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Re:What's New in Mercurial 3.0 by davvid on Tuesday April 29, 2014 @05:48PM (#7670147)
It's also the default these days.

    $ git init --bare --shared foo.git
    Initialized empty shared Git repository in foo.git/

    $ cat foo.git/config 
    # ...
    [receive]
    	denyNonFastforwards = true
Re:What's New in Mercurial 3.0 by anton_gogolev on Tuesday April 29, 2014 @05:52PM (#7670171)
I love just how persistent is Git in confusing users. Double negative, anyone?
Re:What's New in Mercurial 3.0 by tsm on Tuesday April 29, 2014 @10:43PM (#7671295)
It's not a double negative...denying non-FFs != allowing FFs.
Re:What's New in Mercurial 3.0 by timv on Wednesday April 30, 2014 @03:57AM (#7672094)
The positive statement would be "onlyFastForwardMerges=true" or "mergesMustBeFastForward=true"
Re:What's New in Mercurial 3.0 by pdhborges on Wednesday April 30, 2014 @03:21AM (#7672005)
why not:

[receive] onlyFastForwards = true