Re: What's cooking in git.git (Feb 2013, #05; Tue, 12)

2013-02-22 Thread Junio C Hamano
Miles Bader  writes:

> Junio C Hamano  writes:
>>  * Introduce "git add --ignore-removal" option in the release after
>>the current cycle (a new feature is too late for this cycle):
>
> Too late in the cycle even if the option is simply ignored ... ?
>
> [To extend the range of git versions where it's not an error]

I'd feel safer to have enough time to cook the "alleged no-op"
before merging it to 'master' and include it in a release.

Possible implementation mistakes aside, "--ignore-removal" is
probably too long to type, we haven't even discussed if it deserves
a short-and-sweet single letter option, the obvious "-i" is not
available, etc. etc.  I do not think we have a concensus that the
transition plan outlined is a good way to go in the first place.

So, I do think it is a bit too late for this cycle, especially when
we still have doubts about the design. Actually it is *I* who have
doubts; I do not even know if other people share the doubts or they
support the direction wholeheartedly.


--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: What's cooking in git.git (Feb 2013, #05; Tue, 12)

2013-02-22 Thread Miles Bader
Junio C Hamano  writes:
>  * Introduce "git add --ignore-removal" option in the release after
>the current cycle (a new feature is too late for this cycle):

Too late in the cycle even if the option is simply ignored ... ?

[To extend the range of git versions where it's not an error]

-miles

-- 
Kilt, n. A costume sometimes worn by Scotchmen [sic] in America and Americans
in Scotland.
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: What's cooking in git.git (Feb 2013, #05; Tue, 12)

2013-02-18 Thread greened
Junio C Hamano  writes:

> * dg/subtree-fixes (2013-02-05) 6 commits
>   (merged to 'next' on 2013-02-09 at 8f19ebe)
>  + contrib/subtree: make the manual directory if needed
>  + contrib/subtree: honor DESTDIR
>  + contrib/subtree: fix synopsis
>  + contrib/subtree: better error handling for 'subtree add'
>  + contrib/subtree: use %B for split subject/body
>  + contrib/subtree: remove test number comments
>
>  contrib/subtree updates, but here are only the ones that looked
>  ready to be merged to 'next'.  For the remainder, they will have
>  another day.

Great, I've got updates for the rest.

   -David
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: What's cooking in git.git (Feb 2013, #05; Tue, 12)

2013-02-14 Thread Junio C Hamano
Junio C Hamano  writes:

> Andrew Ardill  writes:
>
>>> If that is the change we are going to make, and if you can guarantee
>>> that nobody who is used to the historical behaviour will complain,
>>> then I am fine with it, but I think the latter part of the condition
>>> will not hold.
>>
>> Does the impossibility of asserting that no-one will complain put this
>> in the 'too hard' bucket?
>
> Basically, yes.  "Cannot be done without UI regression."
>
> It could be a Git 2.0 item, if you plan the transition right, though.

I have been staring at the patch again, but I do not think of an
easy way out without retraining the old timers to introduce this "if
we knew better, we would have done so from day one and the world
would have been a much better place" change.  If we were to have
this in the longer term, we would need a proper transition plan,
similar to the one we devised to change the default used for a lazy
"git push" (and "git push $there") from the traditional "matching"
to "simple" at Git 2.0 boundary.

The transition would go like this:

 * Introduce "git add --ignore-removal" option in the release after
   the current cycle (a new feature is too late for this cycle):

   - when "git add " is given without "--ignore-removal",
 give a warning about upcoming default change, and advise people
 to use either "--ignore-removal" or "--all" option, but behave
 as if "--ignore-removal" were given.

   - when "git add --ignore-removal " is given, only add
 additions and modifications, just like the current behaviour.

   - obviously, "-u", "-A", and "--ignore-removal" are mutually
 exclusive.

 * Run with the above for a few releases.

 * Change the behaviour of "git add " without "-u", "-A"
   nor "--ignore-removal" to error out with the same warning and
   advise.

 * Run with the above for a few releases.

 * At Git 2.0, change "git add " without "-u", "-A" nor
   "--ignore-removal" to behave as if "git add -A " were
   given.

At any point during the above transtion, "git add" without any
pathspec will not change its meaning; it will stay a no-op.
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: What's cooking in git.git (Feb 2013, #05; Tue, 12)

2013-02-14 Thread Junio C Hamano
Andrew Ardill  writes:

>> If that is the change we are going to make, and if you can guarantee
>> that nobody who is used to the historical behaviour will complain,
>> then I am fine with it, but I think the latter part of the condition
>> will not hold.
>
> Does the impossibility of asserting that no-one will complain put this
> in the 'too hard' bucket?

Basically, yes.  "Cannot be done without UI regression."

It could be a Git 2.0 item, if you plan the transition right, though.

> The implication here is that a relatively small number of people will
> be inconvenienced by needing to specify extra flags/set up an alias.
> Compare this to the many for whom the expected behaviour is now
> default, and we have a net win.

We take backward compatibility a lot more seriously; it is not even
a democracy.

"Net win" does not mean an iota.  Even if "small number" is 47 and
large majority is 4 million, it does not change the fact that you
are breaking things these 47 people have depended on working in an
expected (the "expected" does not have to be "intuitive" in this
sentence; what counts more is that it is the way they are accustomed
to) way and introducing a UI regression.
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: What's cooking in git.git (Feb 2013, #05; Tue, 12)

2013-02-13 Thread Andrew Ardill
On 14 February 2013 15:36, Junio C Hamano  wrote:
>> That is, currently git add defaults to not staging file deletions, and
>> we provide command line flags to include them. The consensus in the
>> thread is that it is better to stage them by default; it seems
>> reasonable to me that if we stage deletions by default we should
>> provide flags to _not_ stage them. If that was the entirety of the
>> change, would your position from that thread, "if we need this
>> optional, then it is not worth doing this", still hold?
>
> If that is the change we are going to make, and if you can guarantee
> that nobody who is used to the historical behaviour will complain,
> then I am fine with it, but I think the latter part of the condition
> will not hold.

Does the impossibility of asserting that no-one will complain put this
in the 'too hard' bucket?

>> Some people would be adversely affected by this change, but any
>> objections I can come up with are not game stoppers.
>> - It is possible newcomers might stumble at deleted files being staged
>> for commit by a command called 'add',...
>
> New people are fair game; we haven't trained them with the
> "inconsistent" behaviour, and the default being different from
> historical behaviour will not affect them adversely.
>
>> - For people who rely heavily on file deletions remaining out of the
>> index, providing a flag allows them to keep their workflow.
>
> Allowing to do the things they used to be able to do is a bare
> minimum.  You are still forcing them to do things differently.

The implication here is that a relatively small number of people will
be inconvenienced by needing to specify extra flags/set up an alias.
Compare this to the many for whom the expected behaviour is now
default, and we have a net win.

>> Finally, making this change makes sense from a consistency point of
>> view.
>
> That is a given. Otherwise we wouldn't be even discussing this.

Obviously I agree. I was actually bringing up a point about patch mode
and it got incorporated into the bigger picture; patch mode includes
deletions by default and I don't even know if you can turn that
behaviour off. So, when we talk about git add -u and git add -A, we
should also mention git add -p.

Regards,

Andrew Ardill
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: What's cooking in git.git (Feb 2013, #05; Tue, 12)

2013-02-13 Thread Junio C Hamano
Andrew Ardill  writes:

>> We've discussed that before.
>>
>> http://thread.gmane.org/gmane.comp.version-control.git/171811/focus=171818
>
> Something that I couldn't find discussed was the option of, rather
> than providing a config to 'turn it off', inverting the current
> default/flags combo.
>
> That is, currently git add defaults to not staging file deletions, and
> we provide command line flags to include them. The consensus in the
> thread is that it is better to stage them by default; it seems
> reasonable to me that if we stage deletions by default we should
> provide flags to _not_ stage them. If that was the entirety of the
> change, would your position from that thread, "if we need this
> optional, then it is not worth doing this", still hold?

If that is the change we are going to make, and if you can guarantee
that nobody who is used to the historical behaviour will complain,
then I am fine with it, but I think the latter part of the condition
will not hold.

> Some people would be adversely affected by this change, but any
> objections I can come up with are not game stoppers.
> - It is possible newcomers might stumble at deleted files being staged
> for commit by a command called 'add',...

New people are fair game; we haven't trained them with the
"inconsistent" behaviour, and the default being different from
historical behaviour will not affect them adversely.

> - For people who rely heavily on file deletions remaining out of the
> index, providing a flag allows them to keep their workflow.

Allowing to do the things they used to be able to do is a bare
minimum.  You are still forcing them to do things differently.

> - For scripts that rely on this behaviour, a flag allows it to be
> updated, though it may break in the meantime.

Likewise.

> Finally, making this change makes sense from a consistency point of
> view.

That is a given. Otherwise we wouldn't be even discussing this.
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: What's cooking in git.git (Feb 2013, #05; Tue, 12)

2013-02-13 Thread Andrew Ardill
On 14 February 2013 02:27, Junio C Hamano  wrote:
>> If we need to support this behaviour than I would suppose a config
>> option is required. A default config transition path similar to git
>> push defaults would probably work well, in the case where breaking
>> these expectations is unacceptable.
>
> We've discussed that before.
>
> http://thread.gmane.org/gmane.comp.version-control.git/171811/focus=171818

Something that I couldn't find discussed was the option of, rather
than providing a config to 'turn it off', inverting the current
default/flags combo.

That is, currently git add defaults to not staging file deletions, and
we provide command line flags to include them. The consensus in the
thread is that it is better to stage them by default; it seems
reasonable to me that if we stage deletions by default we should
provide flags to _not_ stage them. If that was the entirety of the
change, would your position from that thread, "if we need this
optional, then it is not worth doing this", still hold?

Some people would be adversely affected by this change, but any
objections I can come up with are not game stoppers.
- It is possible newcomers might stumble at deleted files being staged
for commit by a command called 'add', but if they can already grok the
concept of staging then including deletions in that is trivial. If
they don't understand staging then we have a different issue.
- For people who rely heavily on file deletions remaining out of the
index, providing a flag allows them to keep their workflow. No data
would be lost, and most accidents would be easily recoverable.
- For scripts that rely on this behaviour, a flag allows it to be
updated, though it may break in the meantime. (I would presume that
not many of these scripts exist in the first place, but I don't really
know)

Finally, making this change makes sense from a consistency point of
view. For example, we don't track file renames because (and I
paraphrase) we can work that out from the content that is moved.
However if I rename a file and then 'git add .' I see that a new file
is added, not that it has been renamed! Manually adding the deletion
to the index causes git to correctly detect the rename, however this
is unintuitive and not consistent with how git works and is
communicated in general.

Git add is also inconsistent with git add -p (although that might be
due to unclear documentation for -p). When in patch mode, git add will
propose deletions get added to the index as well, not just additions
and modifications.

Regards,

Andrew Ardill
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: What's cooking in git.git (Feb 2013, #05; Tue, 12)

2013-02-13 Thread Junio C Hamano
Andrew Ardill  writes:

> On 13 February 2013 11:34, Junio C Hamano  wrote:
>> The change could negatively affect people who expect that removing
>> files that are not used for their purpose (e.g. a large file that is
>> unnecessary for their build) will _not_ affect what they get from
>> "git add .";
>
> How big a problem is this?

As you said below, it could be fairly big, if you expect a lot of
people do not use "git add -u".

> If we need to support this behaviour than I would suppose a config
> option is required. A default config transition path similar to git
> push defaults would probably work well, in the case where breaking
> these expectations is unacceptable.

We've discussed that before.

http://thread.gmane.org/gmane.comp.version-control.git/171811/focus=171818

>> obviously they must have trained themselves not to do
>> "git add -u" or "git commit -a".
>
> Many people use git add -p by default, so I would not be surprised
> about people not using -u or -a.
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: What's cooking in git.git (Feb 2013, #05; Tue, 12)

2013-02-12 Thread Andrew Ardill
On 13 February 2013 11:34, Junio C Hamano  wrote:
> The change could negatively affect people who expect that removing
> files that are not used for their purpose (e.g. a large file that is
> unnecessary for their build) will _not_ affect what they get from
> "git add .";

How big a problem is this?

If we need to support this behaviour than I would suppose a config
option is required. A default config transition path similar to git
push defaults would probably work well, in the case where breaking
these expectations is unacceptable.

> obviously they must have trained themselves not to do
> "git add -u" or "git commit -a".

Many people use git add -p by default, so I would not be surprised
about people not using -u or -a.

Regards,

Andrew Ardill
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: What's cooking in git.git (Feb 2013, #05; Tue, 12)

2013-02-12 Thread Junio C Hamano
Andrew Ardill  writes:

> On 13 February 2013 11:06, Junio C Hamano  wrote:
>> * jc/add-delete-default (2012-08-13) 1 commit
>>  - git add: notice removal of tracked paths by default
>>
>>  "git add dir/" updated modified files and added new files, but does
>>  not notice removed files, which may be "Huh?" to some users.  They
>>  can of course use "git add -A dir/", but why should they?
>>
>>  Resurrected from graveyard, as I thought it was a worthwhile thing
>>  to do in the longer term.
>>
>>  Stalled mostly due to lack of responses.
>
> What do you need to progress this?
>
> I have been bitten by this before (the 'huh?' reaction) and think the
> previous discussions and patch look reasonable. Does it need testing?

I _think_ the code does what it claims it does; I do not think that
is what is lacking (more testing would not _hurt_, of course).

> Further input??

The updated behaviour is a departure from the traditional norm, and
it would surprise people who do not expect "git add ." to update the
index for removed paths.  For many of them, it may be a pleasant
surprise, but "many" is not "all".

The change could negatively affect people who expect that removing
files that are not used for their purpose (e.g. a large file that is
unnecessary for their build) will _not_ affect what they get from
"git add ."; obviously they must have trained themselves not to do
"git add -u" or "git commit -a".

--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: What's cooking in git.git (Feb 2013, #05; Tue, 12)

2013-02-12 Thread Andrew Ardill
On 13 February 2013 11:06, Junio C Hamano  wrote:
> * jc/add-delete-default (2012-08-13) 1 commit
>  - git add: notice removal of tracked paths by default
>
>  "git add dir/" updated modified files and added new files, but does
>  not notice removed files, which may be "Huh?" to some users.  They
>  can of course use "git add -A dir/", but why should they?
>
>  Resurrected from graveyard, as I thought it was a worthwhile thing
>  to do in the longer term.
>
>  Stalled mostly due to lack of responses.

What do you need to progress this?

I have been bitten by this before (the 'huh?' reaction) and think the
previous discussions and patch look reasonable. Does it need testing?
Further input??

Regards,

Andrew Ardill
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: jn/shell-disable-interactive (Re: What's cooking in git.git (Feb 2013, #05; Tue, 12))

2013-02-12 Thread Junio C Hamano
Jonathan Nieder  writes:

> Junio C Hamano wrote:
>
>> * jn/shell-disable-interactive (2013-02-11) 2 commits
>>  - shell: pay attention to exit status from 'help' command
>>  - shell doc: emphasize purpose and security model
>>
>>  Will merge to 'next'.
>
> Please hold off on merging the second patch.  I'd like to reroll
> renaming the command to 'no-interactive-login' or some such, which
> would be less disruptive to existing setups and should be easier to
> explain.

Thanks; that sounds like a sensible and safer change.
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html


jn/shell-disable-interactive (Re: What's cooking in git.git (Feb 2013, #05; Tue, 12))

2013-02-12 Thread Jonathan Nieder
Junio C Hamano wrote:

> * jn/shell-disable-interactive (2013-02-11) 2 commits
>  - shell: pay attention to exit status from 'help' command
>  - shell doc: emphasize purpose and security model
>
>  Will merge to 'next'.

Please hold off on merging the second patch.  I'd like to reroll
renaming the command to 'no-interactive-login' or some such, which
would be less disruptive to existing setups and should be easier to
explain.

Thanks,
Jonathan
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html