iirc there are some issues with the Apache license in GPLv2. GPLv3 
however is fine with the Apache license.

As for dropping JSMin... I never really liked Crockford anyways, nor 
JSMin... so I don't really have any problem. I also don't like the idea 
of maintaining what's essentially a local fork from the upstream, so if 
this is a performance improvement and eliminates the need to fork 
something to get it to do what we want... perfect.

Personally I always had a preference towards YUI's minifier. I haven't 
quite jumped onto closure just yet... in the early days I wasn't sure 
about trusting it to not introduce edge cases into code (since it 
basically does some rewriting of code above what other minifiers do and 
I wasn't sure about it's implementation.

~Daniel Friesen (Dantman, Nadir-Seen-Fire) [http://daniel.friesen.name]

On 11-01-20 06:57 PM, Michael Dale wrote:
> As mentioned in the bug, it would be nice to have configurable support
> for the closure-compiler as well ;) ( I assume Apache licence is
> compatible? )
>
> Has anyone done any tests to see if there are any compatibility issues
> with SIMPLE_OPTIMIZATIONS with a google closure minification hook?
>
> --michael
>
> On 01/20/2011 04:13 PM, Trevor Parscal wrote:
>> For those of you who didn't see bug 26791, our use of JSMin has been
>> found to conflict with our GPL license. After assessing other options (
>> https://bugzilla.wikimedia.org/show_bug.cgi?id=26791#c8 ) Roan and I
>> decided to try and use the minification from JavaScriptPacker, but not
>> its overly clever but generally useless packing techniques. The result
>> is a minifier that outperforms our current minifier in both how quickly
>> it can minify data and how small the minified output is.
>> JavaScriptDistiller, as I sort of randomly named it, minifies JavaScript
>> code at about 2x the speed of Tim's optimized version of JSMin, and 4x
>> the speed of the next fastest PHP port of JSMin (which is generally
>> considered the standard distribution).
>>
>> Similar to Tim's modified version of JSMin, we chose to retain vertical
>> whitespace by default. However we chose not to retain multiple
>> consecutive empty new lines, which are primarily seen where a large
>> comment block has been removed. We feel there is merit to the argument
>> that appx. 1% bloat is a reasonable price to pay for making it easier to
>> read production code, since leaving each statement on a line by itself
>> improves readability and users will be more likely to be able to report
>> problems that are actionable. We do not however find the preservation of
>> line numbers of any value, since in production mode most requests are
>> for many modules which are concatenated, making line numbers for most of
>> the code useless anyways.
>>
>> This is a breakdown based on "ext.vector.simpleSearch"
>>
>> * 3217 bytes (1300 compressed)
>> * 2178 bytes (944) after running it through the version of JSMin that
>> was in our repository. Tim modified JSMin to be faster and preserve line
>> numbers by leaving behind all vertical whitespace.
>> * 2160 bytes (938 compressed) after running it through
>> JavaScriptDistiller, which applies aggressive horizontal minification
>> plus collapsing multiple consecutive new lines into a single new line.
>> * 2077 bytes (923 compressed) after running it through
>> JavaScriptDistiller with the vertical space option set to true, which
>> applies aggressive horizontal minification as well as some basic
>> vertical minification. This option is activated through
>> $wgResourceLoaderMinifyJSVerticalSpace, which is false by default.
>>
>> The code was committed in r80656.
>>
>>    - Trevor (and Roan)
>>
>>
>> _______________________________________________
>> Wikitech-l mailing list
>> Wikitech-l@lists.wikimedia.org
>> https://lists.wikimedia.org/mailman/listinfo/wikitech-l

-- 
~Daniel Friesen (Dantman, Nadir-Seen-Fire) [http://daniel.friesen.name]


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