hg log --follow <filename> not working as expected

[Andrew Taumoefolau]

Hi all,

Using mercurial 3.6.3, `hg log --follow` doesn’t appear to be following copies. If I set up a repo like so:

$ hg init testcopy
$ cd testcopy
$ touch 1
$ hg add 1
$ hg ci -m "Adding 1!"
$ hg cp 1 2
$ hg ci -m "Adding 2!"
$ echo foo >>2
$ hg ci -m "Modifying 2."
$ hg cp 2 3
$ hg ci -m "Adding 3."

If I run `hg log --follow 3`, I’d expect to see all revisions listed, but I only see the revision in which I add 3. Am I misunderstanding how --follow works, or is this unexpected behaviour?

Cheers,

Andrew