Re: [PATCH/resent 0/9] Sparse checkout (first half)

["Santi Béjar" <santi@agolina.net>]

On Wed, Oct 1, 2008 at 2:09 PM, Nguyen Thai Ngoc Duy <pclouds@gmail.com> wrote:
> On 10/1/08, Santi Béjar <santi@agolina.net> wrote:
>> On Wed, Oct 1, 2008 at 12:20 PM, Santi Béjar <santi@agolina.net> wrote:
>>  > Not in this half but I've seen that you added a --default-sparse flag
>>  > to "git clone". I think it is useless as mostly always the one given
>>  > in -sparse-checkout should be used.
>>
>>
>> To be more precise, whenever you do "git clone --sparse-checkout" you
>>  will want it to be the default sparse pattern.
>
> Yes, if only the default pattern gets updated properly when you update
> your checkout area.

I don't parse this sentence, but I cannot see the connection between
the default sparse pattern for _clone_ and updating it or the working
area.

> If "git clone --sparse-checkout" makes the default
> pattern, then "git checkout --reset-sparse" should reset the default
> pattern as well.

Makes sense.

> The hard part is how to update default pattern with
> --include-sparse and --exclude-sparse.

Maybe you could let the core.defaultsparse be defined multiple times.

[core]
        defaultsparse = Documentation/*
        defaultsparse = t/*
        defaultsparse = !t/*svn*

equivalent to

[core]
        defaultsparse = Documentation/*:t/*:!t/*svn*

but it moves the complexity to the parsing of the config.

> Also, people can use "git
> update-index" to update checkout area, which should not touch default
> pattern at all.

I would prefer having a --not-update-sparse-pattern.

The most common workflow should be the most straightforward. The most
common use-case would be somebody working _only_ in some subdirectory
(say Documentation), then what s/he normally does is:

1) cloning and default sparse chechout:
  $ git clone --sparse-checkout=Documentation/* ...
  or within an existing wd
  $ git checkout --reset-sparse=Documentation/* ...
  (maybe just --sparse?)

2) Work normally inside the Documentation directory...

3) Abort a merge with conflicts outside the sparse area:
  $ git reset --hard ORIG_HEAD)
  <Now there are files outside the default sparse area>
  $ git checkout --reset-sparse # with --sparse to set the sparse pattern

Including/excluding more paths in the default sparse checkout is not
something you would do normally, but I think it makes sense to add
them to the default pattern.

Please correct me if you think there are other use-cases, or more
things in my use-case.

> Maybe just throw a warning when default pattern no
> longer matches the checkout area, then let them decide.

Sure, and inform in the "git status" that you are in a sparse checkout.

Best regards,
Santi