Unlike other git commands which work correctly at the top-level or in a
subdirectory, git-contacts fails when invoked in a subdirectory. This is
because it invokes git-blame with pathnames relative to the top-level,
but git-blame interprets the pathnames as relative to the current
directory. Fix this.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-contacts invokes git-blame once for each patch hunk it encounters.
No attempt is made to consolidate invocations for multiple hunks
referencing the same file at the same revision. This can become
expensive quickly.
Reduce the number of git-blame invocations by taking advantage of the
ability to specify multiple -L ranges for a single invocation.
Without this patch, on a randomly chosen range of commits:
% time git-contacts 25fba78d36be6297^..23c339c0f262aad2 >/dev/null
real 0m6.142s
user 0m5.429s
sys 0m0.356s
With this patch:
% time git-contacts 25fba78d36be6297^..23c339c0f262aad2 >/dev/null
real 0m2.285s
user 0m2.093s
sys 0m0.165s
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-contacts invokes git-blame immediately upon encountering a patch
hunk. No attempt is made to consolidate invocations for multiple hunks
referencing the same file at the same revision. This can become
expensive quickly.
Any effort to reduce the number of times git-blame is run will need to
to know in advance which line ranges to blame per file per revision.
Make this information available by collecting all sources as a distinct
step from invoking git-blame. A subsequent patch will utilize the
information to optimize git-blame invocations.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Rather than calling get_blame() with a zero-length hunk only to have it
rejected immediately, perform hunk-length validation earlier in order to
avoid calling get_blame() unnecessarily.
This is a preparatory step to simplify later patches which reduce the
number of git-blame invocations by collecting together all lines to
blame within a single file at a particular revision. By validating the
blame range early, the subsequent patch can more easily avoid adding
empty ranges at collection time.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The purpose of git-contacts is to determine a list of people who might
have some interest in a patch or set of changes. It can be used as
git-send-email's --cc-cmd argument or the computed list might be used to
ask for comments on a proposed change. As such, it is important to
report up-to-date email addresses in the computed list rather than
potentially outdated ones recorded with commits. Apply git's mailmap
functionality to the retrieved contacts in order to achieve this goal.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As a convenience, accept the same style <since> committish as accepted
by git-format-patch. For example:
% git contacts origin
will consider commits in the current branch built atop 'origin', just as
"git format-patch origin" will format commits built atop 'origin'.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
For example:
% git contacts R1..R2
Committishes and patch files can be mentioned in the same invocation:
% git contacts R1..R2 extra/*.patch
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This script lists people that might be interested in a patch by going
back through the history for each patch hunk, and finding people that
reviewed, acknowledged, signed, authored, or were Cc:'d on the code the
patch is modifying.
It does this by running git-blame incrementally on each hunk and then
parsing the commit message. After gathering all participants, it
determines each person's relevance by considering how many commits
mentioned that person compared with the total number of commits under
consideration. The final output consists only of participants who pass a
minimum threshold of participation.
Several conditions controlling a person's significance are currently
hard-coded, such as minimum participation level, blame date-limiting,
and -C level for detecting moved and copied lines. In the future, these
conditions may become configurable.
For example:
% git contacts 0001-remote-hg-trivial-cleanups.patch
Felipe Contreras <felipe.contreras@gmail.com>
Jeff King <peff@peff.net>
Max Horn <max@quendi.de>
Junio C Hamano <gitster@pobox.com>
Thus, it can be invoked as git-send-email's --cc-cmd option, among other
possible uses.
This is a Perl rewrite of Felipe Contreras' git-related patch series[1]
written in Ruby.
[1]: http://thread.gmane.org/gmane.comp.version-control.git/226065/
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
