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authorLibravatar Emily Shaffer <emilyshaffer@google.com>2019-10-11 16:55:54 -0700
committerLibravatar Junio C Hamano <gitster@pobox.com>2019-10-12 10:29:15 +0900
commite0479fa07387a7f84dad04a258cd2dc2861c9df9 (patch)
tree741b82b9be9a0f73a93188c046d16a787e5e6df4 /t/t3206/history.export
parentMerge branch 'cc/first-contrib-tutorial' (diff)
downloadtgif-e0479fa07387a7f84dad04a258cd2dc2861c9df9.tar.xz
documentation: add tutorial for object walking
Existing documentation on object walks seems to be primarily intended as a reference for those already familiar with the procedure. This tutorial attempts to give an entry-level guide to a couple of bare-bones object walks so that new Git contributors can learn the concepts without having to wade through options parsing or special casing. The target audience is a Git contributor who is just getting started with the concept of object walking. The goal is to prepare this contributor to be able to understand and modify existing commands which perform revision walks more easily, although it will also prepare contributors to create new commands which perform walks. The tutorial covers a basic overview of the structs involved during object walk, setting up a basic commit walk, setting up a basic all-object walk, and adding some configuration changes to both walk types. It intentionally does not cover how to create new commands or search for options from the command line or gitconfigs. There is an associated patchset at https://github.com/nasamuffin/git/tree/revwalk that contains a reference implementation of the code generated by this tutorial. Signed-off-by: Emily Shaffer <emilyshaffer@google.com> Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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