[Cocci] coccinelle: Convert comma to semicolons (was Re: [PATCH] checkpatch: Add test for comma use that should be semicolon)

[Joe Perches]

On Thu, 2020-09-24 at 22:19 +0200, Thomas Gleixner wrote:
> On Sat, Aug 22 2020 at 09:07, Julia Lawall wrote:
> > On Fri, 21 Aug 2020, Joe Perches wrote:
> > > True enough for a general statement, though the coccinelle
> > > script Julia provided does not change a single instance of
> > > for loop expressions with commas.
> > > 
> > > As far as I can tell, no logic defect is introduced by the
> > > script at all.
> > 
> > The script has a rule to ensure that what is changed is part of a top
> > level statement that has the form e1, e2;.  I put that in to avoid
> > transforming cases where the comma is the body of a macro, but it protects
> > against for loop headers as well.
> 
> Right. I went through the lot and did not find something dodgy. Except
> for two hunks this still applies. Can someone please send a proper patch
> with changelog/SOB etc. for this?

Treewide?

Somebody no doubt would complain, but there
_really should_ be some mechanism for these
trivial and correct treewide changes...