Eat your own dog food

[qznc]

Applied to itself with default configuration, dfmt source code should not change. More precisely:

dfmt --inplace src/

You should see no change in "git diff" which was not there before.

There are also various changes, which I would consider correct. In a few places we probably want to disable formatting explicitly.

This is kind of a meta issue, since #172 #173 #174 are actual issues that come up, if you do this and maybe there will be more.