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From: Christian Couder <>
To: Rohit Ashiwal <>
Cc: Johannes Schindelin <>,
	Ramkumar Ramachandra <>,
	git <>, Elijah Newren <>,
	Stephan Beyer <>,
	Thomas Gummerer <>,
	Alban Gruin <>,
Subject: Re: [GSoC][RFC v2] Improve consistency of sequencer commands
Date: Sat, 30 Mar 2019 08:16:10 +0100
Message-ID: <> (raw)
In-Reply-To: <>

Hi Rohit,

On Fri, Mar 29, 2019 at 11:33 PM Rohit Ashiwal
<> wrote:
> This is the v2 of the draft proposal[1]. I've added some details to the proposal,
> it talks more about what to implement instead of how. It is still incomplete.
> I'm currently adding more to the overview section, where I'll document the work
> done by Dscho and Alban. After that I'll find files that will be changed while
> implementing rest of the flags, finally add the basic control and/or data flow
> of the 'how' part.

The plan to improve it looks good to me.

> ### List of Contributions at Git:
> Repo                              |        Status           |                   Title
> -|-|-
> [git/git][8]                      | Merged in 'next' branch | [Micro][3]**:** Use helper functions in test script

It would be nice to have a link to the last "What's cooking in
git.git" email from Junio so we can easily see the current status of
your patch/patch series.

> [git-for-windows/git][9]          | Merged and released     | [#2077][4]**:** [FIX] git-archive error, gzip -cn : command not found.
> [git-for-windows/build-extra][10] | Merged                  | [#235][5]**:** installer: Fix version of installer and installed file.
> ## The Project
> ### _Improve consistency of sequencer commands_
> #### Overview
> Stephan Beyer \<> tried to introduce git-sequencer as his GSoC
> 2008 [project][6] which executed a sequence of git instructions to  \<HEAD> or
> \<branch> and the sequence was given by a \<file> or through `stdin`. The
> git-sequencer wants to become the common backend for git-am, git-rebase and
> other git commands. Unfortunately, most of the code did not get merged during
> the SoC period but he continued his contributions to the project along with
> Christian Couder \<> and then mentor Daniel Barkalow
> \<>.
> The project was continued by Ramkumar Ramachandra \<> in
> [2011][7], converting it to a builtin and extending its domain to
> git-cherry-pick.

I don't think the sequencer has been converted into a builtin. I am
not sure why Ram wrote that he would do that in his proposal as I
don't think it was really a goal we had.

By the way, you might want to read the sequencer related article in for things that
Dscho did.

> The learnings from all those works will serve as a huge headstart this year for
> me.
> As of now, there are still some inconsistencies among these commands, e.g.,
> there is no `--skip` flag in `git-cherry-pick` while one exists for
> `git-rebase`. This project aims to remove inconsistencies in how the command
> line options are handled.


> 5. `[Bonus]` As familiarity with the code increases, I might be able to implement
> the feature of rewriting commits in time.

I had to go back to the "Points to work on" section to understand what
this was about. Please describe what this is about in a clearer way.

> 6. `[Bonus]` If everything goes well and time permits, discuss with the mentor(s)
> the possibility of deprecating the am backend of rebase. This point is last to
> work on as it provides no "cosmetic" difference on the user side. Elijah
> [mentioned][12] the possibility of a "social" problem that might occur which shall
> be discussed then.

Maybe it would be interesting to see if there is a performance
difference between the 2 backends.


> #### Relevant Work
> Dscho and I had a talk on how a non-am backend should implement `git rebase
> --whitespace=fix`, which he warned may become a large project (as it turns out
> it is a sub-task in one of the [proposed ideas][11]), we were trying to
> integrate this on git-for-windows first.
> Keeping warning in mind, I discussed this project with Rafael and he suggested
> (with a little bit uncertainty in mind) that I should work on implementing a
> git-diff flag that generates a patch that when applied, will remove whitespace
> errors which I am currently working on.


  parent reply	other threads:[~2019-03-30  7:16 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-24 10:05 [GSoC] Introduction Rohit Ashiwal
2019-02-24 14:47 ` Johannes Schindelin
2019-02-25  6:50 ` Christian Couder
2019-02-25 11:35   ` Rohit Ashiwal
2019-02-25 20:21     ` Christian Couder
2019-02-25 21:09       ` Eric Sunshine
2019-03-22 15:11 ` [GSoC][RFC] Proposal: Improve consistency of sequencer commands Rohit Ashiwal
2019-03-23 22:17   ` Christian Couder
2019-03-24  1:21     ` Rohit Ashiwal
2019-03-24  1:07   ` Elijah Newren
2019-03-24  1:45     ` Rohit Ashiwal
2019-03-29 22:32 ` [GSoC][RFC v2] " Rohit Ashiwal
2019-03-29 23:25   ` Elijah Newren
2019-03-29 23:34     ` Rohit Ashiwal
2019-03-30  0:38       ` Elijah Newren
2019-03-30  8:48         ` Rohit Ashiwal
2019-03-30 17:13           ` Elijah Newren
2019-03-30  7:16   ` Christian Couder [this message]
2019-03-30 17:12     ` Elijah Newren
2019-04-05 21:31 ` [GSoC][RFC v3] Proposal: " Rohit Ashiwal
2019-04-07  7:15   ` Christian Couder
2019-04-07 12:16     ` Rohit Ashiwal
2019-04-07 23:07       ` Christian Couder

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