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Jeff King 3dbfe2b8ae diff-highlight: avoid highlighting combined diffs
The algorithm in diff-highlight only understands how to look
at two sides of a diff; it cannot correctly handle combined
diffs with multiple preimages. Often highlighting does not
trigger at all for these diffs because the line counts do
not match up.  E.g., if we see:

  - ours
   -theirs
  ++resolved

we would not bother highlighting; it naively looks like a
single line went away, and then a separate hunk added
another single line.

But of course there are exceptions. E.g., if the other side
deleted the line, we might see:

  - ours
  ++resolved

which looks like we dropped " ours" and added "+resolved".
This is only a small highlighting glitch (we highlight the
space and the "+" along with the content), but it's also the
tip of the iceberg. Even if we learned to find the true
content here (by noticing we are in a 3-way combined diff
and marking _two_ characters from the front of the line as
uninteresting), there are other more complicated cases where
we really do need to handle a 3-way hunk.

Let's just punt for now; we can recognize combined diffs by
the presence of extra "@" symbols in the hunk header, and
treat them as non-diff content.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-08-31 09:59:53 -07:00
block-sha1
builtin Merge branch 'js/no-html-bypass-on-windows' 2016-08-25 13:55:06 -07:00
ci
compat Merge branch 'bw/mingw-avoid-inheriting-fd-to-lockfile' 2016-08-25 13:55:07 -07:00
contrib diff-highlight: avoid highlighting combined diffs 2016-08-31 09:59:53 -07:00
Documentation Git 2.10-rc2 2016-08-26 13:59:20 -07:00
ewah
git-gui
gitk-git
gitweb gitweb: escape link body in format_ref_marker 2016-08-01 12:55:40 -07:00
mergetools
perl git-svn: warn instead of dying when commit data is missing 2016-07-09 22:53:54 +00:00
po Merge branch 'va/i18n-even-more' 2016-07-13 11:24:10 -07:00
ppc
refs Merge branch 'mh/ref-iterators' 2016-07-25 14:13:33 -07:00
t Merge branch 'bw/mingw-avoid-inheriting-fd-to-lockfile' 2016-08-25 13:55:07 -07:00
templates push options: {pre,post}-receive hook learns about push options 2016-07-14 15:50:17 -07:00
vcs-svn
xdiff Merge branch 'js/ignore-space-at-eol' into maint 2016-08-08 14:21:35 -07:00
.gitattributes .gitattributes: set file type for C files 2016-07-07 14:11:15 -07:00
.gitignore
.mailmap .mailmap: use Christian Couder's Tuxfamily address 2016-08-08 15:17:24 -07:00
.travis.yml Merge branch 'ls/travis-enable-httpd-tests' into maint 2016-08-10 11:55:23 -07:00
abspath.c
aclocal.m4
advice.c i18n: advice: internationalize message for conflicts 2016-06-17 15:45:48 -07:00
advice.h
alias.c
alloc.c
archive-tar.c Merge branch 'jk/big-and-future-archive-tar' 2016-08-12 09:47:37 -07:00
archive-zip.c
archive.c i18n: archive: mark errors for translation 2016-08-09 12:44:59 -07:00
archive.h
argv-array.c
argv-array.h
attr.c
attr.h
base85.c
bisect.c Merge branch 'jk/printf-format' 2016-07-19 13:22:22 -07:00
bisect.h
blob.c
blob.h
branch.c
branch.h
builtin.h
bulk-checkin.c
bulk-checkin.h
bundle.c
bundle.h
cache-tree.c cache-tree: do not generate empty trees as a result of all i-t-a subentries 2016-07-18 13:45:33 -07:00
cache-tree.h
cache.h Merge branch 'jk/trace-fixup' 2016-08-12 09:47:36 -07:00
check-builtins.sh
check-racy.c
check_bindir
color.c Merge branch 'jk/ansi-color' 2016-07-11 10:31:05 -07:00
color.h Merge branch 'js/color-on-windows-comment' into maint 2016-07-28 11:25:55 -07:00
column.c
column.h
combine-diff.c Merge branch 'bc/cocci' 2016-07-19 13:22:16 -07:00
command-list.txt
commit-slab.h Merge branch 'vs/typofix' 2016-08-12 09:47:37 -07:00
commit.c Merge branch 'rs/pull-signed-tag' 2016-08-19 15:34:14 -07:00
commit.h Merge branch 'rs/pull-signed-tag' 2016-08-19 15:34:14 -07:00
common-main.c mingw: declare main()'s argv as const 2016-07-06 08:11:47 -07:00
config.c i18n: simplify numeric error reporting 2016-08-24 08:47:20 -07:00
config.mak.in
config.mak.uname Merge branch 'ew/build-time-pager-tweaks' 2016-08-08 14:48:44 -07:00
configure.ac Merge branch 'ew/autoconf-pthread' into maint 2016-08-10 11:55:21 -07:00
connect.c connect: read $GIT_SSH_COMMAND from config file 2016-07-06 14:04:09 -07:00
connect.h
connected.c check_connected: add progress flag 2016-07-20 12:11:09 -07:00
connected.h check_connected: add progress flag 2016-07-20 12:11:09 -07:00
convert.c convert: Correct NNO tests and missing LF will be replaced by CRLF 2016-08-14 13:45:52 -07:00
convert.h convert: unify the "auto" handling of CRLF 2016-07-06 11:53:51 -07:00
copy.c
COPYING
credential-cache--daemon.c Merge branch 'jk/common-main-2.8' into jk/common-main 2016-07-06 10:02:57 -07:00
credential-cache.c add an extra level of indirection to main() 2016-07-01 15:09:10 -07:00
credential-store.c add an extra level of indirection to main() 2016-07-01 15:09:10 -07:00
credential.c
credential.h
csum-file.c
csum-file.h
ctype.c
daemon.c Merge branch 'ew/daemon-socket-keepalive' 2016-07-28 10:34:43 -07:00
date.c date: add "unix" format 2016-07-27 14:15:51 -07:00
decorate.c
decorate.h
delta.h
diff-delta.c
diff-lib.c
diff-no-index.c
diff.c Merge branch 'kw/patch-ids-optim' 2016-08-12 09:47:39 -07:00
diff.h patch-ids: add flag to create the diff patch id using header only data 2016-07-29 14:10:01 -07:00
diffcore-break.c diff: rename struct diff_filespec's sha1_valid member 2016-06-28 11:39:02 -07:00
diffcore-delta.c
diffcore-order.c
diffcore-pickaxe.c diffcore-pickaxe: support case insensitive match on non-ascii 2016-07-01 12:44:57 -07:00
diffcore-rename.c pass constants as first argument to st_mult() 2016-08-01 14:01:03 -07:00
diffcore.h diff: rename struct diff_filespec's sha1_valid member 2016-06-28 11:39:02 -07:00
dir-iterator.c dir_iterator: new API for iterating over a directory tree 2016-06-20 11:38:21 -07:00
dir-iterator.h dir_iterator: new API for iterating over a directory tree 2016-06-20 11:38:21 -07:00
dir.c Merge branch 'rs/use-strbuf-addbuf' into maint 2016-08-08 14:21:42 -07:00
dir.h Merge branch 'mh/split-under-lock' 2016-07-25 14:13:32 -07:00
editor.c
entry.c
environment.c Merge branch 'js/windows-dotgit' into maint 2016-05-26 13:17:23 -07:00
exec_cmd.c
exec_cmd.h
fast-import.c Merge branch 'jk/common-main' 2016-07-19 13:22:19 -07:00
fetch-pack.c fetch-pack: grow stateless RPC windows exponentially 2016-07-19 13:27:22 -07:00
fetch-pack.h
fmt-merge-msg.h
fsck.c fsck: optionally show more helpful info for broken links 2016-07-18 15:15:59 -07:00
fsck.h fsck: give the error function a chance to see the fsck_options 2016-07-18 11:35:00 -07:00
generate-cmdlist.sh
gettext.c gettext: add is_utf8_locale() 2016-07-01 12:44:57 -07:00
gettext.h gettext: add is_utf8_locale() 2016-07-01 12:44:57 -07:00
git-add--interactive.perl add--interactive: respect diff.compactionHeuristic 2016-06-16 11:38:58 -07:00
git-archimport.perl
git-bisect.sh i18n: unmark die messages for translation 2016-06-17 15:46:10 -07:00
git-compat-util.h Merge branch 'bw/mingw-avoid-inheriting-fd-to-lockfile' 2016-08-25 13:55:07 -07:00
git-cvsexportcommit.perl
git-cvsimport.perl
git-cvsserver.perl
git-difftool--helper.sh difftool: always honor fatal error exit codes 2016-08-15 15:24:05 -07:00
git-difftool.perl difftool: use Git::* functions instead of passing around state 2016-07-28 14:01:55 -07:00
git-filter-branch.sh
git-instaweb.sh
git-merge-octopus.sh i18n: git-sh-setup.sh: mark strings for translation 2016-06-17 15:45:48 -07:00
git-merge-one-file.sh
git-merge-resolve.sh
git-mergetool--lib.sh
git-mergetool.sh
git-p4.py Spelling fixes 2016-08-11 14:35:42 -07:00
git-parse-remote.sh
git-quiltimport.sh
git-rebase--am.sh rebase: update comment about FreeBSD /bin/sh 2016-06-17 11:04:38 -07:00
git-rebase--interactive.sh i18n: fix git rebase interactive commit messages 2016-08-24 08:43:27 -07:00
git-rebase--merge.sh Merge branch 'em/newer-freebsd-shells-are-fine-with-returns' into maint 2016-07-06 13:06:41 -07:00
git-rebase.sh i18n: git-sh-setup.sh: mark strings for translation 2016-06-17 15:45:48 -07:00
git-relink.perl
git-remote-testgit.sh
git-request-pull.sh
git-send-email.perl Merge branch 'jc/send-email-skip-backup' 2016-07-11 10:31:04 -07:00
git-sh-i18n.sh i18n: rebase-interactive: mark here-doc strings for translation 2016-06-17 15:45:48 -07:00
git-sh-setup.sh Merge branch 'ew/build-time-pager-tweaks' 2016-08-08 14:48:44 -07:00
git-stash.sh i18n: git-stash: mark messages for translation 2016-08-10 10:50:18 -07:00
git-submodule.sh Merge branch 'sb/submodule-update-dot-branch' 2016-08-10 12:33:20 -07:00
git-svn.perl git-svn: allow --version to work anywhere 2016-07-22 20:38:11 +00:00
GIT-VERSION-GEN Git 2.10-rc2 2016-08-26 13:59:20 -07:00
git-web--browse.sh
git.c common-main: call git_setup_gettext() 2016-07-01 15:09:10 -07:00
git.rc
gpg-interface.c Merge branch 'lt/gpg-show-long-key-in-signature-verification-maint' into lt/gpg-show-long-key-in-signature-verification 2016-08-16 15:04:13 -07:00
gpg-interface.h
graph.c Merge branch 'js/log-to-diffopt-file' 2016-07-19 13:22:15 -07:00
graph.h pretty: pass graph width to pretty formatting for use in '%>|(N)' 2016-06-16 11:43:36 -07:00
grep.c Merge branch 'js/am-3-merge-recursive-direct' 2016-08-10 12:33:20 -07:00
grep.h Merge branch 'jc/grep-commandline-vs-configuration' into maint 2016-08-10 11:55:29 -07:00
hashmap.c
hashmap.h
help.c t0006: skip "far in the future" test when unsigned long is not long enough 2016-07-15 09:05:53 -07:00
help.h
hex.c hex: add oid_to_hex_r() 2016-06-28 11:39:02 -07:00
http-backend.c Merge branch 'ew/http-backend-batch-headers' 2016-08-12 09:47:38 -07:00
http-fetch.c common-main: call git_setup_gettext() 2016-07-01 15:09:10 -07:00
http-push.c Merge branch 'rs/use-strbuf-addstr' 2016-08-08 14:48:41 -07:00
http-walker.c http-walker: reduce O(n) ops with doubly-linked list 2016-07-12 15:17:42 -07:00
http.c Merge branch 'rs/use-strbuf-addstr' 2016-08-08 14:48:41 -07:00
http.h Merge branch 'ep/http-curl-trace' 2016-07-06 13:38:06 -07:00
ident.c Merge branch 'jk/reset-ident-time-per-commit' into maint 2016-08-12 09:16:56 -07:00
imap-send.c die("bug"): report bugs consistently 2016-07-26 11:13:44 -07:00
INSTALL
iterator.h refs: introduce an iterator interface 2016-06-20 11:38:20 -07:00
khash.h
kwset.c
kwset.h
levenshtein.c
levenshtein.h
LGPL-2.1
line-log.c Merge branch 'bc/cocci' 2016-07-19 13:22:16 -07:00
line-log.h
line-range.c
line-range.h
list-objects.c
list-objects.h
list.h list: avoid incompatibility with *BSD sys/queue.h 2016-07-18 11:06:51 -07:00
ll-merge.c
ll-merge.h
lockfile.c
lockfile.h mingw: ensure temporary file handles are not inherited by child processes 2016-08-23 09:09:55 -07:00
log-tree.c Merge branch 'nd/log-decorate-color-head-arrow' 2016-08-08 14:48:42 -07:00
log-tree.h
mailinfo.c Merge branch 'rs/mailinfo-lib' 2016-08-17 14:07:47 -07:00
mailinfo.h
mailmap.c
mailmap.h
Makefile Merge branch 'ew/build-time-pager-tweaks' 2016-08-08 14:48:44 -07:00
match-trees.c
merge-blobs.c
merge-blobs.h
merge-recursive.c Merge branch 'rs/pull-signed-tag' 2016-08-19 15:34:14 -07:00
merge-recursive.h merge-recursive: offer an option to retain the output in 'obuf' 2016-08-01 11:45:30 -07:00
merge.c
mergesort.c
mergesort.h
mru.c add generic most-recently-used list 2016-07-29 11:05:07 -07:00
mru.h add generic most-recently-used list 2016-07-29 11:05:07 -07:00
name-hash.c
notes-cache.c
notes-cache.h
notes-merge.c Merge branch 'rs/notes-merge-no-toctou' 2016-07-28 10:34:41 -07:00
notes-merge.h
notes-utils.c
notes-utils.h
notes.c use string_list initializer consistently 2016-06-13 10:37:51 -07:00
notes.h
object.c
object.h
pack-bitmap-write.c
pack-bitmap.c
pack-bitmap.h
pack-check.c fsck: use streaming interface for large blobs in pack 2016-07-13 09:15:29 -07:00
pack-objects.c
pack-objects.h
pack-revindex.c
pack-revindex.h
pack-write.c sha1_file: drop free_pack_by_name 2016-07-29 11:05:06 -07:00
pack.h fsck: use streaming interface for large blobs in pack 2016-07-13 09:15:29 -07:00
pager.c pager: move pager-specific setup into the build 2016-08-04 13:51:02 -07:00
parse-options-cb.c Merge branch 'jk/parse-options-concat' 2016-08-03 15:10:25 -07:00
parse-options.c
parse-options.h parse_options: allocate a new array when concatenating 2016-07-06 10:11:08 -07:00
patch-delta.c
patch-ids.c rebase: avoid computing unnecessary patch IDs 2016-08-11 14:39:16 -07:00
patch-ids.h rebase: avoid computing unnecessary patch IDs 2016-08-11 14:39:16 -07:00
path.c Merge branch 'ab/hooks' 2016-08-19 15:34:16 -07:00
pathspec.c pathspec: rename free_pathspec() to clear_pathspec() 2016-06-02 14:09:22 -07:00
pathspec.h pathspec: rename free_pathspec() to clear_pathspec() 2016-06-02 14:09:22 -07:00
pkt-line.c
pkt-line.h
preload-index.c
pretty.c Merge branch 'rs/use-strbuf-add-unique-abbrev' 2016-08-12 09:47:37 -07:00
prio-queue.c
prio-queue.h
progress.c
progress.h
prompt.c
prompt.h
quote.c Merge branch 'nd/icase' into maint 2016-07-28 11:26:03 -07:00
quote.h Merge branch 'nd/icase' into maint 2016-07-28 11:26:03 -07:00
reachable.c
reachable.h
read-cache.c Merge branch 'jc/renormalize-merge-kill-safer-crlf' 2016-07-25 14:13:39 -07:00
README.md README.md: format CLI commands with code syntax 2016-05-31 08:54:24 -07:00
ref-filter.c
ref-filter.h
reflog-walk.c reflog: continue walking the reflog past root commits 2016-06-06 15:06:44 -07:00
reflog-walk.h
refs.c pass constants as first argument to st_mult() 2016-08-01 14:01:03 -07:00
refs.h Merge branch 'mh/ref-iterators' 2016-07-25 14:13:33 -07:00
RelNotes Some fixes for 2.9.3 2016-07-28 11:28:32 -07:00
remote-curl.c Merge branch 'jk/common-main-2.8' into jk/common-main 2016-07-06 10:02:57 -07:00
remote-testsvn.c common-main: call git_extract_argv0_path() 2016-07-01 15:09:10 -07:00
remote.c Merge branch 'jk/push-force-with-lease-creation' 2016-08-10 12:33:18 -07:00
remote.h Merge branch 'jk/push-force-with-lease-creation' 2016-08-10 12:33:18 -07:00
replace_object.c
rerere.c Merge branch 'jc/rerere-multi' 2016-05-23 14:54:38 -07:00
rerere.h
resolve-undo.c
resolve-undo.h
revision.c Merge branch 'kw/patch-ids-optim' 2016-08-12 09:47:39 -07:00
revision.h
run-command.c Merge branch 'ab/hooks' 2016-08-19 15:34:16 -07:00
run-command.h run-command: add pipe_command helper 2016-06-17 17:03:56 -07:00
send-pack.c Merge branch 'rs/use-strbuf-addstr' into maint 2016-08-10 11:55:34 -07:00
send-pack.h push: accept push options 2016-07-14 15:50:41 -07:00
sequencer.c i18n: fix typos for translation 2016-08-24 08:41:22 -07:00
sequencer.h
server-info.c
setup.c i18n: setup: mark error messages for translation 2016-08-09 12:44:59 -07:00
sh-i18n--envsubst.c add an extra level of indirection to main() 2016-07-01 15:09:10 -07:00
sha1-array.c
sha1-array.h
sha1-lookup.c
sha1-lookup.h
sha1_file.c Merge branch 'vs/typofix' 2016-08-12 09:47:37 -07:00
sha1_name.c
shallow.c pass constants as first argument to st_mult() 2016-08-01 14:01:03 -07:00
shell.c common-main: call git_setup_gettext() 2016-07-01 15:09:10 -07:00
shortlog.h shortlog: support outputting to streams other than stdout 2016-06-24 14:25:49 -07:00
show-index.c common-main: call git_setup_gettext() 2016-07-01 15:09:10 -07:00
sideband.c Merge branch 'lf/recv-sideband-cleanup' into maint 2016-08-08 14:21:41 -07:00
sideband.h sideband.c: make send_sideband() return void 2016-06-16 11:40:19 -07:00
sigchain.c
sigchain.h
split-index.c
split-index.h
strbuf.c Merge branch 'rs/use-strbuf-addbuf' into maint 2016-08-08 14:21:42 -07:00
strbuf.h Merge branch 'rs/use-strbuf-addbuf' into maint 2016-08-08 14:21:42 -07:00
streaming.c
streaming.h
string-list.c
string-list.h
submodule-config.c Merge branch 'sb/submodule-update-dot-branch' 2016-08-10 12:33:20 -07:00
submodule-config.h submodule-config: keep configured branch around 2016-08-01 14:42:07 -07:00
submodule.c Merge branch 'bc/cocci' 2016-07-19 13:22:16 -07:00
submodule.h
symlinks.c
tag.c
tag.h
tar.h
tempfile.c mingw: ensure temporary file handles are not inherited by child processes 2016-08-23 09:09:55 -07:00
tempfile.h mingw: ensure temporary file handles are not inherited by child processes 2016-08-23 09:09:55 -07:00
thread-utils.c
thread-utils.h
trace.c trace: do not fall back to stderr 2016-08-05 09:28:17 -07:00
trace.h
trailer.c die("bug"): report bugs consistently 2016-07-26 11:13:44 -07:00
trailer.h
transport-helper.c Spelling fixes 2016-08-11 14:35:42 -07:00
transport.c Merge branch 'rs/use-strbuf-add-unique-abbrev' 2016-08-12 09:47:37 -07:00
transport.h push: accept push options 2016-07-14 15:50:41 -07:00
tree-diff.c Merge branch 'jk/avoid-unbounded-alloca' into maint 2016-07-06 13:06:39 -07:00
tree-walk.c
tree-walk.h
tree.c
tree.h
unicode_width.h
unimplemented.sh
unix-socket.c
unix-socket.h
unpack-trees.c unpack-trees: fix English grammar in do-this-before-that messages 2016-06-27 08:29:36 -07:00
unpack-trees.h
update_unicode.sh
upload-pack.c Spelling fixes 2016-08-11 14:35:42 -07:00
url.c
url.h
urlmatch.c
urlmatch.h
usage.c
userdiff.c userdiff: add built-in pattern for CSS 2016-06-03 14:45:56 -07:00
userdiff.h
utf8.c
utf8.h
varint.c
varint.h
version.c
version.h
versioncmp.c
walker.c walker: let walker_say take arbitrary formats 2016-07-08 10:11:23 -07:00
walker.h walker: let walker_say take arbitrary formats 2016-07-08 10:11:23 -07:00
wildmatch.c
wildmatch.h
worktree.c Merge branch 'nd/worktree-lock' 2016-07-28 10:34:42 -07:00
worktree.h worktree.c: add is_worktree_locked() 2016-06-13 11:53:14 -07:00
wrap-for-bin.sh
wrapper.c Merge branch 'sb/submodule-parallel-fetch' into maint 2016-07-28 11:26:02 -07:00
write_or_die.c write_or_die: drop write_or_whine_pipe() 2016-08-05 09:28:17 -07:00
ws.c
wt-status.c Merge branch 'js/am-3-merge-recursive-direct' 2016-08-10 12:33:20 -07:00
wt-status.h
xdiff-interface.c xdiff: don't trim common tail with -W 2016-05-31 13:08:56 -07:00
xdiff-interface.h
zlib.c

Git - fast, scalable, distributed revision control system

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 version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.

Please read the file INSTALL for installation instructions.

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

See Documentation/gittutorial.txt to get started, then see Documentation/giteveryday.txt for a useful minimum set of commands, and Documentation/git-.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).

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 (read Documentation/SubmittingPatches for instructions on patch submission). 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://news.gmane.org/gmane.comp.version-control.git/, http://marc.info/?l=git and other archival sites.

The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.

The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (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