From: Denton Liu <liu.denton@gmail.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: Git Mailing List <git@vger.kernel.org>,
Eric Sunshine <sunshine@sunshineco.com>
Subject: Re: [PATCH v2 8/9] stash show: teach --include-untracked and --only-untracked
Date: Mon, 15 Feb 2021 19:15:53 -0800 [thread overview]
Message-ID: <YCs46VzamjuDrQR9@generichostname> (raw)
In-Reply-To: <xmqqa6sc4avx.fsf@gitster.c.googlers.com>
Hi Junio,
On Tue, Feb 09, 2021 at 11:53:06PM -0800, Junio C Hamano wrote:
> > Do this via something like
> >
> > GIT_INDEX_FILE=... git read-tree stash stash^3
> >
> > and diffing the resulting tree object against the stash base.
>
> That explains the implementation, but does not make it clear what
> the implementation wants to achieve. So we read the tree from stash
> (i.e. working tree) into a temporary index, and then overlay the
> tree of stash^3 (i.e. untracked) on top---which means the resulting
> "index" has the state of the working tree plus the untracked cruft
> in it. And comparing that with "stash base" (by the way is that a
> term well understood? I borrowed it for the above review comment,
> which shows that there certainly is need for such a term) would show
I'm not sure if it's a well-understood term but I can't think of any
other meanings for the term so it doesn't seem very ambiguous.
> the diff between the "HEAD" and the state that would have result if
> you were to do an "git add ." in the working tree. OK.
>
> > One improvement that this could use for the future is performing the
> > action without writing anything to disk as one would expect this to be a
> > read-only operation. This can be fixed in the future, however.
>
> Is it so difficult that we have to delay the fix for "the future"?
> After reading two trees into an in-core index, without writing it
> out to any file, all that remains to be done is just a matter of
> running diff-lib.c::do_diff_cache(), no? I must be missing something.q
No, I don't think it's difficult. It's just my inexperience with this
area of the code.
> > Another limitation of this is that it would be possible to manually
> > craft a stash entry where duplicate untracked files in the stash entry
> > will mask tracked files. This seems like an instance of "Doctor, it
> > hurts when I do this! So don't do that!" so this can be written off.
>
> Well, when you read the second tree into the in-core index to
> overlay what you read from the working tree state, you can certainly
> report the collision and error it out.
I'll send out my revised patch later today and I was unable to figure
out an easy way of doing this.
Thanks,
Denton
next prev parent reply other threads:[~2021-02-16 3:16 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-02 9:31 [PATCH 0/9] stash show: learn --include-untracked and --only-untracked Denton Liu
2021-02-02 9:33 ` Denton Liu
2021-02-02 9:33 ` [PATCH 1/9] git-stash.txt: be explicit about subcommand options Denton Liu
2021-02-02 17:37 ` Eric Sunshine
2021-02-02 9:33 ` [PATCH 2/9] t3905: remove spaces after redirect operators Denton Liu
2021-02-02 9:33 ` [PATCH 3/9] t3905: move all commands into test cases Denton Liu
2021-02-02 21:41 ` Junio C Hamano
2021-02-02 9:33 ` [PATCH 4/9] t3905: remove nested git in command substitution Denton Liu
2021-02-02 9:33 ` [PATCH 5/9] t3905: replace test -s with test_file_not_empty Denton Liu
2021-02-02 9:33 ` [PATCH 6/9] t3905: use test_cmp() to check file contents Denton Liu
2021-02-02 9:33 ` [PATCH 7/9] stash: declare ref_stash as an array Denton Liu
2021-02-02 21:46 ` Junio C Hamano
2021-02-02 9:33 ` [PATCH 8/9] stash show: teach --include-tracked and --only-untracked Denton Liu
2021-02-02 21:56 ` Junio C Hamano
2021-02-02 9:33 ` [PATCH 9/9] stash show: learn stash.showIncludeUntracked Denton Liu
2021-02-09 7:28 ` [PATCH v2 0/9] stash show: learn --include-untracked and --only-untracked Denton Liu
2021-02-09 7:28 ` [PATCH v2 1/9] git-stash.txt: be explicit about subcommand options Denton Liu
2021-02-10 7:17 ` Junio C Hamano
2021-02-11 19:07 ` [PATCH] fixup! " Denton Liu
2021-02-09 7:28 ` [PATCH v2 2/9] t3905: remove spaces after redirect operators Denton Liu
2021-02-10 7:18 ` Junio C Hamano
2021-02-09 7:28 ` [PATCH v2 3/9] t3905: move all commands into test cases Denton Liu
2021-02-09 7:28 ` [PATCH v2 4/9] t3905: remove nested git in command substitution Denton Liu
2021-02-10 7:24 ` Junio C Hamano
2021-02-09 7:28 ` [PATCH v2 5/9] t3905: replace test -s with test_file_not_empty Denton Liu
2021-02-09 7:28 ` [PATCH v2 6/9] t3905: use test_cmp() to check file contents Denton Liu
2021-02-09 7:28 ` [PATCH v2 7/9] stash: declare ref_stash as an array Denton Liu
2021-02-10 7:28 ` Junio C Hamano
2021-02-09 7:28 ` [PATCH v2 8/9] stash show: teach --include-untracked and --only-untracked Denton Liu
2021-02-10 7:53 ` Junio C Hamano
2021-02-16 3:15 ` Denton Liu [this message]
2021-02-16 6:42 ` Junio C Hamano
2021-02-09 7:28 ` [PATCH v2 9/9] stash show: learn stash.showIncludeUntracked Denton Liu
2021-02-16 7:11 ` [PATCH v3 0/2] stash show: learn --include-untracked and --only-untracked Denton Liu
2021-02-16 7:11 ` [PATCH v3 1/2] stash show: teach " Denton Liu
2021-02-16 20:22 ` Junio C Hamano
2021-02-17 11:18 ` Denton Liu
2021-02-17 17:50 ` Junio C Hamano
2021-02-17 2:31 ` Junio C Hamano
2021-02-16 7:11 ` [PATCH v3 2/2] stash show: learn stash.showIncludeUntracked Denton Liu
2021-03-03 11:16 ` [PATCH v4 0/2] stash show: learn --include-untracked and --only-untracked Denton Liu
2021-03-03 11:16 ` [PATCH v4 1/2] stash show: teach " Denton Liu
2021-03-03 11:16 ` [PATCH v4 2/2] stash show: learn stash.showIncludeUntracked Denton Liu
2021-03-04 0:38 ` [PATCH v4 0/2] stash show: learn --include-untracked and --only-untracked Junio C Hamano
2021-03-04 1:33 ` Denton Liu
2021-03-04 1:42 ` Denton Liu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YCs46VzamjuDrQR9@generichostname \
--to=liu.denton@gmail.com \
--cc=git@vger.kernel.org \
--cc=gitster@pobox.com \
--cc=sunshine@sunshineco.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.