Re: git: b1f7154cb125 - main - gitignore: ignore vim swap files & .rej/.orig

From: Renato Botelho <garga_at_FreeBSD.org>
Date: Fri, 11 Feb 2022 14:58:31 UTC
On 11/02/22 11:38, Drew Gallatin wrote:
> 
> 
> On Fri, Feb 11, 2022 at 4:38 AM Kristof Provost <kp@freebsd.org 
> <mailto:kp@freebsd.org>> wrote:
> 
>     __
> 
>     On 11 Feb 2022, at 2:25, Andrew Gallatin wrote:
> 
>         On 1/17/22 04:35, Alexander V. Chernikov wrote:
> 
>             The branch main has been updated by melifaro:
> 
>             URL:
>             https://urldefense.com/v3/__https://cgit.FreeBSD.org/src/commit/?id=b1f7154cb12517162a51d19ae19ec3f2dee88e11__;!!OToaGQ!4Lozvj8S2Opxre6qHuywX_aNhwm1heXl1CyQyb0N5f_fiBJEkTQGhLzE7KlqqP9C7A$
>             <https://urldefense.com/v3/__https://cgit.FreeBSD.org/src/commit/?id=b1f7154cb12517162a51d19ae19ec3f2dee88e11__;!!OToaGQ!4Lozvj8S2Opxre6qHuywX_aNhwm1heXl1CyQyb0N5f_fiBJEkTQGhLzE7KlqqP9C7A$>
> 
>             commit b1f7154cb12517162a51d19ae19ec3f2dee88e11
>             Author: Alexander V. Chernikov <melifaro@FreeBSD.org>
>             AuthorDate: 2022-01-08 16:14:47 +0000
>             Commit: Alexander V. Chernikov <melifaro@FreeBSD.org>
>             CommitDate: 2022-01-17 09:35:15 +0000
> 
>             gitignore: ignore vim swap files & .rej/.orig
>             Reviewed by: cem, avg
>             MFC after: 2 weeks
> 
>         Hi,
> 
>         I was wondering if you might consider reverting this change?
>         Alternatively, can you teach me how to override this file
>         locally without carrying a diff?
> 
>         I'm asking because this makes life painful for my workflow.
> 
>         Having git clean be able to handle .orig and .rej is incredibly
>         handy when applying large patch sets. It makes finding a rejected
>         patch as simple as 'git clean -n | grep rej'.
> 
> 
>     Would ‘git clean -n -x’ work for you?
> 
>     |-x Don’t use the standard ignore rules (see gitignore(5)), but
>     still use the ignore rules given with -e options from the command
>     line. This allows removing all untracked files, including build
>     products. This can be used (possibly in conjunction with git restore
>     or git reset) to create a pristine working directory to test a clean
>     build. |
> 
> 
> Yes, except it would delete our .obj directories, which I don't want.  
> The -x is how I figured out the .gitignore had been changed.
> 
>     Alternatively, the gitignore(5) man page also mentions that patterns
>     can be listed in
> 
>     |• Patterns read from $GIT_DIR/info/exclude. • Patterns read from
>     the file specified by the configuration variable core.excludesFile. |
> 
>     So I’d think you can overrule things you don’t like from the repo
>     gitignore file in $GIT_DIR/info/exclude or in your global git
>     configuration, especially combined with this:
> 
>     |• An optional prefix "!" which negates the pattern; any matching
>     file excluded by a previous pattern will become included again. It
>     is not possible to re-include a file if a parent directory of that
>     file is excluded. Git doesn’t list excluded directories for
>     performance reasons, so any patterns on contained files have no
>     effect, no matter where they are defined. Put a backslash ("\") in
>     front of the first "!" for patterns that begin with a literal "!",
>     for example, "\!important!.txt". |
> 
>     Kristof
> 
> 
> The problem seems to be that all of these solutions are processed 
> *FIRST*, before a .gitignore in the repo, so they cannot be used to 
> negate a gitignore rule in the repo.  Eg:
> 
> <9:32am>beast/gallatin:work1>kdump | grep NAMI | egrep 
> exclude\|gitignore | head
>   42947 git      NAMI  "/home/gallatin/.gitignore"
>   42947 git      NAMI  "/home/gallatin/.gitignore"
>   42947 git      NAMI  "/data/ocafirmware/.git/info/exclude"
>   42947 git      NAMI  "/data/ocafirmware/.git/info/exclude"
>   42947 git      NAMI  ".gitignore"
>   42947 git      NAMI  "FreeBSD/.gitignore"
> 
> 9:34am>beast/gallatin:work1>cat ~/.gitignore
> !*.orig
> !*.rej
> 
> <9:35am>beast/gallatin:work1>git clean -n | grep rej
> <9:35am>beast/gallatin:work1>git clean -xn | grep rej
> Would remove FreeBSD/sys/dev/mlx5/mlx5_en/en_hw_tls.h.rej
> 
> This makes a stronger case that those who want to ignore .orig and .rej 
> files can add them to *their* local .gitignore, and we should back them 
> out of the .gitignore for the project.

What about -e parameter?  Something like:

git clean -x -e '*.obj'

-- 
Renato Botelho