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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When "git fetch" encounters repositories with too many references, the
command line of "fetch-pack" that is run by a helper e.g. remote-curl, may
fail to hold all of them. Now such an internal invocation can feed the
references through the standard input of "fetch-pack".
By Ivan Todoroski
* it/fetch-pack-many-refs:
remote-curl: main test case for the OS command line overflow
fetch-pack: test cases for the new --stdin option
remote-curl: send the refs to fetch-pack on stdin
fetch-pack: new --stdin option to read refs from stdin
Conflicts:
t/t5500-fetch-pack.sh
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When "git commit --template F" errors out because the user did not
touch the message, it claimed that it aborts due to "empty message",
which was utterly wrong.
By Junio C Hamano (4) and Adam Monsen (1)
* jc/commit-unedited-template:
Documentation/git-commit: rephrase the "initial-ness" of templates
git-commit.txt: clarify -t requires editing message
commit: rephrase the error when user did not touch templated log message
commit: do not trigger bogus "has templated message edited" check
t7501: test the right kind of breakage
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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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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* maint-1.7.8:
Documentation/gitweb: trivial English fixes
fetch/receive: remove over-pessimistic connectivity check
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* dw/gitweb-doc-grammo:
Documentation/gitweb: trivial English fixes
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* cn/maint-rev-list-doc:
Documentation: use {asterisk} in rev-list-options.txt when needed
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* tr/maint-bundle-long-subject:
t5704: match tests to modern style
strbuf: improve strbuf_get*line documentation
bundle: use a strbuf to scan the log for boundary commits
bundle: put strbuf_readline_fd in strbuf.c with adjustments
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The description of "commit -t <file>" said the file is used "as the
initial version" of the commit message, but in the context of an SCM,
"version" is a loaded word that can needlesslyl confuse readers.
Explain the purpose of the mechanism without using "version".
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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If a remote repo has too many tags (or branches), cloning it over the
smart HTTP transport can fail because remote-curl.c puts all the refs
from the remote repo on the fetch-pack command line. This can make the
command line longer than the global OS command line limit, causing
fetch-pack to fail.
This is especially a problem on Windows where the command line limit is
orders of magnitude shorter than Linux. There are already real repos out
there that msysGit cannot clone over smart HTTP due to this problem.
Here is an easy way to trigger this problem:
git init too-many-refs
cd too-many-refs
echo bla > bla.txt
git add .
git commit -m test
sha=$(git rev-parse HEAD)
tag=$(perl -e 'print "bla" x 30')
for i in `seq 50000`; do
echo $sha refs/tags/$tag-$i >> .git/packed-refs
done
Then share this repo over the smart HTTP protocol and try cloning it:
$ git clone http://localhost/.../too-many-refs/.git
Cloning into 'too-many-refs'...
fatal: cannot exec 'fetch-pack': Argument list too long
50k tags is obviously an absurd number, but it is required to
demonstrate the problem on Linux because it has a much more generous
command line limit. On Windows the clone fails with as little as 500
tags in the above loop, which is getting uncomfortably close to the
number of tags you might see in real long lived repos.
This is not just theoretical, msysGit is already failing to clone our
company repo due to this. It's a large repo converted from CVS, nearly
10 years of history.
Four possible solutions were discussed on the Git mailing list (in no
particular order):
1) Call fetch-pack multiple times with smaller batches of refs.
This was dismissed as inefficient and inelegant.
2) Add option --refs-fd=$n to pass a an fd from where to read the refs.
This was rejected because inheriting descriptors other than
stdin/stdout/stderr through exec() is apparently problematic on Windows,
plus it would require changes to the run-command API to open extra
pipes.
3) Add option --refs-from=$tmpfile to pass the refs using a temp file.
This was not favored because of the temp file requirement.
4) Add option --stdin to pass the refs on stdin, one per line.
In the end this option was chosen as the most efficient and most
desirable from scripting perspective.
There was however a small complication when using stdin to pass refs to
fetch-pack. The --stateless-rpc option to fetch-pack also uses stdin for
communication with the remote server.
If we are going to sneak refs on stdin line by line, it would have to be
done very carefully in the presence of --stateless-rpc, because when
reading refs line by line we might read ahead too much data into our
buffer and eat some of the remote protocol data which is also coming on
stdin.
One way to solve this would be to refactor get_remote_heads() in
fetch-pack.c to accept a residual buffer from our stdin line parsing
above, but this function is used in several places so other callers
would be burdened by this residual buffer interface even when most of
them don't need it.
In the end we settled on the following solution:
If --stdin is specified without --stateless-rpc, fetch-pack would read
the refs from stdin one per line, in a script friendly format.
However if --stdin is specified together with --stateless-rpc,
fetch-pack would read the refs from stdin in packetized format
(pkt-line) with a flush packet terminating the list of refs. This way we
can read the exact number of bytes that we need from stdin, and then
get_remote_heads() can continue reading from the same fd without losing
a single byte of remote protocol data.
This way the --stdin option only loses generality and scriptability when
used together with --stateless-rpc, which is not easily scriptable
anyway because it also uses pkt-line when talking to the remote server.
Signed-off-by: Ivan Todoroski <grnch@gmx.net>
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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* jc/maint-merge-autoedit:
merge: backport GIT_MERGE_AUTOEDIT support
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Make it clear that, when using commit --template, the message *must* be
changed or the commit will be aborted.
Helped-by: Junio C Hamano <gitster@pobox.com>
Helped-by: Ivan Heffner <iheffner@gmail.com>
Signed-off-by: Adam Monsen <haircut@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* maint:
string-list: document that string_list_insert() inserts unique strings
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Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
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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Found by running this command:
$ git ls-files -z|xargs -0 perl -0777 -n \
-e 'while (/\b(then?|[iao]n|i[fst]|but|f?or|at|and|[dt]o)\s+\1\b/gims)' \
-e ' {' \
-e ' $n = ($` =~ tr/\n/\n/ + 1);' \
-e ' ($v = $&) =~ s/\n/\\n/g;' \
-e ' print "$ARGV:$n:$v\n";' \
-e ' }'
Why not just git grep -E ...?
That wouldn't work then the doubled words are separated by a newline.
This is derived from a Makefile syntax-check rule in gnulib's maint.mk:
http://git.sv.gnu.org/cgit/gnulib.git/tree/top/maint.mk
Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Jim Meyering <meyering@redhat.com>
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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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* ph/rerere-doc:
rerere: Document 'rerere remaining'
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All of the other options were included in the synopsis, so it makes
sense to include these as well.
Signed-off-by: Mark Lodato <lodatom@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Previously GIT_EDITOR was not listed in git(1) "Environment Variables" section,
which could be very confusing to users. Include it in "other" subsection along
with a link to git-var(1), since that is the page that fully describes all
places where editor can be set and also their preference order.
Also, git-var(1) did not say that hardcoded fallback 'vi' may have been changed
at build time. A user could be puzzled if 'nano' pops up even when none of the
mentioned environment vars or config.editor are set. Clarify this.
Ideally, the build system should be changed to reflect the chosen fallback
editor when creating the man pages. Not sure if that is even possible though.
Signed-off-by: Rodrigo Silva (MestreLion) <linux@rodrigosilva.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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An alphabetic ordered list (a.) is converted to numerical in
the man page (1.) so context comments naming 'a' were confusing,
fix that by not using ordered list notation for 'a' anb 'b' items.
Signed-off-by: Nelson Benitez Leon <nelsonjesus.benitez@seap.minhap.es>
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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Typofix.
* dw/gitweb-doc-grammo:
Documentation/gitweb: trivial English fixes
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Change "it's" to "its" where a possessive is intended. Also add two
missing "the" that were noticed by Ben Walton.
Signed-off-by: David Waitzman <djw@bbn.com>
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Even though 1.7.9.x series does not open the editor by default
when merging in general, it does do so in one occassion: when
merging an annotated tag. And worse yet, there is no good way
for older scripts to decline this.
Backport the support for GIT_MERGE_AUTOEDIT environment variable
from 1.7.10 track to help those stuck on 1.7.9.x maintenance
track.
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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* th/mergetools-deltawalker:
Documentation/difftool: add deltawalker to list of valid diff tools
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* th/doc-diff-submodule-option:
Documentation/diff-options: reword description of --submodule option
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deltawalker has been supported since 284a126c3ef3, but was not added
to the list of valid diff tools reported by 'git difftool --help'.
Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
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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The previous description was confusing. This rewrite makes it easier
to understand.
Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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By Phil Hord
* ph/rerere-doc:
rerere: Document 'rerere remaining'
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We have had these options as harmless no-op for more than 3 years without
officially deprecating them. Let's announce the deprecation and start
warning against their use, but without failing the command just not yet,
so that we can later repurpose the option if we want to in the future.
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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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This adds the 'remaining' command to the documentation of
'git rerere'. This command was added in ac49f5ca (Feb 16 2011;
Martin von Zweigbergk <martin.von.zweigbergk@gmail.com>) but
it was never documented.
Touch up the other rerere commands to reduce noise.
First noticed by Vincent van Ravesteijn.
Signed-off-by: Phil Hord <phil.hord@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Junio C Hamano
Ivan Todoroski
Adam Monsen
Heiko Voigt
Jim Meyering
Mark Lodato
Rodrigo Silva (MestreLion)
Nelson Benitez Leon
D Waitzman
Tim Henigan
Phil Hord