Why isn't bless working? It is not splitting main css into multiple css files

[BryanBarrera]

Any help would be appreciated. I am trying to split up my main css stylesheet (specifically for ie9) it exceeds the number of lines that IE9 can handle and I want to add a grunt task which splits the main css sheet into however many it needs to.

I thought bless would solve this but I can't get it to work.

The task below simply just copies the main stylesheet 'foundation.css' into 'tmp/ie.css' - what am I doing wrong?

Here is how I have my task

bless: {
        css: {       
            options: {
                logCount: true, 
                compress: true,
                suffix: 'oldie'
            },
            files: [{ 
              src: 'css/foundation.css', // this is the main stylesheet
              dest: 'tmp/ie.css' // i was hoping bless would split the main stylesheet above into this sheet? how is it suppose to work?
          }] 
        }
    },

[AaronAsAChimp]

Can you please provide the output of grunt with the --verbose --debug options, also please provide the output of grunt --version and node --version.

[BryanBarrera]

Thanks for the quick reply!

Bless --verbose --debug

Running "bless:css" (bless) task
[D] Task source: /Users/Breezyy/Sites/devdesktop/l*******-dev/docroot/sites/all/themes/l*******_foundation/node_modules/grunt-bless/tasks/bless.js
Verifying property bless.css exists in config...OK
Files: css/foundation.css -> tmp/ie.css
Options: compress, logCount, force=false, warnLimit=4013, imports, failOnLimit, suffix="oldie", sourceMaps=false, root="", banner="/* this is a banner */"
Reading css/foundation.css...OK
>> ie has 3901 CSS selectors.
Found 3901 selectors, not splitting.
Writing tmp/ie.css...OK

grunt version

grunt-cli v1.2.0
grunt v1.0.1

node version
v6.6.0

[BryanBarrera]

The stylesheet has exactly 14,501 lines of CSS. I want to split this file up into 3 or how ever many files necessary for IE.

[AaronAsAChimp]

I am not aware of IE having a limit on the number of lines. Bless (and grunt-bless) only splits files based on the number of selectors. You have 3901 selectors, bless splits every 4095.

[BryanBarrera]

Hmm you're right. I thought it was after the 4,095th line, not rules/selectors. I was going off of this - https://support.microsoft.com/en-us/kb/262161 - I guess I misunderstood.

Is there an option or somehow in a future update to tell Bless what 'line number' we want the stylesheet to split at?

This would be extremely useful or nice to have as an option.