| Commit message (Collapse) | Author | Age | Files | Lines |
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This shouldn't overflow, as we are copying a sha1 hex into a
41-byte buffer. But it does not hurt to use a bound-checking
function, which protects us and makes auditing for overflows
easier.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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By consistently using "upon failure, set 'ret' and jump to out"
pattern, flatten the function further.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This gives a thin abstraction between the conflict ID that is a hash
value obtained by inspecting the conflicts and the name of the
directory under $GIT_DIR/rr-cache/, in which the previous resolution
is recorded to be replayed. The plan is to make sure that the
presence of the directory does not imply the presense of a previous
resolution and vice-versa, and later allow us to have more than one
pair of <preimage, postimage> for a given conflict ID.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Most places we call conflict IDs "name" and some others we call them
"hex"; update all of them to "id".
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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It's just easier to follow this way.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Extract the body of a loop that attempts to replay recorded
resolution for each conflicted path into a helper function, not
because I want to call it from multiple places later, but because
the logic has become too deeply nested and hard to read.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Explain the internals of rerere as in-code comments, while
sprinkling "NEEDSWORK" comment to highlight iffy bits and
questionable assumptions.
This covers the codepath that implements "rerere gc" and "rerere
clear".
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Explain the internals of rerere as in-code comments, while
sprinkling "NEEDSWORK" comment to highlight iffy bits and
questionable assumptions.
This covers the codepath that implements "rerere forget".
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Explain the internals of rerere as in-code comments, while
sprinkling "NEEDSWORK" comment to highlight iffy bits and
questionable assumptions.
This one covers the codepath reached from rerere(), the primary
interface to the subsystem.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Explain the internals of rerere as in-code comments, while
sprinkling "NEEDSWORK" comment to highlight iffy bits and
questionable assumptions.
This one covers the "$GIT_DIR/MERGE_RR" file and in-core merge_rr
that are used to keep track of the status of "rerere" session in
progress.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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rerere_io_putconflict() wants to use a limited fixed-sized buf[] on
stack repeatedly to formulate a longer string, but its implementation
is doubly confusing:
* When it knows that the whole thing fits in buf[], it wants to
fill early part of buf[] with conflict marker characters,
followed by a LF and a NUL. It miscounts the size of the buffer
by 1 and does not use the last byte of buf[].
* When it needs to show only the early part of a long conflict
marker string (because the whole thing does not fit in buf[]), it
adjusts the number of bytes shown in the current round in a
strange-looking way. It makes sure that this round does not emit
all bytes and leaves at least one byte to the next round, so that
"it all fits" case will pick up the rest and show the terminating
LF. While this is correct, one needs to stop and think for a
while to realize why it is correct without an explanation.
Fix the benign off-by-one, and add comments to explain the
strange-looking size adjustment.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Explain the internals of rerere as in-code comments.
This one covers our thin I/O abstraction to read from either
a file or a memory while optionally writing out to a file.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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A conflicted index can have multiple stage #1 entries when dealing
with a criss-cross merge and using the "resolve" merge strategy.
Plug the leak by reading only the first one of the same stage
entries.
Strictly speaking, this fix does change the semantics, in that we
used to use the last stage #1 entry as the common ancestor when
doing the plain-vanilla three-way merge, but with the leak fix, we
will use the first stage #1 entry. But it is not a grave backward
compatibility breakage. Either way, we are arbitrarily picking one
of multiple stage #1 entries and using it, ignoring others, and
there is no meaning in the ordering of these stage #1 entries.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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handle_cache() loops 3 times starting from an index entry that is
unmerged, while ignoring an entry for a path that is different from
what we are looking for.
As the index is sorted, once we see a different path, we know we saw
all stages for the path we are interested in. Just loop while we
see the same path and then break, instead of continuing for 3 times.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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As the nature of the conflict marker line determines if there should
be a SP and label after it, the caller shouldn't have to pass the
parameter redundantly.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Instead of writing the hash for a conflict, a HT, and the path
with three separate write_in_full() calls, format them into a
single record into a strbuf and write it out in one go.
As a more recent "rerere remaining" codepath abuses the .util field
of the merge_rr data to store a sentinel token, make sure that
codepath does not call into this function (of course, "remaining" is
a read-only operation and currently does not call it).
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The MERGE_RR file records a collection of NUL-terminated entries,
each of which consists of
- a hash that identifies the conflict
- a HT
- the pathname
We used to read this piece-by-piece, and worse yet, read the
pathname part a byte at a time into a fixed buffer of size PATH_MAX.
Instead, read a whole entry using strbuf_getwholeline() and parse
out the fields. This way, we issue fewer read(2) calls and more
importantly we do not have to limit the pathname to PATH_MAX.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The merge_rr string list stores the conflict ID (a hexadecimal
string that is used to index into $GIT_DIR/rr-cache) in the .util
field of its elements, and when do_plain_rerere() resolves a
conflict, the field is cleared. Also, when rerere_forget()
recomputes the conflict ID to updates the preimage file, the
conflict ID for the path is updated.
We forgot to free the existing conflict ID when we did these two
operations.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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A conflicted index can have multiple stage #1 entries when dealing
with a criss-cross merge and using the "resolve" merge strategy.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When ac49f5ca (rerere "remaining", 2011-02-16) split out a new
helper function check_one_conflict() out of find_conflict()
function, so that the latter will use the returned value from the
new helper to update the loop control variable that is an index into
active_cache[], the new variable incremented the index by one too
many when it found a path with only stage #1 entry at the very end
of active_cache[].
This "strange" return value does not have any effect on the loop
control of two callers of this function, as they all notice that
active_nr+2 is larger than active_nr just like active_nr+1 is, but
nevertheless it puzzles the readers when they are trying to figure
out what the function is trying to do.
In fact, there is no need to do an early return. The code that
follows after skipping the stage #1 entry is fully prepared to
handle a case where the entry is at the very end of active_cache[].
Help future readers from unnecessary confusion by dropping an early
return. We skip the stage #1 entry, and if there are stage #2 and
stage #3 entries for the same path, we diagnose the path as
THREE_STAGED (otherwise we say PUNTED), and then we skip all entries
for the same path.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Documentation fix.
* mm/usage-log-l-can-take-regex:
log -L: improve error message on malformed argument
Documentation: change -L:<regex> to -L:<funcname>
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The old message did not mention the :regex:file form.
To avoid overly long lines, split the message into two lines (in case
item->string is long, it will be the only part truncated in a narrow
terminal).
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The old wording was somehow implying that <start> and <end> were not
regular expressions. Also, the common case is to use a plain function
name here so <funcname> makes sense (the fact that it is a regular
expression is documented in line-range-format.txt).
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The usual "git diff" when seeing a file turning into a directory
showed a patchset to remove the file and create all files in the
directory, but "git diff --no-index" simply refused to work. Also,
when asked to compare a file and a directory, imitate POSIX "diff"
and compare the file with the file with the same name in the
directory, instead of refusing to run.
* jc/diff-no-index-d-f:
diff-no-index: align D/F handling with that of normal Git
diff-no-index: DWIM "diff D F" into "diff D/F F"
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When a commit changes a path P that used to be a file to a directory
and creates a new path P/X in it, "git show" would say that file P
was removed and file P/X was created for such a commit.
However, if we compare two directories, D1 and D2, where D1 has a
file D1/P in it and D2 has a directory D2/P under which there is a
file D2/P/X, and ask "git diff --no-index D1 D2" to show their
differences, we simply get a refusal "file/directory conflict".
Surely, that may be what GNU diff does, but we can do better and it
is easy to do so.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git diff --no-index" was supposed to be a poor-man's approach to
allow using Git diff goodies outside of a Git repository, without
having to patch mainstream diff implementations.
Unlike a POSIX diff that treats "diff D F" (or "diff F D") as a
request to compare D/F and F (or F and D/F) when D is a directory
and F is a file, however, we did not accept such a command line and
instead barfed with "file/directory conflict".
Imitate what POSIX diff does and append the basename of the file
after the name of the directory before comparing.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The default $HOME/.gitconfig file created upon "git config --global"
that edits it had incorrectly spelled user.name and user.email
entries in it.
* oh/fix-config-default-user-name-section:
config: fix settings in default_user_config template
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The name (not user) and email setting should be in config section
"user" and not in "core" as documented in Documentation/config.txt.
Signed-off-by: Ossi Herrala <oherrala@gmail.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git commit --date=now" or anything that relies on approxidate lost
the daylight-saving-time offset.
* jc/epochtime-wo-tz:
parse_date_basic(): let the system handle DST conversion
parse_date_basic(): return early when given a bogus timestamp
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The function parses the input to compute the broken-down time in
"struct tm", and the GMT timezone offset. If the timezone offset
does not exist in the input, the broken-down time is turned into the
number of seconds since epoch both in the current timezone and in
GMT and the offset is computed as their difference.
However, we forgot to make sure tm.tm_isdst is set to -1 (i.e. let
the system figure out if DST is in effect in the current timezone
when turning the broken-down time to the number of seconds since
epoch); it is done so at the beginning of the function, but a call
to match_digit() in the function can lead to a call to gmtime_r() to
clobber the field.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Diagnosed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When the input does not have GMT timezone offset, the code computes
it by computing the local and GMT time for the given timestamp. But
there is no point doing so if the given timestamp is known to be a
bogus one.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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An earlier update to the parser that disects a URL broke an
address, followed by a colon, followed by an empty string (instead
of the port number), e.g. ssh://example.com:/path/to/repo.
* tb/connect-ipv6-parse-fix:
connect.c: ignore extra colon after hostname
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Ignore an extra ':' at the end of the hostname in URL's like
"ssh://example.com:/path/to/repo"
The colon is meant to separate a port number from the hostname.
If the port is empty, the colon should be ignored, see RFC 3986.
It had been working for URLs with ssh:// scheme, but was unintentionally
broken in 86ceb3, "allow ssh://user@[2001:db8::1]/repo.git"
Reported-by: Reid Woodbury Jr. <reidw@rawsound.com>
Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The completion script (in contrib/) contaminated global namespace
and clobbered on a shell variable $x.
* ma/bash-completion-leaking-x:
completion: fix global bash variable leak on __gitcompappend
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The "git push --signed" protocol extension did not limit what the
"nonce" that is a server-chosen string can contain or how long it
can be, which was unnecessarily lax. Limit both the length and the
alphabet to a reasonably small space that can still have enough
entropy.
* jc/push-cert:
push --signed: tighten what the receiving end can ask to sign
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Instead of blindly trusting the receiving side to give us a sensible
nonce to sign, limit the length (max 256 bytes) and the alphabet
(alnum and a few selected punctuations, enough to encode in base64)
that can be used in nonce.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"diff-highlight" (in contrib/) used to show byte-by-byte
differences, which meant that multi-byte characters can be chopped
in the middle. It learned to pay attention to character boundaries
(assuming the UTF-8 payload).
* jk/colors:
diff-highlight: do not split multibyte characters
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When the input is UTF-8 and Perl is operating on bytes instead of
characters, a diff that changes one multibyte character to another
that shares an initial byte sequence will result in a broken diff
display as the common byte sequence prefix will be separated from
the rest of the bytes in the multibyte character.
For example, if a single line contains only the unicode character
U+C9C4 (encoded as UTF-8 0xEC, 0xA7, 0x84) and that line is then
changed to the unicode character U+C9C0 (encoded as UTF-8 0xEC,
0xA7, 0x80), when operating on bytes diff-highlight will show only
the single byte change from 0x84 to 0x80 thus creating invalid UTF-8
and a broken diff display.
Fix this by putting Perl into character mode when splitting the line
and then back into byte mode after the split is finished.
The utf8::xxx functions require Perl 5.8 so we require that as well.
Also, since we are mucking with code in the split_line function, we
change a '*' quantifier to a '+' quantifier when matching the $COLOR
expression which has the side effect of speeding everything up while
eliminating useless '' elements in the returned array.
Reported-by: Yi EungJun <semtlenori@gmail.com>
Signed-off-by: Kyle J. McKay <mackyle@gmail.com>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Test fixes.
* jk/test-annoyances:
t5551: make EXPENSIVE test cheaper
t5541: move run_with_cmdline_limit to test-lib.sh
t: pass GIT_TRACE through Apache
t: redirect stderr GIT_TRACE to descriptor 4
t: translate SIGINT to an exit
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We create 50,000 tags to check that we don't overflow the
command-line of fetch-pack. But by using run_with_cmdline_limit,
we can get the same effect with a much smaller number of
tags. This makes the test fast enough that we can drop the
EXPENSIVE prereq, which means people will actually run it.
It was not documented to do so, but this test was also the
only test of a clone-over-http that requires multiple POSTs
during the conversation. We can continue to test that by
dropping http.postbuffer to its minimum size, and checking
that we get two POSTs.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We use this to test http pushing with a restricted
commandline. Other scripts (like t5551, which does http
fetching) will want to use it, too.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Apache removes GIT_TRACE from the environment before running
git-http-backend. This can make it hard to debug the server
side of an http session. Let's let it through.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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If you run a test script like:
GIT_TRACE=1 ./t0061-run-command.sh
you may get test failures, because some tests capture and
check the stderr output from git commands (and with
GIT_TRACE set to 1, the trace output will be included
there).
When we see GIT_TRACE set like this, we print a warning to
the user. However, we can do even better than that by just
pointing it to descriptor 4, which all tests leave connected
to the test script's stderr. That's likely what the user
intended (and any scripts that do want to see GIT_TRACE
output will set GIT_TRACE themselves).
Not only does this avoid false negatives in the tests, but
it means the user will actually see trace output for git
calls that redirect their stderr (whereas before, it was
sometimes confusingly buried in a file).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Right now if a test script receives SIGINT (e.g., because a
test was hanging and the user hit ^C), the shell exits
immediately. This can be annoying if the test script did any
global setup, like starting apache or git-daemon, as it will
not have an opportunity to clean up after itself. A
subsequent run of the test won't be able to start its own
daemon, and will either fail or skip the tests.
Instead, let's trap SIGINT to make sure we do a clean
shutdown, and just chain it to a normal exit (which will
trigger any cleanup).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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