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* t3301: Verify successful annotation of non-commitsJohan Herland2010-02-131-0/+17
| | | | | | | | Adds a testcase verifying that git-notes works successfully on tree, blob, and tag objects. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Builtin-ify git-notesJohan Herland2010-02-137-40/+350
| | | | | | | | | | | | | | | | | | | The builtin-ification includes some minor behavioural changes to the command-line interface: It is no longer allowed to mix the -m and -F arguments, and it is not allowed to use multiple -F options. As part of the builtin-ification, we add the commit_notes() function to the builtin API. This function (together with the notes.h API) can be easily used from other builtins to manipulate the notes tree. Also includes needed changes to t3301. This patch has been improved by the following contributions: - Stephen Boyd: Use die() instead of fprintf(stderr, ...) followed by exit(1) Cc: Stephen Boyd <bebarino@gmail.com> Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Refactor notes concatenation into a flexible interface for combining notesJohan Herland2010-02-132-60/+112
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When adding a note to an object that already has an existing note, the current solution is to concatenate the contents of the two notes. However, the caller may instead wish to _overwrite_ the existing note with the new note, or maybe even _ignore_ the new note, and keep the existing one. There might also be other ways of combining notes that are only known to the caller. Therefore, instead of unconditionally concatenating notes, we let the caller specify how to combine notes, by passing in a pointer to a function for combining notes. The caller may choose to implement its own function for notes combining, but normally one of the following three conveniently supplied notes combination functions will be sufficient: - combine_notes_concatenate() combines the two notes by appending the contents of the new note to the contents of the existing note. - combine_notes_overwrite() replaces the existing note with the new note. - combine_notes_ignore() keeps the existing note, and ignores the new note. A combine_notes function can be passed to init_notes() to choose a default combine_notes function for that notes tree. If NULL is given, the notes tree falls back to combine_notes_concatenate() as the ultimate default. A combine_notes function can also be passed directly to add_note(), to control the notes combining behaviour for a note addition in particular. If NULL is passed, the combine_notes function registered for the given notes tree is used. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Notes API: Allow multiple concurrent notes trees with new struct notes_treeJohan Herland2010-02-133-66/+112
| | | | | | | | | | | | | The new struct notes_tree encapsulates access to a specific notes tree. It is provided to allow callers to make use of several different notes trees simultaneously. A struct notes_tree * parameter is added to every function in the notes API. In all cases, NULL can be passed, in which case the fallback "default" notes tree (default_notes_tree) is used. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Notes API: write_notes_tree(): Store the notes tree in the databaseJohan Herland2010-02-132-3/+180
| | | | | | | | | Uses for_each_note() to traverse the notes tree, and produces tree objects on the fly representing the "on-disk" version of the notes tree with appropriate fanout. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Notes API: for_each_note(): Traverse the entire notes tree with a callbackJohan Herland2010-02-132-0/+180
| | | | | | | | This includes a first attempt at creating an optimal fanout scheme (which is calculated on-the-fly, while traversing). Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Notes API: get_note(): Return the note annotating the given objectJohan Herland2010-02-132-7/+15
| | | | | | | Created by a simple cleanup and rename of lookup_notes(). Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Notes API: remove_note(): Remove note objects from the notes tree structureJohan Herland2010-02-132-1/+87
| | | | | | | | This includes adding internal functions for maintaining a healthy notes tree structure after removing individual notes. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Notes API: add_note(): Add note objects to the internal notes tree structureJohan Herland2010-02-132-0/+15
| | | | | Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Notes API: init_notes(): Initialize the notes tree from the given notes refJohan Herland2010-02-132-12/+38
| | | | | | | | | | | | | | Created by a simple refactoring of initialize_notes(). Also add a new 'flags' parameter, which is a bitwise combination of notes initialization flags. For now, there is only one flag - NOTES_INIT_EMPTY - which indicates that the notes tree should not auto-load the contents of the given (or default) notes ref, but rather should leave the notes tree initialized to an empty state. This will become useful in the future when manipulating the notes tree through the notes API. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Add tests for checking correct handling of $GIT_NOTES_REF and core.notesRefJohan Herland2010-02-131-0/+48
| | | | | Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Notes API: get_commit_notes() -> format_note() + remove the commit restrictionJohan Herland2010-02-133-22/+30
| | | | | | | | | | | | | There is really no reason why only commit objects can be annotated. By changing the struct commit parameter to get_commit_notes() into a sha1 we gain the ability to annotate any object type. To reflect this in the function naming as well, we rename get_commit_notes() to format_note(). This patch also fixes comments and variable names throughout notes.c as a consequence of the removal of the unnecessary 'commit' restriction. Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Minor cosmetic fixes to notes.cJohan Herland2010-02-131-5/+4
| | | | | Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Merge branch 'jc/maint-limit-note-output'Junio C Hamano2010-01-228-1/+85
|\ | | | | | | | | | | * jc/maint-limit-note-output: Fix "log --oneline" not to show notes Fix "log" family not to be too agressive about showing notes
| * Fix "log --oneline" not to show notesJunio C Hamano2010-01-213-4/+7
| | | | | | | | | | | | This option should be treated pretty much the same as --format="%h %s". Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * Fix "log" family not to be too agressive about showing notesJunio C Hamano2010-01-208-1/+82
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Giving "Notes" information in the default output format of "log" and "show" is a sensible progress (the user has asked for it by having the notes), but for some commands (e.g. "format-patch") spewing notes into the formatted commit log message without being asked is too aggressive. Enable notes output only for "log", "show", "whatchanged" by default and only when the user didn't ask any specific --pretty/--format from the command line; users can explicitly override this default with --show-notes and --no-notes option. Parts of tests are taken from Jeff King's fix. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | Merge branch 'nd/ls-files-sparse-fix'Junio C Hamano2010-01-221-3/+13
|\ \ | | | | | | | | | | | | * nd/ls-files-sparse-fix: Fix memory corruption when .gitignore does not end by \n
| * | Fix memory corruption when .gitignore does not end by \nNguyễn Thái Ngọc Duy2010-01-201-3/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit b5041c5 (Avoid writing to buffer in add_excludes_from_file_1()) tried not to append '\n' at the end because the next commit may return a buffer that does not have extra space for that. Unfortunately it left this assignment in the loop: buf[i - (i && buf[i-1] == '\r')] = 0; that can corrupt memory if "buf" is not '\n' terminated. But even if it does not corrupt memory, the last line would not be NULL-terminated, leading to errors later inside add_exclude(). This patch fixes it by reverting the faulty commit and make sure "buf" is always \n terminated. While at it, free unused memory properly. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Make difftool.prompt fall back to mergetool.promptSebastian Schuberth2010-01-221-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The documentation states that "git-difftool falls back to git-mergetool config variables when the difftool equivalents have not been defined". Until now, this was not the case for "difftool.prompt". Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com> Acked-by: David Aguilar <davvid@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | engine.pl: Fix a recent breakage of the buildsystem generatorRamsay Jones2010-01-221-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit ade2ca0c (Do not try to remove directories when removing old links, 2009-10-27) added an expression to a 'test' using an '-o' or connective. This resulted in the buildsystem generator mistaking a conditional 'rm' for a linker command. In order to fix the breakage, we filter out all 'test' commands before then attempting to identify the commands of interest. Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Acked-by: Sebastian Schuberth <sschuberth@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | git-mv: fix moving more than one source to a single destinationJunio C Hamano2010-01-222-4/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code used as if return value from basename(3) were stable, but often the function is implemented to return a pointer to a static storage internal to it. Because basename(3) is also allowed to modify its input parameter in place, casting constness away from the strings we obtained from the caller and giving them to basename is a no-no. Reported, and initial fix and test supplied by David Rydh. Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | rebase -i: Enclose sed command substitution in quotesMichael Haggerty2010-01-221-1/+1
| | | | | | | | | | | | | | | | | | | | | Reported by: Johannes Sixt <j.sixt@viscovery.net> Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | rebase -i: Avoid non-portable "test X -a Y"Michael Haggerty2010-01-221-1/+1
| | | | | | | | | | | | | | | | | | | | | Reported by: Eric Blake <ebb9@byu.net> Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | make "index-pack" a built-inLinus Torvalds2010-01-227-15/+16
| | | | | | | | | | | | | | | | | | | | | | | | This required some fairly trivial packfile function 'const' cleanup, since the builtin commands get a const char *argv[] array. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | make "git pack-redundant" a built-inLinus Torvalds2010-01-224-7/+5
| | | | | | | | | | | | | | | Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | make "git unpack-file" a built-inLinus Torvalds2010-01-224-5/+4
| | | | | | | | | | | | | | | Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | make "mktag" a built-inLinus Torvalds2010-01-224-6/+4
| | | | | | | | | | | | | | | Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | make "merge-index" a built-inLinus Torvalds2010-01-224-6/+5
| | | | | | | | | | | | | | | Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | merge-tree: remove unnecessary call of git_extract_argv0_pathJohannes Sixt2010-01-221-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | This call should have been removed when the utility was made a builtin by 907a7cb. Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | make "git patch-id" a built-inLinus Torvalds2010-01-214-4/+4
| | | | | | | | | | | | | | | Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | make "git var" a built-inLinus Torvalds2010-01-214-4/+4
| | | | | | | | | | | | | | | Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | fix git-p4 editor invocationNicolas Pitre2010-01-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | The strip() is required to remove the trailing newline character, as already done elsewhere. Signed-off-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | Merge branch 'maint'Junio C Hamano2010-01-212-6/+20
|\ \ \ | | | | | | | | | | | | | | | | | | | | * maint: merge-recursive: do not return NULL only to cause segfault retry request without query when info/refs?query fails
| * | | merge-recursive: do not return NULL only to cause segfaultJunio C Hamano2010-01-211-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | merge-recursive calls write_tree_from_memory() to come up with a virtual tree, with possible conflict markers inside the blob contents, while merging multiple common ancestors down. It is a bug to call the function with unmerged entries in the index, even if the merge to come up with the common ancestor resulted in conflicts. Otherwise the result won't be expressible as a tree object. We _might_ want to suggest the user to set GIT_MERGE_VERBOSITY to 5 and re-run the merge in the message. At least we will know which part of process_renames() or process_entry() functions is not correctly handling the unmerged paths, and it might help us diagnosing the issue. Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | retry request without query when info/refs?query failsTay Ray Chuan2010-01-211-2/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When "info/refs" is a static file and not behind a CGI handler, some servers may not handle a GET request for it with a query string appended (eg. "?foo=bar") properly. If such a request fails, retry it sans the query string. In addition, ensure that the "smart" http protocol is not used (a service has to be specified with "?service=<service name>" to be conformant). Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Reported-and-tested-by: Yaroslav Halchenko <debian@onerussian.com> Acked-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | make "git hash-object" a built-inLinus Torvalds2010-01-214-5/+4
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | make "git merge-tree" a built-inLinus Torvalds2010-01-214-4/+4
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | slim down "git show-index"Linus Torvalds2010-01-214-67/+69
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As the documentation says, this is primarily for debugging, and in the longer term we should rename it to test-show-index or something. In the meantime, just avoid xmalloc (which slurps in the rest of git), and separating out the trivial hex functions into "hex.o". This results in [torvalds@nehalem git]$ size git-show-index text data bss dec hex filename 222818 2276 112688 337782 52776 git-show-index (before) 5696 624 1264 7584 1da0 git-show-index (after) which is a whole lot better. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | Remove diff machinery dependency from read-cacheLinus Torvalds2010-01-212-78/+76
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Exal Sibeaz pointed out that some git files are way too big, and that add_files_to_cache() brings in all the diff machinery to any git binary that needs the basic git SHA1 object operations from read-cache.c. Which is pretty much all of them. It's doubly silly, since add_files_to_cache() is only used by builtin programs (add, checkout and commit), so it's fairly easily fixed by just moving the thing to builtin-add.c, and avoiding the dependency entirely. I initially argued to Exal that it would probably be best to try to depend on smart compilers and linkers, but after spending some time trying to make -ffunction-sections work and giving up, I think Exal was right, and the fix is to just do some trivial cleanups like this. This trivial cleanup results in pretty stunning file size differences. The diff machinery really is mostly used by just the builtin programs, and you have things like these trivial before-and-after numbers: -rwxr-xr-x 1 torvalds torvalds 1727420 2010-01-21 10:53 git-hash-object -rwxrwxr-x 1 torvalds torvalds 940265 2010-01-21 11:16 git-hash-object Now, I'm not saying that 940kB is good either, but that's mostly all the debug information - you can see the real code with 'size': text data bss dec hex filename 418675 3920 127408 550003 86473 git-hash-object (before) 230650 2288 111728 344666 5425a git-hash-object (after) ie we have a nice 24% size reduction from this trivial cleanup. It's not just that one file either. I get: [torvalds@nehalem git]$ du -s /home/torvalds/libexec/git-core 45640 /home/torvalds/libexec/git-core (before) 33508 /home/torvalds/libexec/git-core (after) so we're talking 12MB of diskspace here. (Of course, stripping all the binaries brings the 33MB down to 9MB, so the whole debug information thing is still the bulk of it all, but that's a separate issue entirely) Now, I'm sure there are other things we should do, and changing our compiler flags from -O2 to -Os would bring the text size down by an additional almost 20%, but this thing Exal pointed out seems to be some good low-hanging fruit. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | git-rebase.txt: Fix spellingHorst H. von Brand2010-01-211-1/+1
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Horst H. von Brand <vonbrand@inf.utfsm.cl> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | Make 'rerere forget' work from a subdirectory.Johannes Sixt2010-01-212-24/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It forgot to apply the prefix to the paths given on the command line. [jc: added test] Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | Make test case numbers uniqueJohannes Sixt2010-01-212-0/+0
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | conflict-marker-size: add test and docsJunio C Hamano2010-01-202-0/+29
| | | | | | | | | | | | | | | | Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | Update draft release notes to 1.7.0Junio C Hamano2010-01-201-1/+45
| | | | | | | | | | | | | | | | Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | Merge branch 'bw/cvsimport'Junio C Hamano2010-01-201-35/+35
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * bw/cvsimport: cvsimport: standarize system() calls to external git tools cvsimport: standarize open() calls to external git tools cvsimport: modernize callouts to git subcommands
| * | | | cvsimport: standarize system() calls to external git toolsBen Walton2010-01-191-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch standardizes calls to system() where external git tools are called. Instead of system("git foo ... "), use system(qw(git foo ...)). All calls are made without the use of an 'sh -c' process to split the arguments. Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | cvsimport: standarize open() calls to external git toolsBen Walton2010-01-191-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Standardize calls to open() where external git tools are used as part of a pipeline. Instead of open(X, "git foo ... |)", use open(X, "-|", qw(git foo ...)). All calls are made without the use of an 'sh -c' process to split the arguments. Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca> Signed-off-by: Junio C Hamano <gitster@pobox.com>
| * | | | cvsimport: modernize callouts to git subcommandsBen Walton2010-01-191-32/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch updates all calling conventions for external git tools. to use the modern calling convention (eg: git foo instead of git-foo). This is almost entierly a s/git-/git / operation, with deviations only as required to keep tests passing. Reported-by: Alexander Maier <amaier@opencsw.org> Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* | | | | Merge branch 'jc/checkout-merge-base'Junio C Hamano2010-01-201-2/+4
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | * jc/checkout-merge-base: Fix "checkout A..." synonym for "checkout A...HEAD" on Windows
| * | | | | Fix "checkout A..." synonym for "checkout A...HEAD" on WindowsJunio C Hamano2010-01-191-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When switching to a different commit, we first see the named rev exists as a commit using lookup_commit_reference_gently(), and set new.path to a string "refs/heads/" followed by the name the user gave us (but after taking into special short-hands like @{-1} == "previous branch" and "@{upstream}" == "the branch we merge with" into account). If the resulting string names an existsing ref, then we are switching to that branch (and will be building new commits on top of it); otherwise we are detaching HEAD at that commit. When the "master..." syntax is used as a short-hand for "master...HEAD", we do want to detach HEAD at the merge base. However, on Windows, when asked if ".git/refs/heads/master..." exists, the filesystem happily says "it does" when ".git/refs/heads/master" exists. Work this issue around by first calling check_ref_format(new.path) to see if the string can possibly be a valid ref under "refs/heads/", before asking resolve_ref(). We used to run another lookup_commit_reference(rev) even though we know it succeeded and we have a good commit in new.commit already; this has been with us from 782c2d6 (Build in checkout, 2008-02-07), the first version we had "git checkout" implemented in C. Drop it. Noticed by Alex Riesen. Signed-off-by: Junio C Hamano <gitster@pobox.com>