From: Brian M. Scott Message: 53803 Date: 2008-02-20
At 2:07:39 AM on Wednesday, February 20, 2008,
fournet.arnaud wrote:
[...]
> The change f to h or h to f
> in either way is not rare.
> Cf. after = Dutch achter.
Which is not, strictly speaking, a change [f] > [h], but
rather [f] > [x]. English has a number of sporadic examples
of [x] > [f] (e.g., <laughter>, <rough>). I don't offhand
know of any examples of [h] > [f].