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SubjectGIT 1.0.4 and what is in master and proposed updates.
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GIT 1.0.4 contains the following updates since GIT 1.0.3:

* check_packed_git_idx(): check integrity of the idx file itself.

Earlier we did not use SHA1 checksum at the end of the index
file that records the checksum of the index file itself.

* show-branch: usability updates.

Fixes the bug that made 'git show-branch --heads' show the
same heads twice, among other things.

* merge --no-commit: tweak message.

Instead of saying "failed/prevented", say which one.

* ls-files --full-name: usage string and documentation.

The option was not documented.

* mailinfo: iconv does not like "latin-1" -- should spell it "latin1"

Noted by Marco; when a message does not identify its own
charset, we tried to assume latin1 but misspelled it as
latin-1, and iconv barfed.


The master branch has all of the above, and in addition contains
the following:

* git-clone: do not special case dumb http.

This is to remove the remnant from the days http-fetch did
not handle packed repositories natively.

* rev-parse: --show-cdup

This is a low-impact shorthand for:

git rev-parse --show-prefix | sed -e 's|[^/][^/]*|..|g'
and will be used by "git checkout works from a subdirectory"
patch.


The proposed updates branch has the following updates.

* git-daemon --base-path

Lack of the command line verification bugs me somewhat with
this patch. Also we might want to apply the base-path to the
whitelist as well, which the patch currently does not do.
Almost there, but not quite ready.

* help with group permission in a shared repository.

This series consists of these commits:

Introduce core.sharedrepository
git-init-db: initialize shared repositories with --shared
Tutorial: mention shared repository management.

I think this one is ready. I just am taking things slowly.

* make git-checkout work from a subdirectory.

This series consists of these commits:

checkout: sometimes work from a subdirectory.
ls-tree: chomp leading directories when run from a subdirectory
Adjust to ls-tree --full-name when run from a subdirectory.

This seems to work pretty well. I just am taking things
slowly.

* require packfiles to follow the naming convention more strictly.

This rejects a packfile whose name does not begin with
"pack-" followed by 40-byte hexadecimal digits. The core
never had such limitation (the only thing it required was
that the pack and the idx are named with the same basename
with .pack and .idx extention), but the way http-fetch
handles packs requires this.

An alternative strategy to handle the current mess would be
to fix http-fetch so that it does not assume that pack names
are always in the format "pack-[0-9a-f]{40}.pack", getting
rid of sha1[] column from struct packed_git. This is
probably more work, but would be cleaner. On the other hand,
the cleanliness probably would not buy us much. We do not
need to insist on "pack-" prefix, but there is no strong
reason to hate it, and we need to ensure packnames do not
collide with each other anyway, so having SHA1 hash in the
name makes sense. However, we currently allow arbitrary 40
hexadecimal digits there and the user is free to say 0{40}.
Continuing to allow this defeats the initial purpose of why
40 hexadecimal digits are there: collision avoidance.
This series starts warning if the 40-byte hex that follows
"pack-" is not the correct hash for contained object names
that was given by pack-objects when the pack was created, and
has a provision to later start rejecting such packs.

This is probably controversial because it would eventually
require users to rename their packs created using pre v0.99.9
tools. There is a small utility program that helps the
conversion process, so it may not be that painful.

* Disable USE_SYMLINK_HEAD by default.

This uses symref for .git/HEAD everywhere. Some Porcelain
may not be ready to deal with it, so it is kept in the
proposed updates branch for now.

If your Porcelain "cat .git/HEAD", or "readlink .git/HEAD",
it is already broken in repositories that use symref for
HEAD, but it will be broken everywhere by this. Use
git-symbolic-ref if you want to find out the name of the
branch HEAD points at, or git-rev-parse if you want to find
out the commit object name HEAD points at.

Most notably, git_read_hash(".../HEAD") in gitweb is probably
affected (meaning, it is already broken).

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