Deprecation/Removal schedule

Deprecation/Removal schedule

[Junio C Hamano]

We seem to have accumulated some crufts, duplicated and/or
disused features.  I think we should start planning deprecation
and removal.

Here are potential candidates we might want to mark as
"scheduled for removal".  Note that I threw in a bit more than
what I seriously consider bloat, so your favorite may appear in
the list.

* git-applymbox and git-applypatch

  Does anybody rely on them?  I think new users are all using
  git-am (this is just what _I_ think -- please consider this
  message as a poll to voice your objection).

* git-whatchanged

  This has been identical to git-log with different default
  options.

* git-p4import, git-quiltimport and contrib/gitview

  These have seen almost no activity since their appearance.  It
  could be that they are already perfect and many people are
  using them happily, but I find it a bit hard to believe.

* git-diff-stages

  Judging from the fact that nobody complained what it does is
  not accessible from "git diff" wrapper, I suspect nobody is
  interested in comparing the stages while merging (I certainly
  do not use it myself).

* git-lost-found

  Although it has served us well, I think it is about to outlive
  its usefulness, thanks to the recent "reflog by default"
  change.

* git-local-fetch, git-ssh-fetch and git-ssh-upload

  In-tree git-fetch does not use these commit walkers as the
  backend.  They might be used by Cogito and people's scripts so
  I am not seriously pushing for their removal.  http-fetch is
  here to stay so it's not like removing them would reduce the
  burden to maintain the commit walkers anyway.

* contrib/colordiff

  This has long outlived its usefulness.

Re: Deprecation/Removal schedule

[Shawn O. Pearce]

Junio C Hamano <junkio@cox.net> wrote:
> We seem to have accumulated some crufts, duplicated and/or
> disused features.  I think we should start planning deprecation
> and removal.
> 
> Here are potential candidates we might want to mark as
> "scheduled for removal".  Note that I threw in a bit more than
> what I seriously consider bloat, so your favorite may appear in
> the list.

I'm OK with everything on the list going away.  But that's because
I don't ever use them.  :)

I'd think we also want to remove the following older aliases:

  annotate
  init-db
  fsck-objects
  repo-config

1 year after 1.5.0 final ships.  That should give people a chance
to upgrade their other tools (StGit, qgit, etc.).

-- 
Shawn.

Re: Deprecation/Removal schedule

[Jakub Narebski]

Junio C Hamano wrote:

> We seem to have accumulated some crufts, duplicated and/or
> disused features.  I think we should start planning deprecation
> and removal.
> 
> Here are potential candidates we might want to mark as
> "scheduled for removal".  Note that I threw in a bit more than
> what I seriously consider bloat, so your favorite may appear in
> the list.
> 
> * git-applymbox and git-applypatch
> 
>   Does anybody rely on them?  I think new users are all using
>   git-am (this is just what _I_ think -- please consider this
>   message as a poll to voice your objection).

If I remember correctly there are here because Linus is used to
their interface and prefers git-applymbox to git-am. I'm not sure
for example if git-am --interactive is on the par of git-applymbox -q
option (BTW. if we remove git-applymbox, we would have to remove
reference to it in git-am(1): "--interactive: Run interactively,
just like git-applymbox"). git-am also lack all git-applymbox
signoff options.

> * git-whatchanged
> 
>   This has been identical to git-log with different default
>   options.

I agree. Perhaps we should add in the documentation of git-log,
or/and in documentation of git-config, an example of "whatchanged"
alias...

> * git-p4import, git-quiltimport and contrib/gitview
> 
>   These have seen almost no activity since their appearance.  It
>   could be that they are already perfect and many people are
>   using them happily, but I find it a bit hard to believe.

I agree with removal of gitview; I'd rather leave importers, even
if they haven's seen any activity. If they import correctly, what
is to work on more?

> * git-diff-stages
> 
>   Judging from the fact that nobody complained what it does is
>   not accessible from "git diff" wrapper, I suspect nobody is
>   interested in comparing the stages while merging (I certainly
>   do not use it myself).

I think you can always use "git diff <stage1>:<file> <stage2>:<file>".
I'm not sure if it is useful or not (perhaps it is not advertised).

> * git-lost-found
> 
>   Although it has served us well, I think it is about to outlive
>   its usefulness, thanks to the recent "reflog by default"
>   change.

I agree. If it is needed, perhaps this functionality should be made
as an option to git-fsck.

> * contrib/colordiff
> 
>   This has long outlived its usefulness.

I agree.

-- 
Jakub Narebski
Warsaw, Poland
ShadeHawk on #git

Re: Deprecation/Removal schedule

[Jakub Narebski]

Jakub Narebski wrote:

> Junio C Hamano wrote:

>> * git-p4import, git-quiltimport and contrib/gitview
>> 
>>   These have seen almost no activity since their appearance.  It
>>   could be that they are already perfect and many people are
>>   using them happily, but I find it a bit hard to believe.
> 
> I agree with removal of gitview; I'd rather leave importers, even
> if they haven's seen any activity. If they import correctly, what
> is to work on more?

An alternative for importers would be to move them into contrib area
(I think unmaintained but not obsolete programs can be there in contrib).
-- 
Jakub Narebski
Warsaw, Poland
ShadeHawk on #git

Re: Deprecation/Removal schedule

[Shawn O. Pearce]

Jakub Narebski <jnareb@gmail.com> wrote:
> An alternative for importers would be to move them into contrib area
> (I think unmaintained but not obsolete programs can be there in contrib).

Sure, but we don't want to promote carrying around unmaintained
programs in core Git.  Its additional code which must still be
tested or fixed when changes get made, like the final removal of
the fsck-objects alias.  Hence, its never really unmaintained...
someone must do the work.

Having a maintainer means there are one or more persons in the
community who are making sure that chunk of code stays current
when changes are made, and bugs are being fixed when identified.
It also implies the code has some use, as it is unreasonable to
expect a maintainer to invest time in something which has no value.

Things that are really central in Git have at least 3 or 4
maintainers who seem to rotate the workload fairly well.  But as
you get closer to the outer (higher) layers it seems to fall on
Junio and a much smaller group.  I'd hate to see Junio spend lots
of time working on things nobody uses.

Importers are especially problematic.  They aren't the most
heavily used programs, as people tend to convert to Git once and
then don't look back.  But they are also one of the first things a
user has experience with as they testdrive Git on a copy of their
own project.  So any importers we ship `out of the box' need to
Just Work Danngit(tm).  Unfortunately they are also get the least
amount of testing.

-- 
Shawn.

Re: Deprecation/Removal schedule

[Mark Wooding]

Junio C Hamano <junkio@cox.net> wrote:

> * git-whatchanged

My fingers still type `whatchanged', but I can train them.  Besides, it
could easily be done with an alias.

> * git-p4import

I may have a use for p4import, if the company I work for switches to
Perforce.  If it doesn't work, I'll probably end up fixing it or
replacing it with something based on Shawn's fastimport, but either way
I'm not sure it's dead yet.

-- [mdw]

Re: Deprecation/Removal schedule

[Johannes Schindelin]

Hi,

On Sun, 4 Feb 2007, Junio C Hamano wrote:

> * git-whatchanged
> 
>   This has been identical to git-log with different default
>   options.

Would it really be so bad if we just kept this alias indefinitely? We can 
stop advertising it, but it is not expensive to carry that small part of 
the code around.

Same goes for repo-config, fsck-objects, init-db.

Ciao,
Dscho

Re: Deprecation/Removal schedule

[Alex Riesen]

On 2/5/07, Jakub Narebski <jnareb@gmail.com> wrote:
> Junio C Hamano wrote:
>
> > * git-lost-found
> >
> >   Although it has served us well, I think it is about to outlive
> >   its usefulness, thanks to the recent "reflog by default"
> >   change.
>
> I agree. If it is needed, perhaps this functionality should be made
> as an option to git-fsck.
>

I have reflog off by default (and never missed it yet), so leave it
at least as option to git-fsck, please. Besides, how do you find
lost objects which were not mentioned in any reflog? (because
of a bug someone made in reflog code, for example)

Re: Deprecation/Removal schedule

[Alex Riesen]

On 2/5/07, Junio C Hamano <junkio@cox.net> wrote:
> * git-p4import, git-quiltimport and contrib/gitview
>
>   These have seen almost no activity since their appearance.  It
>   could be that they are already perfect and many people are
>   using them happily, but I find it a bit hard to believe.

Why not leave the importers as examples?
They could be useful to someone.

Re: Deprecation/Removal schedule

[Linus Torvalds]

On Sun, 4 Feb 2007, Junio C Hamano wrote:
> 
> * git-whatchanged
> 
>   This has been identical to git-log with different default
>   options.

Somebody should at least document the differences before it's depracated.

I think git-whatchanged ends up being equivalent to

	git log --full-history --raw -r

but I didn't really check if there's something else.

Same goes for "git-am". I use "git-applymbox", and I'll happily switch to 
git-am, but I'd like somebody who knows to document the differences when 
it gets deprecated. I use "git-applymbox -u", and I guess I just should 
change that to "git-am --utf8".

> * git-p4import, git-quiltimport and contrib/gitview
> 
>   These have seen almost no activity since their appearance.  It
>   could be that they are already perfect and many people are
>   using them happily, but I find it a bit hard to believe.

I think they're useful to keep around, if for no other reason than as 
starting points for others.

That said, I probably agree with your other examples:

> * git-diff-stages
> * git-lost-found
> * git-local-fetch, git-ssh-fetch and git-ssh-upload
> * contrib/colordiff

Although the git-ssh-fetch thing might be useful if you try to fix a tree 
that got corrupted and is missing an object (the native git protocol won't 
help you, since it assumes both trees are complete, while the stupid 
object fetching can pick out individual missing objects, I think).

That said, I don't think anybody would really ever fix their trees that 
way. It's more likely that you'd just fetch the whole repo and add the 
missing objects that way (ie do a clone, copy the pack-file, and repack 
the resulting mess to get a nice clean and working repository again).

		Linus

Re: Deprecation/Removal schedule

[Junio C Hamano]

Linus Torvalds <torvalds@linux-foundation.org> writes:

> Same goes for "git-am". I use "git-applymbox", and I'll happily switch to 
> git-am, but I'd like somebody who knows to document the differences when 
> it gets deprecated. I use "git-applymbox -u", and I guess I just should 
> change that to "git-am --utf8".

True; by the way, for "am", -u is the default these days by
popular demand.  I do not offhand remember if "applymbox" got
corresponding changes (I think it did).

>> * git-p4import, git-quiltimport and contrib/gitview
>> 
>>   These have seen almost no activity since their appearance.  It
>>   could be that they are already perfect and many people are
>>   using them happily, but I find it a bit hard to believe.
>
> I think they're useful to keep around, if for no other reason than as 
> starting points for others.

I strongly agree with the starting-points arguments.  I was
hoping to hear the list to form a consensus to move useful
starting-point examples to contrib/.

[PATCH] Add --patchdepth parameter to git-am.sh

[Andy Parkins]

If the series of patches you are applying via git-am was based in a
different directory there was no way to strip the directory (as you
would with git-apply).

This patch adds a --patchdepth option to git-am.sh whose argument is
passed as a "-p" option to git-apply.

Signed-off-by: Andy Parkins <andyparkins@gmail.com>
---
I know git-apply isn't going anywhere, but git-applypatch is.  However, all
this talk of it made me remember this patch.

 git-am.sh |   13 ++++++++-----
 1 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/git-am.sh b/git-am.sh
index 1252f26..cb503fc 100755
--- a/git-am.sh
+++ b/git-am.sh
@@ -60,7 +60,7 @@ fall_back_3way () {
     mkdir "$dotest/patch-merge-tmp-dir"
 
     # First see if the patch records the index info that we can use.
-    git-apply -z --index-info "$dotest/patch" \
+    git-apply $patchdepth -z --index-info "$dotest/patch" \
 	>"$dotest/patch-merge-index-info" &&
     GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
     git-update-index -z --index-info <"$dotest/patch-merge-index-info" &&
@@ -70,7 +70,7 @@ fall_back_3way () {
 
     echo Using index info to reconstruct a base tree...
     if GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
-	git-apply $binary --cached <"$dotest/patch"
+	git-apply $patchdepth $binary --cached <"$dotest/patch"
     then
 	mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
 	mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
@@ -106,7 +106,7 @@ It does not apply to blobs recorded in its index."
 }
 
 prec=4
-dotest=.dotest sign= utf8=t keep= skip= interactive= resolved= binary= ws= resolvemsg=
+dotest=.dotest sign= utf8=t keep= skip= interactive= resolved= binary= ws= resolvemsg= patchdepth=
 
 while case "$#" in 0) break;; esac
 do
@@ -147,6 +147,9 @@ do
 	--resolvemsg=*)
 	resolvemsg=$(echo "$1" | sed -e "s/^--resolvemsg=//"); shift ;;
 
+	--patchdepth=*)
+	patchdepth=-p$(echo "$1" | sed -e "s/^--patchdepth=//"); shift ;;
+
 	--)
 	shift; break ;;
 	-*)
@@ -389,12 +392,12 @@ do
 	fi
 
 	echo
-	echo "Applying '$SUBJECT'"
+	echo "Applying '$SUBJECT' at depth $patchdepth"
 	echo
 
 	case "$resolved" in
 	'')
-		git-apply $binary --index $ws "$dotest/patch"
+		git-apply $patchdepth $binary --index $ws "$dotest/patch"
 		apply_status=$?
 		;;
 	t)
-- 
1.5.0.rc1.gf4b6c

Re: [PATCH] Add --patchdepth parameter to git-am.sh

[Shawn O. Pearce]

Andy Parkins <andyparkins@gmail.com> wrote:
> If the series of patches you are applying via git-am was based in a
> different directory there was no way to strip the directory (as you
> would with git-apply).
> 
> This patch adds a --patchdepth option to git-am.sh whose argument is
> passed as a "-p" option to git-apply.

Is there something wrong with -p<n>?  Looking at git-am, -p is not
currently accepted as an option.  Its universally considered the
depth parameter to standard `patch`, which is why git-apply also
accepts it over --patchdepth.

I'd rather see git-am use the same arguments (when possible)
as git-apply.

-- 
Shawn.

Re: Deprecation/Removal schedule

[Shawn O. Pearce]

Alex Riesen <raa.lkml@gmail.com> wrote:
> I have reflog off by default (and never missed it yet), so leave it
> at least as option to git-fsck, please. Besides, how do you find
> lost objects which were not mentioned in any reflog? (because
> of a bug someone made in reflog code, for example)

Learn to love reflog.  :-)

I use it daily.  Mainly `git log origin/master@{1}..origin/master`
to see what has come in from Junio since my last fetch.  The @{n}
syntax has (for me) been one of its best features.  (Thanks Junio!)

Repeat after me:

  There aren't any bugs in the reflog code.
  They have not been any bugs in the reflog code.
  There will never be any bugs in the reflog code.

I don't think we've had a case where a commit wasn't recorded in
a reflog when it should have been.  Perhaps *very* early in reflog
development a couple of commands bypassed the reflog code, but that
has certainly since been fixed.  The last one was git-receive-pack,
which we finished in early December.

If the reflog code did fail to record something, and you needed it,
and you hadn't git-prune'd yet, git-fsck would list the dangling
commit.  And a copy-n-paste session with `git-log -p D --not --all`
in another xterm would help you navigate what the dangling commits
were.

-- 
Shawn.

Re: Deprecation/Removal schedule

[Alex Riesen]

On 2/5/07, Shawn O. Pearce <spearce@spearce.org> wrote:
> I use it daily.  Mainly `git log origin/master@{1}..origin/master`
> to see what has come in from Junio since my last fetch.  The @{n}
> syntax has (for me) been one of its best features.  (Thanks Junio!)

It looks and smells like a useful feature. I just haven't found
any use for it yet. Besides all the good, it's another part of a repo
needing maintenance (constantly growing thing, like /var/log).

> If the reflog code did fail to record something, and you needed it,
> and you hadn't git-prune'd yet, git-fsck would list the dangling
> commit.  And a copy-n-paste session with `git-log -p D --not --all`
> in another xterm would help you navigate what the dangling commits
> were.

Yes, of course. I somehow missed it. Shows how often one does
git-fsck in cygwin, doesn't it?

Re: Deprecation/Removal schedule

[Shawn O. Pearce]

Alex Riesen <raa.lkml@gmail.com> wrote:
> On 2/5/07, Shawn O. Pearce <spearce@spearce.org> wrote:
> >I use it daily.  Mainly `git log origin/master@{1}..origin/master`
> >to see what has come in from Junio since my last fetch.  The @{n}
> >syntax has (for me) been one of its best features.  (Thanks Junio!)
> 
> It looks and smells like a useful feature. I just haven't found
> any use for it yet. Besides all the good, it's another part of a repo
> needing maintenance (constantly growing thing, like /var/log).

`git gc` is your friend.  It automatically trims the reflogs, keeping
only the last 90 days worth of entries.  You can tune this with the
`gc.reflogexpire` configuration parameter.  Seeing as how `git gc`
also invokes `git repack -a -d`, `git pack-refs --prune`, etc.,
one would have to wonder why use anything else.

So its not a constantly growing thing; you can at least bound it
by time.
 
> >If the reflog code did fail to record something, and you needed it,
> >and you hadn't git-prune'd yet, git-fsck would list the dangling
> >commit.  And a copy-n-paste session with `git-log -p D --not --all`
> >in another xterm would help you navigate what the dangling commits
> >were.
> 
> Yes, of course. I somehow missed it. Shows how often one does
> git-fsck in cygwin, doesn't it?

:-)

Actually I have need for git-fsck too often on Cygwin; one of
my coworkers looses objects all of the time in his repository.
I think his harddrive is failed.  The zlib CRC checking we put into
pack-objects saved his bacon when it failed to repack his repository
with corrupt objects.

-- 
Shawn.

Re: Deprecation/Removal schedule

[Alex Riesen]

On 2/5/07, Shawn O. Pearce <spearce@spearce.org> wrote:
> Alex Riesen <raa.lkml@gmail.com> wrote:
> > On 2/5/07, Shawn O. Pearce <spearce@spearce.org> wrote:
> > >I use it daily.  Mainly `git log origin/master@{1}..origin/master`
> > >to see what has come in from Junio since my last fetch.  The @{n}
> > >syntax has (for me) been one of its best features.  (Thanks Junio!)
> >
> > It looks and smells like a useful feature. I just haven't found
> > any use for it yet. Besides all the good, it's another part of a repo
> > needing maintenance (constantly growing thing, like /var/log).
>
> `git gc` is your friend.  It automatically trims the reflogs, keeping
> only the last 90 days worth of entries.  You can tune this with the
> `gc.reflogexpire` configuration parameter.

git gc (repack -d of it) is too dangerous in a shared repo: it breaks
the repos which depend on the master repository, have sent (by some
means) some objects over to the master, and accidentally removed
the reference, and were pruned afterwards.
I'm not saying git gc is bad, I'm just saying you can't use it
whenever and wherever you want. Sometimes you'd prefer
to only expire logs, only pack refs or only repack. And if I
have no logs, I can't forget to trim them.

> So its not a constantly growing thing; you can at least bound it
> by time.

No, I can't. git gc and reflog --expire can. I have to call them.
And I don't think trimming the logs automatically is a good
idea: 90 days of commits can be a very long file on a busy repository.
Add to that slow disks and stupid OS (the worst case, which matters),
and you get a very annoyed user (if he was just angry before, having
to use the drive and OS, he'll definitely go berserk now).

> > >If the reflog code did fail to record something, and you needed it,
> > >and you hadn't git-prune'd yet, git-fsck would list the dangling
> > >commit.  And a copy-n-paste session with `git-log -p D --not --all`
> > >in another xterm would help you navigate what the dangling commits
> > >were.
> >
> > Yes, of course. I somehow missed it. Shows how often one does
> > git-fsck in cygwin, doesn't it?
>
> :-)
>
> Actually I have need for git-fsck too often on Cygwin; one of
> my coworkers looses objects all of the time in his repository.
> I think his harddrive is failed.  The zlib CRC checking we put into
> pack-objects saved his bacon when it failed to repack his repository
> with corrupt objects.

Never had that, can be hardware problem.

What I meant is that it takes too long and I just avoid running
fsck unless I am forced to.

Re: Deprecation/Removal schedule

[Johannes Schindelin]

Hi,

On Tue, 6 Feb 2007, Alex Riesen wrote:

> On 2/5/07, Shawn O. Pearce <spearce@spearce.org> wrote:
> > Alex Riesen <raa.lkml@gmail.com> wrote:
> > > On 2/5/07, Shawn O. Pearce <spearce@spearce.org> wrote:
> > > >I use it daily.  Mainly `git log origin/master@{1}..origin/master`
> > > >to see what has come in from Junio since my last fetch.  The @{n}
> > > >syntax has (for me) been one of its best features.  (Thanks Junio!)
> > >
> > > It looks and smells like a useful feature. I just haven't found
> > > any use for it yet. Besides all the good, it's another part of a repo
> > > needing maintenance (constantly growing thing, like /var/log).
> > 
> > `git gc` is your friend.  It automatically trims the reflogs, keeping
> > only the last 90 days worth of entries.  You can tune this with the
> > `gc.reflogexpire` configuration parameter.
> 
> git gc (repack -d of it) is too dangerous in a shared repo: it breaks
> the repos which depend on the master repository, have sent (by some
> means) some objects over to the master, and accidentally removed
> the reference, and were pruned afterwards.

We no longer call git-prune automatically in git-gc. You have to say 
"git-gc --prune" to trigger that behaviour.

Happy?

Ciao,
Dscho

Re: Deprecation/Removal schedule

[Jeff King]

On Tue, Feb 06, 2007 at 11:45:24AM +0100, Johannes Schindelin wrote:

> > git gc (repack -d of it) is too dangerous in a shared repo: it breaks
> > the repos which depend on the master repository, have sent (by some
> > means) some objects over to the master, and accidentally removed
> > the reference, and were pruned afterwards.
> 
> We no longer call git-prune automatically in git-gc. You have to say 
> "git-gc --prune" to trigger that behaviour.

repack -d can lose objects, too:

# fully packed test repo with 2 commits
mkdir repo && cd repo
git init
touch foo
git add foo
git commit -m foo
echo bar >foo
git commit -a -m bar
git repack -a -d

# remember the latest commit
commit=`git rev-parse HEAD`

# now make it dangling
git reset --hard HEAD^
sleep 1
git reflog expire --expire=0 HEAD refs/heads/master

# now repack
git repack -a -d

# and it's gone
git-show $commit

-Peff

Re: Deprecation/Removal schedule

[Johannes Schindelin]

Hi,

On Tue, 6 Feb 2007, Jeff King wrote:

> On Tue, Feb 06, 2007 at 11:45:24AM +0100, Johannes Schindelin wrote:
> 
> > > git gc (repack -d of it) is too dangerous in a shared repo: it breaks
> > > the repos which depend on the master repository, have sent (by some
> > > means) some objects over to the master, and accidentally removed
> > > the reference, and were pruned afterwards.
> > 
> > We no longer call git-prune automatically in git-gc. You have to say 
> > "git-gc --prune" to trigger that behaviour.
> 
> repack -d can lose objects, too:
> 
> # fully packed test repo with 2 commits
> mkdir repo && cd repo
> git init
> touch foo
> git add foo
> git commit -m foo
> echo bar >foo
> git commit -a -m bar
> git repack -a -d
> 
> # remember the latest commit
> commit=`git rev-parse HEAD`
> 
> # now make it dangling
> git reset --hard HEAD^

This is the culprit.

The solution is very easy: do not --reference a repository which resets or 
deletes branches. IMHO this is all too obvious.

Ciao,
Dscho

Re: Deprecation/Removal schedule

[Alex Riesen]

On 2/6/07, Johannes Schindelin <Johannes.Schindelin@gmx.de> wrote:
> > >
> > > `git gc` is your friend.  It automatically trims the reflogs, keeping
> > > only the last 90 days worth of entries.  You can tune this with the
> > > `gc.reflogexpire` configuration parameter.
> >
> > git gc (repack -d of it) is too dangerous in a shared repo: it breaks
> > the repos which depend on the master repository, have sent (by some
> > means) some objects over to the master, and accidentally removed
> > the reference, and were pruned afterwards.
>
> We no longer call git-prune automatically in git-gc. You have to say
> "git-gc --prune" to trigger that behaviour.

no. You'd have to stop calling repack as well.

I mean the objects that generally have to be removed and just
accidentally was not pinned in the shared repo.
Or did you mean that repack will leave unreferenced objects
behind in objects/??/files?

Re: Deprecation/Removal schedule

[Alex Riesen]

On 2/6/07, Johannes Schindelin <Johannes.Schindelin@gmx.de> wrote:
> > > > git gc (repack -d of it) is too dangerous in a shared repo: it breaks
> > > > the repos which depend on the master repository, have sent (by some
> > > > means) some objects over to the master, and accidentally removed
> > > > the reference, and were pruned afterwards.
> > >
> > > We no longer call git-prune automatically in git-gc. You have to say
> > > "git-gc --prune" to trigger that behaviour.
> >
> > repack -d can lose objects, too:
> >
> > # fully packed test repo with 2 commits
>
> This is the culprit.
>
> The solution is very easy: do not --reference a repository which resets or
> deletes branches. IMHO this is all too obvious.
>

Or just do no repack in the referenced repo.

Anyway, the discussion outlived its usefulness.
I have what I wanted (git fsck --unreachable), and nobody can force
me to repack my shared repo, so the issue does not exist for the original
poster.

Re: Deprecation/Removal schedule

[Johannes Schindelin]

Hi,

On Tue, 6 Feb 2007, Alex Riesen wrote:

> On 2/6/07, Johannes Schindelin <Johannes.Schindelin@gmx.de> wrote:
> > > > > git gc (repack -d of it) is too dangerous in a shared repo: it breaks
> > > > > the repos which depend on the master repository, have sent (by some
> > > > > means) some objects over to the master, and accidentally removed
> > > > > the reference, and were pruned afterwards.
> > > >
> > > > We no longer call git-prune automatically in git-gc. You have to say
> > > > "git-gc --prune" to trigger that behaviour.
> > >
> > > repack -d can lose objects, too:
> > >
> > > # fully packed test repo with 2 commits
> > 
> > This is the culprit.
> > 
> > The solution is very easy: do not --reference a repository which resets or
> > deletes branches. IMHO this is all too obvious.
> > 
> 
> Or just do no repack in the referenced repo.

That is not the solution.

The error in your setup is to _rely_ on data which just _might go away_!

IOW do _not_ use an unreliable repository for --reference!

> Anyway, the discussion outlived its usefulness.
> I have what I wanted (git fsck --unreachable), and nobody can force
> me to repack my shared repo, so the issue does not exist for the original
> poster.

Well, I think unless you understand that you do something really fragile, 
the discussion did not yet outlive its usefulness.

Ciao,
Dscho

Re: Deprecation/Removal schedule

[Alex Riesen]

On 2/6/07, Johannes Schindelin <Johannes.Schindelin@gmx.de> wrote:
> > Or just do no repack in the referenced repo.
>
> That is not the solution.
>
> The error in your setup is to _rely_ on data which just _might go away_!

The data cannot "just" go away. I'll have to "go the data away" manually.

> IOW do _not_ use an unreliable repository for --reference!

Well, that being an accident, I see no way to follow your advice.

> > Anyway, the discussion outlived its usefulness.
> > I have what I wanted (git fsck --unreachable), and nobody can force
> > me to repack my shared repo, so the issue does not exist for the original
> > poster.
>
> Well, I think unless you understand that you do something really fragile,
> the discussion did not yet outlive its usefulness.

Yes, preacher.

Re: Deprecation/Removal schedule

[Andreas Ericsson]

Junio C Hamano wrote:
> 
> * git-lost-found
> 
>   Although it has served us well, I think it is about to outlive
>   its usefulness, thanks to the recent "reflog by default"
>   change.
> 

Nonono. Please no. This has saved me more times than I can even care
to remember. Especially whenever I'm teaching newcomers how to git.
I really wouldn't want to not have it there in case its needed and
some schmuck upgrades git and then loses something vital because he
forgot to enable the reflog on an old repo.

Does it add significantly to the maintenance burden?

-- 
Andreas Ericsson                   andreas.ericsson@op5.se
OP5 AB                             www.op5.se
Tel: +46 8-230225                  Fax: +46 8-230231

Re: Deprecation/Removal schedule

[Alex Riesen]

On 2/6/07, Andreas Ericsson <ae@op5.se> wrote:
> Junio C Hamano wrote:
> >
> > * git-lost-found
> >
> >   Although it has served us well, I think it is about to outlive
> >   its usefulness, thanks to the recent "reflog by default"
> >   change.
> >
>
> Nonono. Please no. This has saved me more times than I can even care
> to remember. Especially whenever I'm teaching newcomers how to git.
> I really wouldn't want to not have it there in case its needed and
> some schmuck upgrades git and then loses something vital because he
> forgot to enable the reflog on an old repo.

It's functionality is superseded by "git fsck --unreachable",
see this discussion.

Re: Deprecation/Removal schedule

[Johannes Schindelin]

Hi,

On Tue, 6 Feb 2007, Alex Riesen wrote:

> On 2/6/07, Andreas Ericsson <ae@op5.se> wrote:
> > Junio C Hamano wrote:
> > >
> > > * git-lost-found
> > >
> > >   Although it has served us well, I think it is about to outlive
> > >   its usefulness, thanks to the recent "reflog by default"
> > >   change.
> > >
> > 
> > Nonono. Please no. This has saved me more times than I can even care
> > to remember. Especially whenever I'm teaching newcomers how to git.
> > I really wouldn't want to not have it there in case its needed and
> > some schmuck upgrades git and then loses something vital because he
> > forgot to enable the reflog on an old repo.
> 
> It's functionality is superseded by "git fsck --unreachable",
> see this discussion.

AFAICT lost-and-found _connects_ the objects to files, and as such is 
easier to browse after running the command (which is expensive).

If you _have_ to lose lost-and-found, why not resurrect the functionality 
as an option to fsck?

Ciao,
Dscho

Re: Deprecation/Removal schedule

[Junio C Hamano]

The feature release after 1.5.0 will be 1.5.1; hopefully we can
stick to 6-8 weeks schedule between feature releases, which
makes it due sometime in April, assuming that 1.5.0 will be done
in a week or so.

In 1.5.0, you will still see git-resolve and git-diff-stages,
but they will be removed by 1.5.1.

We will keep the following for now, but not encourage use of
them to new users.  There isn't any definite removal schedule
right now and we may not even need one.

	whatchanged (use "log --full-history --raw -r" instead)
	applymbox (use "am" instead)
	init-db (use "init")
	fsck-objects (use "fsck")
	repo-config (use "config")

When we created the contrib/ area, I said that anything there is
subject to periodical review for removal if kept unused and
unmaintained.  But anything that satisfies the requirements of
its small userbase will have happy users without exposing its
shortcomings, so I suspect removal from contrib/ by periodic
review would never happen in practice.

I've already removed contrib/colordiff and git-merge-recur.

Among the ones I mentioned in my initial message, the ones that
are not mentioned in this message will stay as before.

Re: [PATCH] Add --patchdepth parameter to git-am.sh

[Junio C Hamano]

Andy Parkins <andyparkins@gmail.com> writes:

> If the series of patches you are applying via git-am was based in a
> different directory there was no way to strip the directory (as you
> would with git-apply).
>
> This patch adds a --patchdepth option to git-am.sh whose argument is
> passed as a "-p" option to git-apply.
>
> Signed-off-by: Andy Parkins <andyparkins@gmail.com>
> ---
> I know git-apply isn't going anywhere, but git-applypatch is.  However, all
> this talk of it made me remember this patch.

I do not understand this remark, as applypatch does not have -p
either.  If we were to do this, I agree with others that this
should simply be called -p (we do not have name crash with
existing options, do we?).

I am not sure how useful applying a patch though git-am with -p
would be.  I can understand, 

After seeing that a patch does not apply because the patch was
generated at the wrong level, it would be very natural to use
"git apply -p0 --index .dotest/patch" and then continue with
"git am --resolved".  So obviously, -p to git-apply is very
useful, but -p given to "am" means all of the patches in your
mailbox has uniformly wrong patch depth.  I wonder how common
would that be in practice.

But other than that "how useful would that be in practice?"
issue, I do not think the patch is too bad, except one hunk:

> @@ -389,12 +392,12 @@ do
>  	fi
>  
>  	echo
> -	echo "Applying '$SUBJECT'"
> +	echo "Applying '$SUBJECT' at depth $patchdepth"
>  	echo
>  

This is wrong if you do not use any $patchdepth.

Re: Deprecation/Removal schedule

[Jakub Narebski]

Junio C Hamano wrote:

> In 1.5.0, you will still see git-resolve and git-diff-stages,
> but they will be removed by 1.5.1.

Well, it is not as if we cannot obtain equivalent of git-diff-stages
without this command. Stages are <ours>, <theirs> and <ancestor>
(git-merge-base <ours> <theirs>) so I think we can use git-diff-tree
with appropriate arguments...

-- 
Jakub Narebski
Poland

Re: Deprecation/Removal schedule

[Johannes Schindelin]

Hi,

Jakub wrote:

> Junio C Hamano wrote:
> 
> > In 1.5.0, you will still see git-resolve and git-diff-stages,
> > but they will be removed by 1.5.1.
> 
> Well, it is not as if we cannot obtain equivalent of git-diff-stages
> without this command. Stages are <ours>, <theirs> and <ancestor>
> (git-merge-base <ours> <theirs>) so I think we can use git-diff-tree
> with appropriate arguments...

Not exactly. The stages are in the index. For example, when you have conflicts, the stages might not reflect _any_ tree at all! This is because _part_ of the changes could be merged, and _part_ of the changes conflict.

But it does not matter anyway. Good bye diff-stages!

Ciao,
Dscho

-- 
Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! 
Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer

Re: Deprecation/Removal schedule

[Junio C Hamano]

Jakub Narebski <jnareb@gmail.com> writes:

> Junio C Hamano wrote:
>
>> In 1.5.0, you will still see git-resolve and git-diff-stages,
>> but they will be removed by 1.5.1.
>
> Well, it is not as if we cannot obtain equivalent of git-diff-stages
> without this command. Stages are <ours>, <theirs> and <ancestor>
> (git-merge-base <ours> <theirs>) so I think we can use git-diff-tree
> with appropriate arguments...

Well, sorry for wasting the bandwidth if it was not obvious from
my message, but that's exactly why I am announcing officially
that they *will* be removed with a definite timeframe.

Re: [PATCH] Add --patchdepth parameter to git-am.sh

[Jakub Narebski]

Junio C Hamano wrote:

> Andy Parkins <andyparkins@gmail.com> writes:
> 
>> If the series of patches you are applying via git-am was based in a
>> different directory there was no way to strip the directory (as you
>> would with git-apply).
>>
>> This patch adds a --patchdepth option to git-am.sh whose argument is
>> passed as a "-p" option to git-apply.
[...]
> 
> I do not understand this remark, as applypatch does not have -p
> either.  If we were to do this, I agree with others that this
> should simply be called -p (we do not have name crash with
> existing options, do we?).

Perhaps options should be -p as short version, and --patchdepth 
(or --strip as in GNU patch) as long version?
-- 
Jakub Narebski
Warsaw, Poland
ShadeHawk on #git

Re: [PATCH] Add --patchdepth parameter to git-am.sh

[Andy Parkins]

On Wednesday 2007 February 07 08:27, Junio C Hamano wrote:

> I do not understand this remark, as applypatch does not have -p
> either.  If we were to do this, I agree with others that this

Oh.  That /would/ make it confusing.  I didn't realise they both didn't have 
it (I thought I had used it at some point in the past, my swiss cheese 
memory).  In that case, the patch is a lot more relevant.

> should simply be called -p (we do not have name crash with
> existing options, do we?).

I have no problem with it being "-p"; I just don't like to take valuable 
single letter namespace unilaterally.

> After seeing that a patch does not apply because the patch was
> generated at the wrong level, it would be very natural to use
> "git apply -p0 --index .dotest/patch" and then continue with
> "git am --resolved".  So obviously, -p to git-apply is very
> useful, but -p given to "am" means all of the patches in your
> mailbox has uniformly wrong patch depth.  I wonder how common
> would that be in practice.

I added it because I had need for it; I managed to manufacture a whole series 
of patches at the wrong patch level.  It had been hard work to make them, so 
I didn't feel like making them all again just to change the depth.

> But other than that "how useful would that be in practice?"
> This is wrong if you do not use any $patchdepth.

Guilty.  As I said, I added it for my own use; so didn't mind too much about 
weird output.  If I resent it would be to drop my modifications to the 
message (it's redundant anyway - surely you know what you specified on the 
command line?), so feel free to just remove that hunk.

Andy
-- 
Dr Andy Parkins, M Eng (hons), MIEE
andyparkins@gmail.com

Re: Deprecation/Removal schedule

[Jakub Narebski]

Johannes Schindelin wrote:
> Jakub Narebski wrote:
>> Junio C Hamano wrote:
>> 
>>> In 1.5.0, you will still see git-resolve and git-diff-stages,
>>> but they will be removed by 1.5.1.
>> 
>> Well, it is not as if we cannot obtain equivalent of git-diff-stages
>> without this command. Stages are <ours>, <theirs> and <ancestor>
>> (git-merge-base <ours> <theirs>) so I think we can use git-diff-tree
>> with appropriate arguments...
> 
> Not exactly. The stages are in the index. For example, when you have
> conflicts, the stages might not reflect _any_ tree at all! This is
> because _part_ of the changes could be merged, and _part_ of the
> changes conflict.   
> 
> But it does not matter anyway. Good bye diff-stages!

Hmmm... I do wonder if git-diff-stages precedes introduction of combined 
diff format...

-- 
Jakub Narebski
Poland

Re: Deprecation/Removal schedule

[Johannes Schindelin]

Hi,

On Tue, 6 Feb 2007, Junio C Hamano wrote:

> There isn't any definite removal schedule right now and we may not even 
> need one.

Thanks!

Ciao,
Dscho