modifyVars does not work is data image

[no-more]

Hi,

I have an error when trying to pass an encoded base64 image variable in less with modifyVars.

Something like:

var newConfig = {"html_backgroundImage": "data:image/gif;base64,R0lGODlhEAAQAMQAAORHHOVSKudfOulrSOp3WOyDZu6QdvCchPGolfO0o/XBs/fNwfjZ0frl3/zy7////wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAkAABAALAAAAAAQABAAAAVVICSOZGlCQAosJ6mu7fiyZeKqNKToQGDsM8hBADgUXoGAiqhSvp5QAnQKGIgUhwFUYLCVDFCrKUE1lBavAViFIDlTImbKC5Gm2hB0SlBCBMQiB0UjIQA7"};
less.modifyVars(newConfig);

will generate this error :

Uncaught (in promise) LessError:
callExtract: undefined
callLine: NaN
column: 27
extract: Array[3]
filename: "http://client.tbook.test/css/theme.less"
href: "http://client.tbook.test/css/theme.less"
index: 13256
line: 663
message: "Unrecognised input"
stack: undefined
type: "Parse"

Thanks a lot.

[seven-phases-max]

It's the same mistake as in #2372. When you supply a string to modifyVars you need double set of quotes: first quotes for JS and second for Less. (Otherwise your call results in
@html_backgroundImage: data:image/gif;b... which is invalid Less statement of course).

[no-more]

Thanks a lot, that's it.