This moves the two features from builtin/rerere.c to a more library-ish
portion of the codebase. No behaviour change.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
rerere forget is a destructive command. When invoked without a path, it
operates on the current directory, potentially deleting many recorded
conflict resolutions.
To make the command safer, a path must be specified as of git 1.8.0. Until
then, give users time to write 'git rerere forget .' if they really mean
the entire current directory.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
After "rerere" resolves conflicts by reusing old resolution, there would
be three kinds of paths with conflict in the index:
* paths that have been resolved in the working tree by rerere;
* paths that need further work whose resolution could be recorded;
* paths that need resolving that rerere won't help.
When the user wants a list of paths that need hand-resolving, output from
"rerere status" does not help, as it shows only the second category, but
the paths in the third category still needs work (rerere only makes sense
for regular files that have both our side and their side, and does not
help other kinds of conflicts, e.g. "we modified, they deleted").
The new subcommand "rerere remaining" can be used to show both. As
opposed to "rerere status", this subcommand also skips printing paths
that have been added to the index, since these paths are already
resolved and are no longer "remaining".
Initial patch provided by Junio. Refactored and modified to skip
resolved paths by Martin. Commit message mostly by Junio.
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
0af0ac7 (Move MERGE_RR from .git/rr-cache/ into .git/) moved the
location of MERGE_RR but I found a few references to the old
location.
Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
'rerere gc' prunes resolutions of conflicted merges that occurred long
time ago, and when doing so it takes the creation time of the
conflicted automerge results into account. This can cause the loss of
frequently used conflict resolutions (e.g. long-living topic branches
are merged into a regularly rebuilt integration branch (think of git's
pu)) when they become old enough to exceed 'rerere gc's threshold.
To prevent the loss of valuable merge resolutions 'rerere' will (1)
update the timestamp of the recorded conflict resolution (i.e.
'postimage') each time when encountering and resolving the same merge
conflict, and (2) take this timestamp, i.e. the time of the last usage
into account when gc'ing.
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Update the definition and callers of string_list_append to use the
string_list as the first argument. This helps make the string_list
API easier to use by being more consistent.
Signed-off-by: Julian Phillips <julian@quantumfyre.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This shrinks the top-level directory a bit, and makes it much more
pleasant to use auto-completion on the thing. Instead of
[torvalds@nehalem git]$ em buil<tab>
Display all 180 possibilities? (y or n)
[torvalds@nehalem git]$ em builtin-sh
builtin-shortlog.c builtin-show-branch.c builtin-show-ref.c
builtin-shortlog.o builtin-show-branch.o builtin-show-ref.o
[torvalds@nehalem git]$ em builtin-shor<tab>
builtin-shortlog.c builtin-shortlog.o
[torvalds@nehalem git]$ em builtin-shortlog.c
you get
[torvalds@nehalem git]$ em buil<tab> [type]
builtin/ builtin.h
[torvalds@nehalem git]$ em builtin [auto-completes to]
[torvalds@nehalem git]$ em builtin/sh<tab> [type]
shortlog.c shortlog.o show-branch.c show-branch.o show-ref.c show-ref.o
[torvalds@nehalem git]$ em builtin/sho [auto-completes to]
[torvalds@nehalem git]$ em builtin/shor<tab> [type]
shortlog.c shortlog.o
[torvalds@nehalem git]$ em builtin/shortlog.c
which doesn't seem all that different, but not having that annoying
break in "Display all 180 possibilities?" is quite a relief.
NOTE! If you do this in a clean tree (no object files etc), or using an
editor that has auto-completion rules that ignores '*.o' files, you
won't see that annoying 'Display all 180 possibilities?' message - it
will just show the choices instead. I think bash has some cut-off
around 100 choices or something.
So the reason I see this is that I'm using an odd editory, and thus
don't have the rules to cut down on auto-completion. But you can
simulate that by using 'ls' instead, or something similar.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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>
After you find out an earlier resolution you told rerere to use was a
mismerge, there is no easy way to clear it. A new subcommand "forget" can
be used to tell git to forget a recorded resolution, so that you can redo
the merge from scratch.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The rr-cache directory should always exist if we are doing
garbage collection (earlier code paths check this
explicitly), but we may not necessarily succeed in opening
it (for example, due to permissions problems). In that case,
we should print an error message rather than simply
segfaulting.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Introduce a command line option to override rerere.autoupdate configuration
variable to make it more useful.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There is no need for "git <command> -h" to depend on being inside
a repository.
Reported by Gerfried Fuchs through http://bugs.debian.org/462557
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This helps to notice when something's going wrong, especially on
systems which lock open files.
I used the following criteria when selecting the code for replacement:
- it was already printing a warning for the unlink failures
- it is in a function which already printing something or is
called from such a function
- it is in a static function, returning void and the function is only
called from a builtin main function (cmd_)
- it is in a function which handles emergency exit (signal handlers)
- it is in a function which is obvously cleaning up the lockfiles
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Both rerere.c and builtin-rerere.c define the static functions
rr_path() and has_resolution() the exact same way. To eliminate this
code duplication this patch turns the functions in rerere.c
non-static, and makes builtin-rerere.c use them. Also, since this
puts these two functions into the global namespace, rename them to
rerere_path() and has_rerere_resolution(), respectively, and rename
their "name" parameter to "hex", because it better reflects what that
parameter actually is.
Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A new inline function is_dot_or_dotdot is used to check if the
directory name is either "." or "..". It returns a non-zero value if
the given string is "." or "..". It's applicable to a lot of Git
source code.
Signed-off-by: Alexander Potashev <aspotashev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We're going to be adding some parameters to this, so we can't have
any uninitialized data in it.
Signed-off-by: Brian Downing <bdowning@lavos.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The name path_list was correct for the first usage of that data structure,
but it really is a general-purpose string list.
$ perl -i -pe 's/path-list/string-list/g' $(git grep -l path-list)
$ perl -i -pe 's/path_list/string_list/g' $(git grep -l path_list)
$ git mv path-list.h string-list.h
$ git mv path-list.c string-list.c
$ perl -i -pe 's/has_path/has_string/g' $(git grep -l has_path)
$ perl -i -pe 's/path/string/g' string-list.[ch]
$ git mv Documentation/technical/api-path-list.txt \
Documentation/technical/api-string-list.txt
$ perl -i -pe 's/strdup_paths/strdup_strings/g' $(git grep -l strdup_paths)
... and then fix all users of string-list to access the member "string"
instead of "path".
Documentation/technical/api-string-list.txt needed some rewrapping, too.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When you misuse a git command, you are shown the usage string.
But this is currently shown in the dashed form. So if you just
copy what you see, it will not work, when the dashed form
is no longer supported.
This patch makes git commands show the dash-less version.
For shell scripts that do not specify OPTIONS_SPEC, git-sh-setup.sh
generates a dash-less usage string now.
Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If you want to reuse the rerere cache in another repository, and set
a symbolic link to it, you do not want to have the two repositories
interfer with each other by accessing the _same_ MERGE_RR.
For example, if you use contrib/git-new-workdir to set up a second
working directory, and you have a conflict in one working directory,
but commit in the other working directory first, the wrong "resolution"
will be recorded.
The easy solution is to move MERGE_RR out of the rr-cache/ directory,
which also corresponds with the notion that rr-cache/ contains cached
resolutions, not some intermediate temporary states.
Noticed by Kalle Olavi Niemitalo.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This patch moves rerere()-related functions into a newly created
rerere.c file.
The setup_rerere() function is needed by both rerere() and cmd_rerere(),
so this function is moved to rerere.c and declared non-static (and "extern")
in newly created rerere.h file.
Signed-off-by: Stephan Beyer <s-beyer@gmx.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When a conflicting file contains a line that begin with "=======", rerere
failed to parse conflict markers. This result to a wrong preimage file and
an unexpected error for the user. The boundary between ours and theirs
not just begin with 7 equals, but is followed by either a SP or a LF.
This patch enforces parsing rules so that markers match in the right order,
and when ambiguous, the command does not autoresolve the conflicted file.
Especially because we are introducing rerere.autoupdate configuration
(which is off by default for safety) that automatically stages the
resolution made by rerere, it is necessary to make sure that we do not
autoresolve when there is any ambiguity.
Signed-off-by: Olivier Marin <dkr@freesurf.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It is dubious if it is cheaper to shift entries repeatedly using memmove()
to collect entries that needs to be written out in front of an array than
simply marking the entries to be skipped. In addition, the label called this
"tail optimization", but this obviously is not what people usually call
with that name.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There were too many places in the code how an entry in the rerere database
looks like, and the garbage_collect() function that iterates over
subdirectories of the rr-cache directory was the worse offender.
Introduce two helper functions, rerere_created_at() and has_resolution(),
to abstract out the logic a bit better.
Incidentally this fixes a small memory leak in garbage_collect()
function. The path list to collect the entries to be pruned were defined
to strdup the paths but the caller was feeding a path after doing an extra
copy. Because the list does not have to be sorted by conflict signature
hash, we use path_list_append() instead of path_list_insert().
While we are at it, make a conflicted hunk comparision in handle_file() a
bit easier to read.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The data read from MERGE_RR file is kept in path-list by hanging textual
40-byte conflict signature to path of the blob that contains the
conflict. The signature is strdup'ed twice, and the second copy is given
to the path-list, leaking the first copy.
Signed-off-by: Junio C Hamano <junio@pobox.com>
Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
git_config() only had a function parameter, but no callback data
parameter. This assumes that all callback functions only modify
global variables.
With this patch, every callback gets a void * parameter, and it is hoped
that this will help the libification effort.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Originally by Kristian Hï¿œgsberg; I fixed the conversion of rerere, which
had a different API.
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This converts the index explicitly on read and write to its on-disk
format, allowing the in-core format to contain more flags, and be
simpler.
In particular, the in-core format is now host-endian (as opposed to the
on-disk one that is network endian in order to be able to be shared
across machines) and as a result we can dispense with all the
htonl/ntohl on accesses to the cache_entry fields.
This will make it easier to make use of various temporary flags that do
not exist in the on-disk format.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This inserts a new function xdi_diff() that currently does not
do anything other than calling the underlying xdl_diff() to the
callchain of current callers of xdl_diff() function.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The code incorrectly assumed that strbuf.buf is always an
allocated piece of memory that has NUL at offset strbuf.len.
That assumption does not hold for a freshly initialized empty
strbuf.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Add strbuf_rtrim to remove trailing spaces.
* Add strbuf_insert to insert data at a given position.
* Off-by one fix in strbuf_addf: strbuf_avail() does not counts the final
\0 so the overflow test for snprintf is the strict comparison. This is
not critical as the growth mechanism chosen will always allocate _more_
memory than asked, so the second test will not fail. It's some kind of
miracle though.
* Add size extension hints for strbuf_init and strbuf_read. If 0, default
applies, else:
+ initial buffer has the given size for strbuf_init.
+ first growth checks it has at least this size rather than the
default 8192.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Make every builtin-*.c file #include "builtin.h".
Also takes care of some declaration/definition mismatches.
Signed-off-by: Peter Hagervall <hager@cs.umu.se>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Two-file merges were rare enough that they were dropped outside of the
radar. This fix is a trivial change to builtin-rerere.c::find_conflict().
It is still sane to insist that we do not do rerere for symlinks, and
require to have stages #2 and #3, but we can drop the requirement to have
stage #1. rerere does not use information from there anyway.
This fix is from Junio, together with two tests to verify that it works
as expected.
Acked-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Earlier, "git rerere" was enabled by creating the directory
.git/rr-cache. That is definitely not in line with most other
features, which are enabled by a config variable.
So, check the config variable "rerere.enabled". If it is set
to "false" explicitely, do not activate rerere, even if
.git/rr-cache exists. This should help when you want to disable
rerere temporarily.
If "rerere.enabled" is not set at all, fall back to detection
of the directory .git/rr-cache.
[jc: with minimum tweaks]
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The instances of xdemitconf_t were initialized member by member.
Instead, initialize them to all zero, so we do not have
to update those places each time we introduce a new member.
[jc: minimally fixed by getting rid of a new global]
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
I audited git for potential undetected write failures.
In the cases fixed below, the diagnostics I add mimic the diagnostics
used in surrounding code, even when that means not reporting
the precise strerror(errno) cause of the error.
Signed-off-by: Jim Meyering <jim@meyering.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This uses "git-apply --whitespace=strip" to fix whitespace errors that have
crept in to our source files over time. There are a few files that need
to have trailing whitespaces (most notably, test vectors). The results
still passes the test, and build result in Documentation/ area is unchanged.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The earlier code does not swap hunks when the beginning of the
first side is identical to the whole of the second side. In
such a case, the first one should sort later.
Signed-off-by: Junio C Hamano <junkio@cox.net>
When a file has more then one conflicting hunks, it repeated the
contents of previous hunks in output for later ones.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Previous step converted use of strncmp() with literal string
mechanically even when the result is only used as a boolean:
if (!strncmp("foo", arg, 3)) ==> if (!(-prefixcmp(arg, "foo")))
This step manually cleans them up to read:
if (!prefixcmp(arg, "foo"))
Signed-off-by: Junio C Hamano <junkio@cox.net>
Junio C Hamano