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Clemens Buchacher fc1b56f054 notice error exit from pager 
If the pager fails to run, git produces no output, e.g.:

 $ GIT_PAGER=not-a-command git log

The error reporting fails for two reasons:

 (1) start_command: There is a mechanism that detects errors during
     execvp introduced in 2b541bf8 (start_command: detect execvp
     failures early). The child writes one byte to a pipe only if
     execvp fails.  The parent waits for either EOF, when the
     successful execvp automatically closes the pipe (see
     FD_CLOEXEC in fcntl(1)), or it reads a single byte, in which
     case it knows that the execvp failed. This mechanism is
     incompatible with the workaround introduced in 35ce8622
     (pager: Work around window resizing bug in 'less'), which
     waits for input from the parent before the exec. Since both
     the parent and the child are waiting for input from each
     other, that would result in a deadlock. In order to avoid
     that, the mechanism is disabled by closing the child_notifier
     file descriptor.

 (2) finish_command: The parent correctly detects the 127 exit
     status from the child, but the error output goes nowhere,
     since by that time it is already being redirected to the
     child.

No simple solution for (1) comes to mind.

Number (2) can be solved by not sending error output to the pager.
Not redirecting error output to the pager can result in the pager
overwriting error output with standard output, however.

Since there is no reliable way to handle error reporting in the
parent, produce the output in the child instead.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-01 16:21:55 -07:00
block-sha1
builtin Merge branch 'maint-1.7.5' into maint 2011-06-29 16:41:55 -07:00
compat compat/fnmatch/fnmatch.c: give a fall-back definition for NULL 2011-05-26 09:25:47 -07:00
contrib Merge branch 'maint' 2011-06-26 12:09:11 -07:00
Documentation doc/fast-import: clarify notemodify command 2011-07-22 13:58:35 -07:00
git_remote_helpers
git-gui
gitk-git
gitweb Merge branch 'maint' 2011-06-21 14:56:59 -07:00
perl
po
ppc
t tests: print failed test numbers at the end of the test run 2011-07-24 11:55:14 -07:00
templates
vcs-svn
xdiff
.gitattributes
.gitignore Merge branch 'jn/gitweb-js' 2011-05-26 10:31:57 -07:00
.mailmap
abspath.c
aclocal.m4
advice.c
advice.h
alias.c
alloc.c
archive-tar.c
archive-zip.c
archive.c
archive.h
attr.c
attr.h
base85.c
bisect.c
bisect.h
blob.c
blob.h
branch.c
branch.h
builtin.h
bundle.c
bundle.h
cache-tree.c
cache-tree.h
cache.h Merge branch 'jk/maint-config-alias-fix' into maint 2011-06-01 14:05:22 -07:00
check_bindir
check-builtins.sh
check-racy.c
color.c
color.h
combine-diff.c
command-list.txt
commit.c
commit.h Merge branch 'jk/format-patch-am' 2011-05-31 12:19:11 -07:00
config.c git-config: Remove extra whitespaces 2011-07-19 13:43:34 -07:00
config.mak.in Merge branch 'kk/maint-prefix-in-config-mak' into maint 2011-06-01 14:02:39 -07:00
configure.ac
connect.c Merge branch 'jk/git-connection-deadlock-fix' into maint-1.7.4 2011-05-26 10:28:10 -07:00
convert.c
copy.c
COPYING
csum-file.c
csum-file.h
ctype.c
daemon.c
date.c
decorate.c
decorate.h
delta.h
diff-delta.c
diff-lib.c Merge branch 'jk/diff-not-so-quick' 2011-06-06 11:40:14 -07:00
diff-no-index.c
diff.c Merge branch 'jk/diff-not-so-quick' 2011-06-06 11:40:14 -07:00
diff.h Merge branch 'jk/diff-not-so-quick' 2011-06-06 11:40:14 -07:00
diffcore-break.c
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c
diffcore-rename.c diffcore-rename.c: avoid set-but-not-used warning 2011-06-01 13:54:17 -07:00
diffcore.h
dir.c
dir.h
editor.c
entry.c
environment.c
exec_cmd.c
exec_cmd.h
fast-import.c
fetch-pack.h
fixup-builtins
fsck.c Merge branch 'jm/maint-misc-fix' into maint 2011-05-30 00:09:41 -07:00
fsck.h
generate-cmdlist.sh
gettext.c
gettext.h
git-add--interactive.perl
git-am.sh
git-archimport.perl
git-bisect.sh
git-compat-util.h error_routine: use parent's stderr if exec fails 2011-07-31 18:27:07 -07:00
git-cvsexportcommit.perl
git-cvsimport.perl
git-cvsserver.perl
git-difftool--helper.sh
git-difftool.perl
git-filter-branch.sh
git-instaweb.sh
git-lost-found.sh
git-merge-octopus.sh
git-merge-one-file.sh
git-merge-resolve.sh
git-mergetool--lib.sh
git-mergetool.sh
git-parse-remote.sh
git-pull.sh
git-quiltimport.sh
git-rebase--am.sh
git-rebase--interactive.sh rebase: write a reflog entry when finishing 2011-05-27 15:52:03 -07:00
git-rebase--merge.sh
git-rebase.sh rebase: write a reflog entry when finishing 2011-05-27 15:52:03 -07:00
git-relink.perl
git-remote-testgit.py
git-repack.sh
git-request-pull.sh
git-send-email.perl
git-sh-i18n.sh
git-sh-setup.sh
git-stash.sh
git-submodule.sh Merge branch 'maint' 2011-05-30 00:09:55 -07:00
git-svn.perl git-svn: Correctly handle root commits in mergeinfo ranges 2011-06-28 03:26:11 +00:00
GIT-VERSION-GEN Git 1.7.6 2011-06-26 12:41:16 -07:00
git-web--browse.sh
git.c Merge branch 'jk/maint-config-alias-fix' into maint 2011-06-01 14:05:22 -07:00
git.spec.in
graph.c
graph.h
grep.c
grep.h
hash.c
hash.h
help.c
help.h
hex.c
http-backend.c
http-fetch.c
http-push.c
http-walker.c
http.c
http.h
ident.c Merge branch 'rg/no-gecos-in-pwent' 2011-05-26 10:32:19 -07:00
imap-send.c
INSTALL
levenshtein.c
levenshtein.h
LGPL-2.1
list-objects.c
list-objects.h
ll-merge.c
ll-merge.h
lockfile.c
log-tree.c Merge branch 'jk/format-patch-am' 2011-05-31 12:19:11 -07:00
log-tree.h
mailmap.c
mailmap.h
Makefile Merge branch 'mk/grep-pcre' 2011-05-30 00:00:07 -07:00
match-trees.c
merge-file.c
merge-file.h
merge-recursive.c Merge branch 'jc/rename-degrade-cc-to-c' into maint 2011-05-31 12:00:02 -07:00
merge-recursive.h
name-hash.c
notes-cache.c
notes-cache.h
notes-merge.c
notes-merge.h
notes.c
notes.h
object.c
object.h
pack-check.c
pack-refs.c
pack-refs.h
pack-revindex.c
pack-revindex.h
pack-write.c
pack.h
pager.c
parse-options.c
parse-options.h
patch-delta.c
patch-ids.c
patch-ids.h
path.c
pkt-line.c
pkt-line.h
preload-index.c
pretty.c Merge branch 'jk/format-patch-am' 2011-05-31 12:19:11 -07:00
progress.c
progress.h
quote.c
quote.h
reachable.c
reachable.h
read-cache.c
README
reflog-walk.c
reflog-walk.h
refs.c Fix typo: existant->existent 2011-06-16 10:33:50 -07:00
refs.h
RelNotes Start 1.7.5.4 draft release notes 2011-05-31 12:06:40 -07:00
remote-curl.c remote-curl: Add a format check to parsing of info/refs 2011-07-20 15:51:55 -07:00
remote.c
remote.h
replace_object.c
rerere.c Merge branch 'maint' 2011-05-30 00:09:55 -07:00
rerere.h
resolve-undo.c
resolve-undo.h
revision.c Merge branch 'jc/notes-batch-removal' 2011-05-29 23:51:26 -07:00
revision.h Merge branch 'jk/format-patch-am' 2011-05-31 12:19:11 -07:00
run-command.c notice error exit from pager 2011-08-01 16:21:55 -07:00
run-command.h
send-pack.h
server-info.c
setup.c Merge branch 'maint' 2011-05-30 00:09:55 -07:00
sh-i18n--envsubst.c Merge branch 'ab/i18n-scripts-basic' 2011-06-17 11:40:32 -07:00
sha1_file.c
sha1_name.c
sha1-array.c
sha1-array.h
sha1-lookup.c
sha1-lookup.h
shallow.c
shell.c
shortlog.h
show-index.c
sideband.c
sideband.h
sigchain.c
sigchain.h
strbuf.c
strbuf.h
string-list.c
string-list.h
submodule.c
submodule.h
symlinks.c
tag.c
tag.h
tar.h
test-chmtime.c
test-ctype.c
test-date.c
test-delta.c
test-dump-cache-tree.c
test-genrandom.c
test-index-version.c
test-line-buffer.c
test-match-trees.c
test-mktemp.c
test-obj-pool.c
test-parse-options.c
test-path-utils.c
test-run-command.c
test-sha1.c
test-sha1.sh
test-sigchain.c
test-string-pool.c
test-subprocess.c
test-svn-fe.c
test-treap.c
thread-utils.c
thread-utils.h
trace.c
transport-helper.c
transport.c Merge branch 'maint' 2011-05-30 00:09:55 -07:00
transport.h
tree-diff.c Merge branch 'jk/diff-not-so-quick' 2011-06-06 11:40:14 -07:00
tree-walk.c
tree-walk.h
tree.c
tree.h
unimplemented.sh
unpack-trees.c
unpack-trees.h
upload-pack.c
url.c
url.h
usage.c error_routine: use parent's stderr if exec fails 2011-07-31 18:27:07 -07:00
userdiff.c
userdiff.h
utf8.c
utf8.h
walker.c
walker.h
wrap-for-bin.sh
wrapper.c read_in_full: always report errors 2011-05-26 13:54:18 -07:00
write_or_die.c
ws.c
wt-status.c
wt-status.h
xdiff-interface.c
xdiff-interface.h
zlib.c

README 

////////////////////////////////////////////////////////////////

	GIT - the stupid content tracker

////////////////////////////////////////////////////////////////

"git" can mean anything, depending on your mood.

 - random three-letter combination that is pronounceable, and not
   actually used by any common UNIX command.  The fact that it is a
   mispronunciation of "get" may or may not be relevant.
 - stupid. contemptible and despicable. simple. Take your pick from the
   dictionary of slang.
 - "global information tracker": you're in a good mood, and it actually
   works for you. Angels sing, and a light suddenly fills the room.
 - "goddamn idiotic truckload of sh*t": when it breaks

Git is a fast, scalable, distributed revision control system with an
unusually rich command set that provides both high-level operations
and full access to internals.

Git is an Open Source project covered by the GNU General Public License.
It was originally written by Linus Torvalds with help of a group of
hackers around the net. It is currently maintained by Junio C Hamano.

Please read the file INSTALL for installation instructions.

See Documentation/gittutorial.txt to get started, then see
Documentation/everyday.txt for a useful minimum set of commands, and
Documentation/git-commandname.txt for documentation of each command.
If git has been correctly installed, then the tutorial can also be
read with "man gittutorial" or "git help tutorial", and the
documentation of each command with "man git-commandname" or "git help
commandname".

CVS users may also want to read Documentation/gitcvs-migration.txt
("man gitcvs-migration" or "git help cvs-migration" if git is
installed).

Many Git online resources are accessible from http://git-scm.com/
including full documentation and Git related tools.

The user discussion and development of Git take place on the Git
mailing list -- everyone is welcome to post bug reports, feature
requests, comments and patches to git@vger.kernel.org. To subscribe
to the list, send an email with just "subscribe git" in the body to
majordomo@vger.kernel.org. The mailing list archives are available at
http://marc.theaimsgroup.com/?l=git and other archival sites.

The messages titled "A note from the maintainer", "What's in
git.git (stable)" and "What's cooking in git.git (topics)" and
the discussion following them on the mailing list give a good
reference for project status, development direction and
remaining tasks.