lessc with multiple plugins

[NaNDoon]

Trying to run lessc with two plugins -- clean-css and autoprefixer. One out of every 5-6 times I execute the compiler like so:

lessc --plugin=clean-css="level=1" --plugin=autoprefix="ie 11,Edge >= 13,Chrome >= 47,Firefox >= 45,iOS >= 9.2,Safari >= 9" input.less output.css

I get this message:

undefinedError: Error setting options on plugin index.js
unrecognised clean-css option 'ie'

It appears that clean-css is trying to read the parameters of autoprefixer. When I reverse the order I get a similar error from autoprefixer. I've tried using --autoprefix and --clean-css directly instead of --plugin to no avail. Is there some kind of trick to preventing the either plugin from being "greedy" and reading each other's parameters? Is this a plugin-specific issue?

Thanks!

[cbettinger]

Same here. My workaround is to use lessc twice - even if the output of the first call is CSS already.

"scripts": {
   "css": "lessc --autoprefix style.less style.css",
   "css:min": "npm run css && lessc --clean-css style.css style.css",
   ...
}

[matthew-dean]

I was never able to reproduce this issue. I did however encounter a bug where those two Node.js plugins couldn't be loaded at all, so I'll make that PR and maybe you can re-check this. As far as I could tell, both plugins were only receiving their own options.