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#!/usr/bin/bash
# name: git_report.sh
# author: nbehrnd@yahoo.com
# license: MIT
# date: [2022-12-12 Mon]
# edit: [2023-01-21 Sat]
# Why:
# The preparation of file `copyright` with `gem2deb` about `markdownlint` only
# states Mark Harrison as copyright holder. This omits subsequent contributors;
# between [2014-05-31 Sat] and [2022-12-15 Thu], 353 commits by 52 contributors
# were merged. There is a perceived need to report everyone from the git log,
# though automated. Pending a reply to my question to the mailing list,[1] the
# eventual pattern will report name, address, and year of of first contribution.
#
# This script is the first of two assistants written to ease packaging for
# Debian (the other 'simpler_list.py', see there). The present shell script
# only retrieves the relevant data from git, and performs a first round of data
# cleaning.
#
# How to:
# Copy-paste of this bash script into a local git repository of `markdownlint`.
# With
#
# ```shell
# bash ./git_report.sh > listing.txt
# ```
#
# there will be a permanent record with entries in pattern of
#
# ```
# 1864 Henri Dunant <henri@example01.org>
# 1888 John Dunlop <john@example02.com>
# ```
#
# with entries sort in chronological ascending order. This script intentionally
# reverses the "geological sort" with the most recent entry on top usually seen.
# The script was written for and tested with `bash` (GNU bash version 5.2.15),
# `git` (2.39.0), and `sed` (4.9) as shipped with Linux Debina 12/bookworm.
#
# The subsequent step:
# Authors committing in multiple years still appear multiple times in the record
# written. See script `simpler_list.py` to address this issue.
#
# [1] https://lists.debian.org/debian-ruby/2022/12/msg00010.html, sent on
# [2022-12-09 Fri].
git log --reverse --pretty='format: %ad %an <%ae>' | \
sed -e 's/.\{9\}[0-9]\+.\{10\}//' | \
sed -e 's/[\+-][0-9]\{4\} //' | uniq
|
