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Jeff King 750b2e4785 t3910: show failure of core.precomposeunicode with decomposed filenames 
If you have existing decomposed filenames in your git
repository (e.g., that were created with older versions of
git that did not precompose unicode), a modern git with
core.precomposeunicode set does not handle them well.

The problem is that we normalize the paths coming from the
disk into their precomposed form, and then compare them
against the literal bytes in the index. This makes things
better if you have the precomposed form in the index. It
makes things worse if you actually have the decomposed form
in the index.

As a result, paths with decomposed filenames may have their
precomposed variants listed as untracked files (even though
the precomposed variants do not exist on-disk at all).

This patch just adds a test to demonstrate the breakage.
Some possible fixes are:

  1. Tell everyone that NFD in the git repo is wrong, and
     they should make a new commit to normalize all their
     in-repo files to be precomposed.

     This is probably not the right thing to do, because it
     still doesn't fix checkouts of old history. And it
     spreads the problem to people on byte-preserving
     filesystems (like ext4), because now they have to start
     precomposing their filenames as they are adde to git.

  2. Do all index filename comparisons using a UTF-8 aware
     comparison function when core.precomposeunicode is set.
     This would probably have bad performance, and somewhat
     defeats the point of converting the filenames at the
     readdir level in the first place.

  3. Convert index filenames to their precomposed form when
     we read the index from disk. This would be efficient,
     but we would have to be careful not to write the
     precomposed forms back out to disk.

  4. Introduce some infrastructure to efficiently match up
     the precomposed/decomposed forms. We already do
     something similar for case-insensitive files using
     name-hash.c. We might be able to adapt that strategy
     here.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-04-29 09:59:44 -07:00
block-sha1
builtin Merge branch 'jl/nor-or-nand-and' into maint 2014-04-09 12:03:26 -07:00
compat Merge branch 'jk/commit-dates-parsing-fix' into maint 2014-04-09 11:59:38 -07:00
contrib comments: fix misuses of "nor" 2014-03-31 15:29:27 -07:00
Documentation Git 1.9.2 2014-04-09 12:04:34 -07:00
git-gui
gitk-git
gitweb comments: fix misuses of "nor" 2014-03-31 15:29:27 -07:00
mergetools
perl code and test: fix misuses of "nor" 2014-03-31 15:29:33 -07:00
po i18n: proposed command missing leading dash 2014-03-05 22:10:24 +08:00
ppc
t t3910: show failure of core.precomposeunicode with decomposed filenames 2014-04-29 09:59:44 -07:00
templates
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abspath.c
aclocal.m4
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advice.h
alias.c
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archive-tar.c
archive-zip.c
archive.c
archive.h
argv-array.c
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attr.c
attr.h
base85.c
bisect.c
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blob.c
blob.h
branch.c
branch.h
builtin.h
bulk-checkin.c
bulk-checkin.h
bundle.c
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cache-tree.c
cache-tree.h
cache.h Merge branch 'jk/commit-dates-parsing-fix' into maint 2014-03-18 14:04:01 -07:00
check-builtins.sh
check-racy.c
check_bindir
color.c
color.h
column.c comments: fix misuses of "nor" 2014-03-31 15:29:27 -07:00
column.h
combine-diff.c
command-list.txt
commit-slab.h
commit.c
commit.h Merge branch 'bp/commit-p-editor' into maint 2014-04-08 12:07:06 -07:00
config.c Merge branch 'jk/config-path-include-fix' into maint 2014-03-18 14:00:15 -07:00
config.mak.in
config.mak.uname Merge branch 'jk/commit-dates-parsing-fix' into maint 2014-04-09 11:59:38 -07:00
configure.ac
connect.c
connect.h
connected.c
connected.h
convert.c
convert.h
copy.c
COPYING
credential-cache--daemon.c
credential-cache.c
credential-store.c
credential.c
credential.h
csum-file.c
csum-file.h
ctype.c
daemon.c
date.c Merge branch 'jk/commit-dates-parsing-fix' into maint 2014-03-18 14:04:01 -07:00
decorate.c
decorate.h
delta.h comments: fix misuses of "nor" 2014-03-31 15:29:27 -07:00
diff-delta.c
diff-lib.c pathspec: convert some match_pathspec_depth() to ce_path_match() 2014-02-24 14:36:52 -08:00
diff-no-index.c Merge branch 'jc/fix-diff-no-index-diff-opt-parse' into maint 2014-04-09 11:59:16 -07:00
diff.c comments: fix misuses of "nor" 2014-03-31 15:29:27 -07:00
diff.h
diffcore-break.c
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c
diffcore-rename.c
diffcore.h Merge branch 'nd/diff-quiet-stat-dirty' into maint 2014-03-18 13:59:56 -07:00
dir.c pathspec: pass directory indicator to match_pathspec_item() 2014-02-24 14:37:19 -08:00
dir.h pathspec: pass directory indicator to match_pathspec_item() 2014-02-24 14:37:19 -08:00
editor.c
entry.c Merge branch 'mh/remove-subtree-long-pathname-fix' into maint 2014-04-03 13:39:05 -07:00
environment.c
exec_cmd.c
exec_cmd.h
fast-import.c
fetch-pack.c Merge branch 'jk/shallow-update-fix' into maint 2014-04-03 13:39:03 -07:00
fetch-pack.h
fmt-merge-msg.h
fsck.c date: check date overflow against time_t 2014-02-24 10:12:58 -08:00
fsck.h
generate-cmdlist.sh
gettext.c
gettext.h
git-add--interactive.perl code and test: fix misuses of "nor" 2014-03-31 15:29:33 -07:00
git-am.sh comments: fix misuses of "nor" 2014-03-31 15:29:27 -07:00
git-archimport.perl
git-bisect.sh
git-compat-util.h Merge branch 'jk/commit-dates-parsing-fix' into maint 2014-04-09 11:59:38 -07:00
git-cvsexportcommit.perl
git-cvsimport.perl
git-cvsserver.perl
git-difftool--helper.sh
git-difftool.perl difftool: support repositories with .git-files 2014-02-24 09:53:57 -08:00
git-filter-branch.sh
git-instaweb.sh
git-merge-octopus.sh
git-merge-one-file.sh
git-merge-resolve.sh
git-mergetool--lib.sh
git-mergetool.sh
git-p4.py
git-parse-remote.sh
git-pull.sh
git-quiltimport.sh
git-rebase--am.sh
git-rebase--interactive.sh rebase -i: do not "echo" random user-supplied strings 2014-03-17 12:24:14 -07:00
git-rebase--merge.sh
git-rebase.sh
git-relink.perl
git-remote-testgit.sh
git-request-pull.sh
git-send-email.perl Merge branch 'rk/send-email-ssl-cert' into maint 2014-02-13 13:38:19 -08:00
git-sh-i18n.sh
git-sh-setup.sh
git-stash.sh Merge branch 'jc/stash-pop-not-popped' into maint 2014-04-03 13:39:03 -07:00
git-submodule.sh
git-svn.perl
GIT-VERSION-GEN Git 1.9.2 2014-04-09 12:04:34 -07:00
git-web--browse.sh
git.c
git.rc
git.spec.in
gpg-interface.c
gpg-interface.h
graph.c
graph.h
grep.c
grep.h
hash.c
hash.h
help.c
help.h
hex.c
http-backend.c
http-fetch.c
http-push.c
http-walker.c
http.c
http.h comments: fix misuses of "nor" 2014-03-31 15:29:27 -07:00
ident.c
imap-send.c
INSTALL
kwset.c
kwset.h
levenshtein.c
levenshtein.h
LGPL-2.1
line-log.c
line-log.h
line-range.c
line-range.h
list-objects.c
list-objects.h
ll-merge.c
ll-merge.h
lockfile.c
log-tree.c
log-tree.h
mailmap.c
mailmap.h
Makefile Merge branch 'jl/nor-or-nand-and' into maint 2014-04-09 12:03:26 -07:00
match-trees.c
merge-blobs.c
merge-blobs.h
merge-recursive.c Merge branch 'bk/refresh-missing-ok-in-merge-recursive' into maint 2014-03-18 14:02:38 -07:00
merge-recursive.h
merge.c
mergesort.c
mergesort.h
name-hash.c
notes-cache.c
notes-cache.h
notes-merge.c
notes-merge.h
notes-utils.c
notes-utils.h
notes.c
notes.h
object.c
object.h
pack-check.c
pack-revindex.c
pack-revindex.h
pack-write.c
pack.h
pager.c
parse-options-cb.c
parse-options.c
parse-options.h
patch-delta.c
patch-ids.c
patch-ids.h
path.c Merge branch 'jk/config-path-include-fix' into maint 2014-03-18 14:00:15 -07:00
pathspec.c pathspec: convert some match_pathspec_depth() to ce_path_match() 2014-02-24 14:36:52 -08:00
pathspec.h
pkt-line.c
pkt-line.h comments: fix misuses of "nor" 2014-03-31 15:29:27 -07:00
preload-index.c pathspec: convert some match_pathspec_depth() to ce_path_match() 2014-02-24 14:36:52 -08:00
pretty.c Merge branch 'jk/commit-dates-parsing-fix' into maint 2014-03-18 14:04:01 -07:00
prio-queue.c
prio-queue.h
progress.c
progress.h
prompt.c
prompt.h
quote.c
quote.h
reachable.c
reachable.h
read-cache.c Merge branch 'bk/refresh-missing-ok-in-merge-recursive' into maint 2014-03-18 14:02:38 -07:00
README
reflog-walk.c
reflog-walk.h
refs.c
refs.h
RelNotes Start preparing for 1.9.1 2014-04-03 13:40:00 -07:00
remote-curl.c
remote-testsvn.c
remote.c Merge branch 'jl/nor-or-nand-and' into maint 2014-04-09 12:03:26 -07:00
remote.h
replace_object.c
rerere.c pathspec: pass directory indicator to match_pathspec_item() 2014-02-24 14:37:19 -08:00
rerere.h
resolve-undo.c pathspec: convert some match_pathspec_depth() to ce_path_match() 2014-02-24 14:36:52 -08:00
resolve-undo.h
revision.c pathspec: convert some match_pathspec_depth() to ce_path_match() 2014-02-24 14:36:52 -08:00
revision.h
run-command.c commit: fix patch hunk editing with "commit -p -m" 2014-03-18 11:25:12 -07:00
run-command.h run-command: mark run_hook_with_custom_index as deprecated 2014-03-18 11:26:12 -07:00
send-pack.c
send-pack.h
sequencer.c
sequencer.h
server-info.c
setup.c
sh-i18n--envsubst.c
sha1-array.c
sha1-array.h
sha1-lookup.c
sha1-lookup.h
sha1_file.c code and test: fix misuses of "nor" 2014-03-31 15:29:33 -07:00
sha1_name.c
shallow.c shallow: verify shallow file after taking lock 2014-03-17 15:03:32 -07:00
shell.c
shortlog.h
show-index.c
sideband.c
sideband.h
sigchain.c
sigchain.h
strbuf.c
strbuf.h
streaming.c
streaming.h
string-list.c
string-list.h
submodule.c
submodule.h
symlinks.c
tag.c
tag.h
tar.h
test-chmtime.c comments: fix misuses of "nor" 2014-03-31 15:29:27 -07:00
test-ctype.c
test-date.c
test-delta.c
test-dump-cache-tree.c
test-genrandom.c
test-index-version.c
test-line-buffer.c
test-match-trees.c
test-mergesort.c
test-mktemp.c
test-parse-options.c
test-path-utils.c
test-prio-queue.c
test-read-cache.c
test-regex.c
test-revision-walking.c
test-run-command.c
test-scrap-cache-tree.c
test-sha1.c
test-sha1.sh
test-sigchain.c
test-string-list.c
test-subprocess.c
test-svn-fe.c
test-urlmatch-normalization.c
test-wildmatch.c
thread-utils.c
thread-utils.h
trace.c
transport-helper.c
transport.c
transport.h
tree-diff.c
tree-walk.c Merge branch 'as/tree-walk-fix-aggressive-short-cut' into maint 2014-02-13 13:37:53 -08:00
tree-walk.h
tree.c
tree.h
unimplemented.sh
unix-socket.c
unix-socket.h
unpack-trees.c
unpack-trees.h
upload-pack.c shallow: automatically clean up shallow tempfiles 2014-02-27 12:07:13 -08:00
url.c
url.h
urlmatch.c
urlmatch.h
usage.c
userdiff.c userdiff: update Ada patterns 2014-02-05 10:45:51 -08:00
userdiff.h
utf8.c
utf8.h
varint.c
varint.h
version.c
version.h
walker.c
walker.h
wildmatch.c
wildmatch.h
wrap-for-bin.sh
wrapper.c
write_or_die.c
ws.c
wt-status.c Merge branch 'mm/status-porcelain-format-i18n-fix' into maint 2014-04-08 12:07:06 -07:00
wt-status.h status: disable translation when --porcelain is used 2014-03-26 12:56:30 -07:00
xdiff-interface.c
xdiff-interface.h
zlib.c

README 

////////////////////////////////////////////////////////////////

	Git - the stupid content tracker

////////////////////////////////////////////////////////////////

"git" can mean anything, depending on your mood.

 - random three-letter combination that is pronounceable, and not
   actually used by any common UNIX command.  The fact that it is a
   mispronunciation of "get" may or may not be relevant.
 - stupid. contemptible and despicable. simple. Take your pick from the
   dictionary of slang.
 - "global information tracker": you're in a good mood, and it actually
   works for you. Angels sing, and a light suddenly fills the room.
 - "goddamn idiotic truckload of sh*t": when it breaks

Git is a fast, scalable, distributed revision control system with an
unusually rich command set that provides both high-level operations
and full access to internals.

Git is an Open Source project covered by the GNU General Public
License version 2 (some parts of it are under different licenses,
compatible with the GPLv2). It was originally written by Linus
Torvalds with help of a group of hackers around the net.

Please read the file INSTALL for installation instructions.

See Documentation/gittutorial.txt to get started, then see
Documentation/everyday.txt for a useful minimum set of commands, and
Documentation/git-commandname.txt for documentation of each command.
If git has been correctly installed, then the tutorial can also be
read with "man gittutorial" or "git help tutorial", and the
documentation of each command with "man git-commandname" or "git help
commandname".

CVS users may also want to read Documentation/gitcvs-migration.txt
("man gitcvs-migration" or "git help cvs-migration" if git is
installed).

Many Git online resources are accessible from http://git-scm.com/
including full documentation and Git related tools.

The user discussion and development of Git take place on the Git
mailing list -- everyone is welcome to post bug reports, feature
requests, comments and patches to git@vger.kernel.org (read
Documentation/SubmittingPatches for instructions on patch submission).
To subscribe to the list, send an email with just "subscribe git" in
the body to majordomo@vger.kernel.org. The mailing list archives are
available at http://news.gmane.org/gmane.comp.version-control.git/,
http://marc.info/?l=git and other archival sites.

The maintainer frequently sends the "What's cooking" reports that
list the current status of various development topics to the mailing
list.  The discussion following them give a good reference for
project status, development direction and remaining tasks.