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Commit dae556b (environment: add global variable to disable replacement)
adds a variable to enable/disable replacement, and it is enabled by
default for most commands.
So there is no way to disable it for some commands, which is annoying
when we want to get information about a commit that has been replaced.
For example:
$ git cat-file -p N
would output information about the replacement commit if commit N is
replaced.
With the "--no-replace-objects" option that this patch adds it is
possible to get information about the original commit using:
$ git --no-replace-objects cat-file -p N
While at it, let's add some documentation about this new option in the
"git replace" man page too.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* db/vcs-helper:
Makefile: remove remnant of separate http/https/ftp helpers
Use a clearer style to issue commands to remote helpers
Make the "traditionally-supported" URLs a special case
Makefile: install hardlinks for git-remote-<scheme> supported by libcurl if possible
Makefile: do not link three copies of git-remote-* programs
Makefile: git-http-fetch does not need expat
http-fetch: Fix Makefile dependancies
Add transport native helper executables to .gitignore
git-http-fetch: not a builtin
Use an external program to implement fetching with curl
Add support for external programs for handling native fetches
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It's now similar wrapped the same way as in Documentation/git.txt, and
fits in a 67 characters wide terminal.
Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Convert git update-server-info to a built-in command and use parseopt.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* cc/replace:
t6050: check pushing something based on a replaced commit
Documentation: add documentation for "git replace"
Add git-replace to .gitignore
builtin-replace: use "usage_msg_opt" to give better error messages
parse-options: add new function "usage_msg_opt"
builtin-replace: teach "git replace" to actually replace
Add new "git replace" command
environment: add global variable to disable replacement
mktag: call "check_sha1_signature" with the replacement sha1
replace_object: add a test case
object: call "check_sha1_signature" with the replacement sha1
sha1_file: add a "read_sha1_file_repl" function
replace_object: add mechanism to replace objects found in "refs/replace/"
refs: add a "for_each_replace_ref" function
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* js/run-command-updates:
api-run-command.txt: describe error behavior of run_command functions
run-command.c: squelch a "use before assignment" warning
receive-pack: remove unnecessary run_status report
run_command: report failure to execute the program, but optionally don't
run_command: encode deadly signal number in the return value
run_command: report system call errors instead of returning error codes
run_command: return exit code as positive value
MinGW: simplify waitpid() emulation macros
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This splits up git-http-fetch so that it isn't built-in.
It also removes the general dependency on curl, because it is no
longer used by any built-in code. Because they are no longer LIB_OBJS,
add LIB_H to the dependencies of http-related object files, and remove
http.h from the dependencies of transport.o
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* 'js/run-command-updates' (early part):
MinGW: truncate exit()'s argument to lowest 8 bits
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* tr/die_errno:
Use die_errno() instead of die() when checking syscalls
Convert existing die(..., strerror(errno)) to die_errno()
die_errno(): double % in strerror() output just in case
Introduce die_errno() that appends strerror(errno) to die()
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In the case where a program was not found, it was still the task of the
caller to report an error to the user. Usually, this is an interesting case
but only few callers actually reported a specific error (though many call
sites report a generic error message regardless of the cause).
With this change the error is reported by run_command, but since there is
one call site in git.c that does not want that, an option is added to
struct child_process, which is used to turn the error off.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The motivation for this change is that system call failures are serious
errors that should be reported to the user, but only few callers took the
burden to decode the error codes that the functions returned into error
messages.
If at all, then only an unspecific error message was given. A prominent
example is this:
$ git upload-pack . | :
fatal: unable to run 'git-upload-pack'
In this example, git-upload-pack, the external command invoked through the
git wrapper, dies due to SIGPIPE, but the git wrapper does not bother to
report the real cause. In fact, this very error message is copied to the
syslog if git-daemon's client aborts the connection early.
With this change, system call failures are reported immediately after the
failure and only a generic failure code is returned to the caller. In the
above example the error is now to the point:
$ git upload-pack . | :
error: git-upload-pack died of signal
Note that there is no error report if the invoked program terminated with
a non-zero exit code, because it is reasonable to expect that the invoked
program has already reported an error. (But many run_command call sites
nevertheless write a generic error message.)
There was one special return code that was used to identify the case where
run_command failed because the requested program could not be exec'd. This
special case is now treated like a system call failure with errno set to
ENOENT. No error is reported in this case, because the call site in git.c
expects this as a normal result. Therefore, the callers that carefully
decoded the return value still check for this condition.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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As a general guideline, functions in git's code return zero to indicate
success and negative values to indicate failure. The run_command family of
functions followed this guideline. But there are actually two different
kinds of failure:
- failures of system calls;
- non-zero exit code of the program that was run.
Usually, a non-zero exit code of the program is a failure and means a
failure to the caller. Except that sometimes it does not. For example, the
exit code of merge programs (e.g. external merge drivers) conveys
information about how the merge failed, and not all exit calls are
actually failures.
Furthermore, the return value of run_command is sometimes used as exit
code by the caller.
This change arranges that the exit code of the program is returned as a
positive value, which can now be regarded as the "result" of the function.
System call failures continue to be reported as negative values.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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For some reason, MinGW's bash cannot reliably detect failure of the child
process if a negative value is passed to exit(). This fixes it by
truncating the exit code in all calls of exit().
This issue was worked around in run_builtin() of git.c (2488df84 builtin
run_command: do not exit with -1, 2007-11-15). This workaround is no longer
necessary and is reverted.
Suggested-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When creating a new argv array from a configured alias and the supplied
command line arguments, the new argv was allocated with one element too
many. Since the first element of the original argv array is skipped when
copying it to the new_argv, the number of elements that are allocated
should be reduced by one. 'count' is the number of elements that new_argv
contains, and *argcp is the number of elements in the original argv array.
So the total allocation (including the terminating NULL entry) for the
new_argv array should be:
count + (*argcp - 1) + 1
Also, the explicit assignment of the NULL terminating entry can be avoided
by just copying it over from the original argv array.
Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Change calls to die(..., strerror(errno)) to use the new die_errno().
In the process, also make slight style adjustments: at least state
_something_ about the function that failed (instead of just printing
the pathname), and put paths in single quotes.
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This command can only be used now to list replace refs in
"refs/replace/" and to delete them.
The option to list replace refs is "-l".
The option to delete replace refs is "-d".
The behavior should be consistent with how "git tag" and "git branch"
are working.
The code has been copied from "builtin-tag.c" by Kristian Høgsberg
<krh@redhat.com> and Carlos Rica <jasampler@gmail.com> that was itself
based on git-tag.sh and mktag.c by Linus Torvalds.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
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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Essentially; s/type* /type */ as per the coding guidelines.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Mike Ralphson <mike@abacus.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* cc/bisect-filter: (21 commits)
rev-list: add "int bisect_show_flags" in "struct rev_list_info"
rev-list: remove last static vars used in "show_commit"
list-objects: add "void *data" parameter to show functions
bisect--helper: string output variables together with "&&"
rev-list: pass "int flags" as last argument of "show_bisect_vars"
t6030: test bisecting with paths
bisect: use "bisect--helper" and remove "filter_skipped" function
bisect: implement "read_bisect_paths" to read paths in "$GIT_DIR/BISECT_NAMES"
bisect--helper: implement "git bisect--helper"
bisect: use the new generic "sha1_pos" function to lookup sha1
rev-list: call new "filter_skip" function
patch-ids: use the new generic "sha1_pos" function to lookup sha1
sha1-lookup: add new "sha1_pos" function to efficiently lookup sha1
rev-list: pass "revs" to "show_bisect_vars"
rev-list: make "show_bisect_vars" non static
rev-list: move code to show bisect vars into its own function
rev-list: move bisect related code into its own file
rev-list: make "bisect_list" variable local to "cmd_rev_list"
refs: add "for_each_ref_in" function to refactor "for_each_*_ref" functions
quote: add "sq_dequote_to_argv" to put unwrapped args in an argv array
...
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This patch implements a new "git bisect--helper" builtin plumbing
command that will be used to migrate "git-bisect.sh" to C.
We start by implementing only the "--next-vars" option that will
read bisect refs from "refs/bisect/", and then compute the next
bisect step, and output shell variables ready to be eval'ed by
the shell.
At this step, "git bisect--helper" ignores the paths that may
have been put in "$GIT_DIR/BISECT_NAMES". This will be fixed in a
later patch.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This can be used in GUIs to open installed HTML documentation in the
browser.
Signed-off-by: Markus Heidelberg <markus.heidelberg@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* jk/maint-cleanup-after-exec-failure:
git: use run_command() to execute dashed externals
run_command(): help callers distinguish errors
run_command(): handle missing command errors more gracefully
git: s/run_command/run_builtin/
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We used to simply try calling execvp(); if it succeeded, then we were done
and the new program was running. If it didn't, then we knew that it wasn't
a valid command.
Unfortunately, this interacted badly with the new pager handling. Now that
git remains the parent process and the pager is spawned, git has to hang
around until the pager is finished. We install an atexit handler to do
this, but that handler never gets called if we successfully run execvp.
You could see this behavior by running any dashed external using a pager
(e.g., "git -p stash list"). The command finishes running, but the pager
is still going. In the case of less, it then gets an error reading from
the terminal and exits, potentially leaving the terminal in a broken state
(and not showing the output).
This patch just uses run_command() to try running the dashed external. The
parent git process then waits for the external process to complete and
then handles the pager cleanup as it would for an internal command.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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There is a static function called run_command which
conflicts with the library function in run-command.c; this
isn't a problem currently, but prevents including
run-command.h in git.c.
This patch just renames the static function to something
more specific and non-conflicting.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This simplifies the calling code.
Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This commit moves the code that computes the dirname of argv[0]
from git.c's main() to git_set_argv0_path() and renames the function
to git_extract_argv0_path(). This makes the code in git.c's main
less cluttered, and we can use the dirname computation from other
main() functions too.
[ spr:
- split Steve's original commit and wrote new commit message.
- Integrated Johannes Schindelin's
cca1704897e7fdb182f68d4c48a437c5d7bc5203 while rebasing onto master.
]
Signed-off-by: Steve Haslam <shaslam@lastminute.com>
Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Acked-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* as/autocorrect-alias:
git.c: make autocorrected aliases work
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LF at the end of format strings given to die() is redundant because
die already adds one on its own.
Signed-off-by: Alexander Potashev <aspotashev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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help_unknown_cmd() is able to autocorrect a command to an alias, and not
only to internal or external commands. However, main() was not passing the
autocorrected command through handle_alias(), hence it failed if it was an
alias.
This commit makes the autocorrected command go through handle_alias(), once
handle_internal_command() and execv_dashed_external() have been tried. Since
this is done twice in main() now, moved that logic to a new run_argv()
function.
Also, print the same "Expansion of alias 'x' failed" message when the alias
was autocorrected, rather than a generic "Failed to run command 'x'".
Signed-off-by: Adeodato Simó <dato@net.com.org.es>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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It is not a good practice to prefer performance over readability in
something as performance uncritical as finding the trailing slash
of argv[0].
So avoid head-scratching by making the loop user-readable, and not
hyper-performance-optimized.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This comes from conversation at the GitTogether where we thought it would
be helpful to be able to teach people to 'stage' files because it tends
to cause confusion when told that they have to keep 'add'ing them.
This continues the movement to start referring to the index as a
staging area (eg: the --staged alias to 'git diff'). Also adds a
doc file for 'git stage' that basically points to the docs for
'git add'.
Signed-off-by: Scott Chacon <schacon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Many call sites use strbuf_init(&foo, 0) to initialize local
strbuf variable "foo" which has not been accessed since its
declaration. These can be replaced with a static initialization
using the STRBUF_INIT macro which is just as readable, saves a
function call, and takes up fewer lines.
Signed-off-by: Brandon Casey <casey@nrlssc.navy.mil>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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* jc/alternate-push:
push: receiver end advertises refs from alternate repositories
push: prepare sender to receive extended ref information from the receiver
receive-pack: make it a builtin
is_directory(): a generic helper function
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* maint:
Update release notes for 1.6.0.3
checkout: Do not show local changes when in quiet mode
for-each-ref: Fix --format=%(subject) for log message without newlines
git-stash.sh: don't default to refs/stash if invalid ref supplied
maint: check return of split_cmdline to avoid bad config strings
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As the testcase demonstrates, it's possible for split_cmdline to return -1 and
deallocate any memory it's allocated, if the config string is missing an end
quote. In both the cases below, which are the only calling sites, the return
isn't checked, and using the pointer causes a pretty immediate segfault.
Signed-off-by: Deskin Miller <deskinm@umich.edu>
Acked-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
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Some places use the standard malloc/strdup without checking if the
allocation was successful; they should use xmalloc/xstrdup that
check the memory allocation result.
Signed-off-by: Dotan Barak <dotanba@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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It is a good thing to do in general, but more importantly, transport
routines can only be used by built-ins, which is what I'll be adding next.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* ar/autospell:
Add help.autocorrect to enable/disable autocorrecting
git wrapper: DWIM mistyped commands
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This patch introduces a modified Damerau-Levenshtein algorithm into
Git's code base, and uses it with the following penalties to show some
similar commands when an unknown command was encountered:
swap = 0, insertion = 1, substitution = 2, deletion = 4
A typical output would now look like this:
$ git sm
git: 'sm' is not a git-command. See 'git --help'.
Did you mean one of these?
am
rm
The cut-off is at similarity rating 6, which was empirically determined
to give sensible results.
As a convenience, if there is only one candidate, Git continues under
the assumption that the user mistyped it. Example:
$ git reabse
WARNING: You called a Git program named 'reabse', which does
not exist.
Continuing under the assumption that you meant 'rebase'
[...]
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This fixes "git diff", "git diff-files" and "git diff-index" to work
correctly under worktree setup. Because diff* family works in many modes
and not all of them require worktree, Junio made a nice summary
(with a little modification from me):
* diff-files is about comparing with work tree, so it obviously needs a
work tree;
* diff-index also does, except "diff-index --cached" or "diff --cached TREE"
* no-index is about random files outside git context, so it obviously
doesn't need any work tree;
* comparing two (or more) trees doesn't;
* comparing two blobs doesn't;
* comparing a blob with a random file doesn't;
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This reverts commit daa0cc9a92c9c2c714aa5f7da6d0ff65b93e0698.
It was a stupid idea to do this; when run as a log-in shell,
it is spawned with argv[0] set to "-git-shell", so the usual
name-based dispatch would not work to begin with.
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This trivially makes "git-shell" a built-in. It makes the executable even
fatter, though.
And MinGW removed git-shell only because of the funny dependencies; there
is no reason to do so anymore.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Tested-on-MinGW-by: Johannes Sixt <johannes.sixt@telecom.at>
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We will need the command invocation path in system_path(). This path was
passed to setup_path(), but system_path() can be called earlier, for
example via:
main
commit_pager_choice
setup_pager
git_config
git_etc_gitconfig
system_path
Therefore, we introduce git_set_argv0_path() and call it as soon as
possible.
Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This reverts commit c8af1de9cfa0a5678ae766777e0f905e60b69fda.
The change was immensely unpopular, and poeple who would really want to
page can use pager.status configuration.
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* mv/merge-in-c:
reduce_heads(): protect from duplicate input
reduce_heads(): thinkofix
Add a new test for git-merge-resolve
t6021: add a new test for git-merge-resolve
Teach merge.log to "git-merge" again
Build in merge
Fix t7601-merge-pull-config.sh on AIX
git-commit-tree: make it usable from other builtins
Add new test case to ensure git-merge prepends the custom merge message
Add new test case to ensure git-merge reduces octopus parents when possible
Introduce reduce_heads()
Introduce get_merge_bases_many()
Add new test to ensure git-merge handles more than 25 refs.
Introduce get_octopus_merge_bases() in commit.c
git-fmt-merge-msg: make it usable from other builtins
Move read_cache_unmerged() to read-cache.c
Add new test to ensure git-merge handles pull.twohead and pull.octopus
Move parse-options's skip_prefix() to git-compat-util.h
Move commit_list_count() to commit.c
Move split_cmdline() to alias.c
Conflicts:
Makefile
parse-options.c
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Mentored-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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There is great debate over whether some commands should set
up a pager automatically. This patch allows individuals to
set their own pager preferences for each command, overriding
the default. For example, to disable the pager for git
status:
git config pager.status false
If "--pager" or "--no-pager" is specified on the command
line, it takes precedence over the config option.
There are two caveats:
- you can turn on the pager for plumbing commands.
Combined with "core.pager = always", this will probably
break a lot of things. Don't do it.
- This only works for builtin commands. The reason is
somewhat complex:
Calling git_config before we do setup_git_directory
has bad side effects, because it wants to know where
the git_dir is to find ".git/config". Unfortunately,
we cannot call setup_git_directory indiscriminately,
because some builtins (like "init") break if we do.
For builtins, this is OK, since we can just wait until
after we call setup_git_directory. But for aliases, we
don't know until we expand (recursively) which command
we're doing. This should not be a huge problem for
aliases, which can simply use "--pager" or "--no-pager"
in the alias as appropriate.
For external commands, however, we don't know we even
have an external command until we exec it, and by then
it is too late to check the config.
An alternative approach would be to have a config mode
where we don't bother looking at .git/config, but only
at the user and system config files. This would make the
behavior consistent across builtins, aliases, and
external commands, at the cost of not allowing per-repo
pager config for at all.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* j6t/mingw: (38 commits)
compat/pread.c: Add a forward declaration to fix a warning
Windows: Fix ntohl() related warnings about printf formatting
Windows: TMP and TEMP environment variables specify a temporary directory.
Windows: Make 'git help -a' work.
Windows: Work around an oddity when a pipe with no reader is written to.
Windows: Make the pager work.
When installing, be prepared that template_dir may be relative.
Windows: Use a relative default template_dir and ETC_GITCONFIG
Windows: Compute the fallback for exec_path from the program invocation.
Turn builtin_exec_path into a function.
Windows: Use a customized struct stat that also has the st_blocks member.
Windows: Add a custom implementation for utime().
Windows: Add a new lstat and fstat implementation based on Win32 API.
Windows: Implement a custom spawnve().
Windows: Implement wrappers for gethostbyname(), socket(), and connect().
Windows: Work around incompatible sort and find.
Windows: Implement asynchronous functions as threads.
Windows: Disambiguate DOS style paths from SSH URLs.
Windows: A rudimentary poll() emulation.
Windows: Implement start_command().
...
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Christian Couder
Junio C Hamano
Matthieu Moy
René Scharfe
Linus Torvalds
Johannes Sixt
Brandon Casey
Thomas Rast
Felipe Contreras
Mike Ralphson
Markus Heidelberg
Jeff King
Steffen Prohaska
Steve Haslam
Alexander Potashev
Adeodato Simó
Johannes Schindelin
Alex Riesen
Scott Chacon
Brandon Casey
Shawn O. Pearce
Deskin Miller
Dotan Barak
Nguyễn Thái Ngọc Duy
Johannes Sixt
Miklos Vajna