I happened to be reading an old discussion on trailers a few weeks ago,
and the idea was mentioned of providing access to commit trailers in a
more structured way from traversal commands. E.g., we could presumably
have a log pretty-format for showing "Signed-off-by", like
"%(trailer:signed-off-by)" or something. But that opens up a lot of
questions, like the exact formatting, whether we would allow wildcards
("*-by:"), and if so how that affects formatting.
So I took the cowards way out and implemented trailer support for
git-shortlog, which seemed much simpler. I'll admit I haven't used it
for anything so far beyond a few "fun" queries, but it does provide some
infrastructure we could use later for git-log.
And things being what they are, I ended up with a few cleanups and
optimizations along the way. After this series, a regular "shortlog -ns"
is about 10% faster.
[01/14]: move string functions out of git-compat-util
[02/14]: log: refactor add_header to drop some magic numbers
[03/14]: strutil: add skip_prefix_case
[04/14]: shortlog: use skip_prefix_icase to parse "Author" lines
[05/14]: shortlog: use strbufs to read from stdin
[06/14]: shortlog: replace hand-parsing of author with pretty-printer
[07/14]: shortlog: optimize "--summary" mode
[08/14]: shortlog: optimize out useless "<none>" normalization
[09/14]: shortlog: optimize out useless string list
[10/14]: shortlog: change "author" variables to "ident"
[11/14]: shortlog: allow grouping by committer ident
[12/14]: trailer: factor out config reading
[13/14]: trailer: add interface for parsing commit trailers
[14/14]: shortlog: match commit trailers with --ident
-Peff
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