[PATCH v2] emacs: globally replace non-branching "(if COND (progn ..." with "(when ..."

[David Edmondson]

On Wed,  1 Feb 2012 14:50:00 +0100, Pieter Praet <pieter at praet.org> wrote:
> Less code, same results, without sacrificing readability.

I didn't check the indentation, but the sense of the changes is good.
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