Re: [PATCH] scripts: check commit formatting

[Thomas Monjalon <thomas.monjalon@6wind.com>]

2016-03-30 15:27, Bruce Richardson:
> On Wed, Mar 30, 2016 at 09:46:34AM +0800, Yuanhan Liu wrote:
> > On Tue, Mar 29, 2016 at 11:29:46PM +0200, Thomas Monjalon wrote:
> > > The git messages have three parts:
> > > 1/ the headline
> > > 2/ the explanations
> > > 3/ the footer tags
> > > 
> > > The headline helps to quickly browse an history or catch instantly the
> > > purpose of a commit. Making it short with some consistent wording
> > > allows to easily parse it or match some patterns.
> > > 
> > > The explanations must give some keys like the reason of the change.
> > > Nothing can be automatically checked for this part.
> > 
> > Actually, I think we might be able to do 2 tests here:
> > 
> > - space line between paragraphs.
> > 
> > - lines over 80 chars.
> 
> 75 chars for commit messages, and 50 for commit titles :-)

The 75 chars limit is already checked by checkpatch.pl.
But yes we can have our own check in this script.

For the title, I think we can accept 60 chars and exceptionnaly more.

To see the history of title length:
	git log --format='%s' |
	awk '{lens[length($0)]++;} END {for (len in lens) print len, lens[len] }' |
	sort -g