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Duplicate rules being merged into one

See original GitHub issue

There is an existing issue which seems to be related to my issue but the other one is specifically about the background rule, so I have opened a separate issue incase this needs to be handled differently.

clean-css appears to be removing duplicate CSS rules which are needed.

Take this:

display: -ms-flexbox;
-ms-flex-pack: center;
-ms-flex-align: center;
display: -moz-box;
-moz-box-pack: center;
-moz-box-align: center;
display: -webkit-box;
-webkit-box-pack: center;
-webkit-box-align: center;
display: box;
box-pack: center;
box-align: center;

Which is compressed to (new lines are my own):


How can I stop display: -moz-box; and display: -webkit-box; from being removed?

Edit: I should note that this has just started happening since I updated to the latest version, everything was fine before.


Issue Analytics

  • State:closed
  • Created 10 years ago
  • Comments:8 (2 by maintainers)

github_iconTop GitHub Comments

DevanBcommented, Jan 25, 2017

Ahhh, this is good to know. I may just jump to 4.0 on all projects. Thanks!

On Jan 25, 2017, at 09:27, Jakub Pawlowicz wrote:

Sorry to hear that. In 3.x you can disable it with { aggressiveMerging: false }. It’s entirely gone in 4.x being replaced by overriding based on understandability.

— You are receiving this because you commented. Reply to this email directly, view it on GitHub, or mute the thread.

misam2alicommented, Jan 22, 2018

Glad that this helped me fix a similar issue.

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