Re: [RFC for GIT] pull-request: add praise to people doing QA

[Jeff King <peff@peff.net>]

On Thu, Jan 19, 2017 at 09:43:45PM +0100, Wolfram Sang wrote:

> > As to the implementation, I am wondering if we can make this somehow
> > work well with the "trailers" code we already have, instead of
> > inventing yet another parser of trailers.  
> > 
> > In its current shape, "interpret-trailers" focuses on "editing" an
> > existing commit log message to tweak the trailer lines.  That mode
> > of operation would help amending and rebasing, and to do that it
> > needs to parse the commit log message, identify trailer blocks,
> > parse out each trailer lines, etc.  
> > 
> > There is no fundamental reason why its output must be an edited
> > original commit log message---it should be usable as a filter that
> > picks trailer lines of the selected trailer type, like "Tested-By",
> > etc.
> 
> I didn't know about trailers before. As I undestand it, I could use
> "Tested-by" as the key, and the commit subject as the value. This list
> then could be parsed and brought into proper output shape. It would
> simplify the subject parsing, but most things my AWK script currently
> does would still need to stay or to be reimplemented (extracting names
> from tags, creating arrays of tags given by $name). Am I correct?
> 
> All under the assumption that trailers work on a range of commits. I
> have to admit that adding this to git is beyond my scope.

This sounds a lot like the shortlog-trailers work I did about a year
ago:

  http://public-inbox.org/git/20151229073832.GN8842@sigill.intra.peff.net/

  http://public-inbox.org/git/20151229075013.GA9191@sigill.intra.peff.net/

Nobody seemed to really find it useful, so I didn't pursue it.

Some of the preparatory patches in that series bit-rotted in the
meantime, but you can play with a version based on v2.7.0 by fetching
the "shortlog-trailers-historical" branch from
https://github.com/peff/git.git.

And then things like:

  git shortlog --ident=tested-by --format='...tested a patch by %an'

work (and you can put whatever commit items you want into the --format,
including just dumping the hash if you want to do more analysis).

-Peff