilter();
            $jsqueeze->setSpecialVarRx(false);
            return new FileAsset($root . '/' . $file, array(
                $jsqueeze
            ), $root, $file);

to try and disable the 'special' variable renaming feature, as I saw from other reports it seems to cause issues. If I drop the $jsqueeze->setSpecialVarRx(false); line the error actually goes away (and the JS gets a bit smaller), but the JS still fails to load properly.