Comment 4 for bug 614705

this bug also affects me... so I am including more info

This bug is 100% reproducible (at least for me...)

Steps to reproduce:
under Preferences -> Calendar and Tasks -> General under Work days check all but Saturday and Friday
and make sure that under Display make sure that "Compress weekends in month view" is checked.

Expected behavior:
Saturday and Friday should be compressed into a single column.

Actual behavior:
Evolution compresses Saturday and Sunday instead, the default behavior, while marking the weekends with dark grey correctly.

Package Versions:
evolution 2.28.3-0ubuntu10
evolution-common 2.28.3-0ubuntu10
evolution-exchange 2.28.3-0ubuntu10
evolution-plugins 2.28.3-0ubuntu10
evolution-couchdb 0.4.5-0ubuntu1
evolution-data-server 2.28.3.1-0ubuntu5
evolution-data-server-common 2.28.3.1-0ubuntu5
evolution-webcal 2.28.0-1
evolution-indicator 0.2.8-0ubuntu1

I think that weekend compression is hard-coded to Saturday and Sunday, or is controlled by some hidden setting...
It won't be hard to fix...