When working with paths in strbufs, we frequently want to
ensure that a directory contains a trailing slash before
appending to it. We can shorten this code (and make the
intent more obvious) by calling strbuf_complete.
Most of these cases are trivially identical conversions, but
there are two things to note:
- in a few cases we did not check that the strbuf is
non-empty (which would lead to an out-of-bounds memory
access). These were generally not triggerable in
practice, either from earlier assertions, or typically
because we would have just fed the strbuf to opendir(),
which would choke on an empty path.
- in a few cases we indexed the buffer with "original_len"
or similar, rather than the current sb->len, and it is
not immediately obvious from the diff that they are the
same. In all of these cases, I manually verified that
the strbuf does not change between the assignment and
the strbuf_complete call.
This does not convert cases which look like:
if (sb->len && !is_dir_sep(sb->buf[sb->len - 1]))
strbuf_addch(sb, '/');
as those are obviously semantically different. Some of these
cases arguably should be doing that, but that is out of
scope for this change, which aims purely for cleanup with no
behavior change (and at least it will make such sites easier
to find and examine in the future, as we can grep for
strbuf_complete).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We defaulted to ignoring merge diffs because long long ago, in a
galaxy far away, we didn't have a great way to show the diffs. The
whole "--cc" option goes back to January '06 and commit d8f4790e6f
("diff-tree --cc: denser combined diff output for a merge commit").
And before that option - so for about 8 months - we had no good way
to show the diffs of merges in a good dense way. So the whole
"don't show diffs for merges by default" actually made a lot of
sense originally, because our merge diffs were not very useful.
And this was carried forward to this day. "git log --cc" still
ignores merge commits, and you need to say "git log -m --cc" to view
a sensible rendition of merge and non-merge commits, even with the
previous change to make "--cc" imply "-p".
Teach "git log" that "--cc" means the user wants to see interesting
changes in merge commits by turning "-m" on.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The "--cc" option to "git log" is clearly a request to show some
sort of combined diff (be it --patch or --raw), but traditionally
we required the command line to explicitly ask for "git log -p --cc".
Teach the command line parser to treat a lone "--cc" as if the user
specified "-p --cc". Formats that do ask for other forms of diff
output, e.g. "log --raw --cc", are not overriden.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The revision walking API allows the callers to tweak its
configuration at the last minute, immediately after all the revision
and pathspec parameters are parsed from the command line but before
the default actions are decided based on them, by defining a "tweak"
callback function when calling setup_revisions(). Traditionally,
this facility was used by "git show" to turn on the patch output
"-p" by default when no diff output option (e.g. "--raw" or "-s" to
squelch the output altogether) is given on the command line, and
further give dense combined diffs "--cc" for merge commits when no
option to countermand it (e.g. "-m" to show pairwise patches).
Recently, "git log" started using the same facility, but we named
the callback function "default_follow_tweak()", as if the only kind
of tweaking we would want for "git log" will forever be limited to
turning "--follow" on by default when told by a configuration
variable. That was myopic.
Rename it to more generic name "log_setup_revisions_tweak()", and
match the one used by show "show_setup_revisions_tweak()".
Signed-off-by: Junio C Hamano <gitster@pobox.com>
People who work on projects with mostly linear history with frequent
whole file renames may want to always use "git log --follow" when
inspecting the life of the content that live in a single path.
Teach the command to behave as if "--follow" was given from the
command line when log.follow configuration variable is set *and*
there is one (and only one) path on the command line.
Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In preparation for adding date modes that may carry extra
information beyond the mode itself, this patch converts the
date_mode enum into a struct.
Most of the conversion is fairly straightforward; we pass
the struct as a pointer and dereference the type field where
necessary. Locations that declare a date_mode can use a "{}"
constructor. However, the tricky case is where we use the
enum labels as constants, like:
show_date(t, tz, DATE_NORMAL);
Ideally we could say:
show_date(t, tz, &{ DATE_NORMAL });
but of course C does not allow that. Likewise, we cannot
cast the constant to a struct, because we need to pass an
actual address. Our options are basically:
1. Manually add a "struct date_mode d = { DATE_NORMAL }"
definition to each caller, and pass "&d". This makes
the callers uglier, because they sometimes do not even
have their own scope (e.g., they are inside a switch
statement).
2. Provide a pre-made global "date_normal" struct that can
be passed by address. We'd also need "date_rfc2822",
"date_iso8601", and so forth. But at least the ugliness
is defined in one place.
3. Provide a wrapper that generates the correct struct on
the fly. The big downside is that we end up pointing to
a single global, which makes our wrapper non-reentrant.
But show_date is already not reentrant, so it does not
matter.
This patch implements 3, along with a minor macro to keep
the size of the callers sane.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Some functions from the refs module were still declared in cache.h.
Move them to refs.h.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"git format-patch --ignore-if-in-upstream A..B", when either A or B
is a tag, failed miserably.
This is because the code passes the tips it used for traversal to
clear_commit_marks(), after running a temporary revision traversal
to enumerate the commits on both branches to find if they have
commits that make equivalent changes. The revision traversal
machinery knows how to enumerate commits reachable starting from a
tag, but clear_commit_marks() wants to take nothing but a commit.
In the longer term, it might be a more correct fix to teach
clear_commit_marks() to do the same "committish to commit"
dereferencing that is done in the revision traversal machinery,
but for now this fix should suffice.
Reported-by: Bruce Korb <bruce.korb@gmail.com>
Helped-by: Christian Couder <christian.couder@gmail.com>
Helped-by: brian m. carlson <sandals@crustytoothpaste.net>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When the previous commit introduced the branch_get_upstream
helper, there was one call-site that could not be converted:
the one in sha1_name.c, which gives detailed error messages
for each possible failure.
Let's teach the helper to optionally report these specific
errors. This lets us convert another callsite, and means we
can use the helper in other locations that want to give the
same error messages.
The logic and error messages come straight from sha1_name.c,
with the exception that we start each error with a lowercase
letter, as is our usual style (note that a few tests need
updated as a result).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
All of the information needed to find the @{upstream} of a
branch is included in the branch struct, but callers have to
navigate a series of possible-NULL values to get there.
Let's wrap that logic up in an easy-to-read helper.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Earlier, 9c9b4f2f (standardize usage info string format, 2015-01-13)
tried to make usage-string in line with the documentation by
- Placing angle brackets around fill-in-the-blank parameters
- Putting dashes in multiword parameter names
- Adding spaces to [-f|--foobar] to make [-f | --foobar]
- Replacing <foobar>* with [<foobar>...]
but it missed a few places.
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This patch puts the usage info strings that were not already in docopt-
like format into docopt-like format, which will be a litle easier for
end users and a lot easier for translators. Changes include:
- Placing angle brackets around fill-in-the-blank parameters
- Putting dashes in multiword parameter names
- Adding spaces to [-f|--foobar] to make [-f | --foobar]
- Replacing <foobar>* with [<foobar>...]
Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Reviewed-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff.submodule when set to log produces output which git-am cannot
handle. Ignore this setting when generating patch output.
Signed-off-by: Doug Kelly <dougk.ff7@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The parse_options API expects an array of alternative usage lines
to which it automatically ads the language-appropriate "or" when
displaying. Each of these options is marked for translation with N_
and then later translated when gettext is called on each element
of the array.
Since the N_ macro just expands to its argument, if two N_-marked
strings appear next to each other without being separated by anything
else such as a comma, the preprocessor will join them into one string.
In that case two separate strings get marked for translation, but at
runtime they have been joined into a single string passed to gettext
which then fails to get translated because the combined string was
never marked for translation.
Fix this by properly separating the two N_ marked strings with
a comma and removing the embedded "\n" and " or:" that are
properly supplied by the parse_options API.
Signed-off-by: Kyle J. McKay <mackyle@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This allows the callback to use 'base' as a temporary buffer to
quickly assemble full path "without" extra allocation. The callback
has to restore it afterwards of course.
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
resolve_ref_unsafe takes a boolean argument for reading (a nonexistent ref
resolves successfully for writing but not for reading). Change this to be
a flags field instead, and pass the new constant RESOLVE_REF_READING when
we want this behaviour.
While at it, swap two of the arguments in the function to put output
arguments at the end. As a nice side effect, this ensures that we can
catch callers that were unaware of the new API so they can be audited.
Give the wrapper functions resolve_refdup and read_ref_full the same
treatment for consistency.
Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Many config-parsing helpers, like parse_branch_color_slot,
take the name of a config variable and an offset to the
"slot" name (e.g., "color.branch.plain" is passed along with
"13" to effectively pass "plain"). This is leftover from the
time that these functions would die() on error, and would
want the full variable name for error reporting.
These days they do not use the full variable name at all.
Passing a single pointer to the slot name is more natural,
and lets us more easily adjust the callers to use skip_prefix
to avoid manually writing offset numbers.
This is effectively a continuation of 9e1a5eb, which did the
same for parse_diff_color_slot. This patch covers all of the
remaining similar constructs.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Continue where ae021d87 (use skip_prefix to avoid magic numbers) left off
and use skip_prefix() in more places for determining the lengths of prefix
strings to avoid using dependent constants and other indirect methods.
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It's a common idiom to match a prefix and then skip past it
with strlen, like:
if (starts_with(foo, "bar"))
foo += strlen("bar");
This avoids magic numbers, but means we have to repeat the
string (and there is no compiler check that we didn't make a
typo in one of the strings).
We can use skip_prefix to handle this case without repeating
ourselves.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Most callsites which use the commit buffer try to use the
cached version attached to the commit, rather than
re-reading from disk. Unfortunately, that interface provides
only a pointer to the NUL-terminated buffer, with no
indication of the original length.
For the most part, this doesn't matter. People do not put
NULs in their commit messages, and the log code is happy to
treat it all as a NUL-terminated string. However, some code
paths do care. For example, when checking signatures, we
want to be very careful that we verify all the bytes to
avoid malicious trickery.
This patch just adds an optional "size" out-pointer to
get_commit_buffer and friends. The existing callers all pass
NULL (there did not seem to be any obvious sites where we
could avoid an immediate strlen() call, though perhaps with
some further refactoring we could).
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Each of these sites assumes that commit->buffer is valid.
Since they would segfault if this was not the case, they are
likely to be correct in practice. However, we can
future-proof them by using get_commit_buffer.
And as a side effect, we abstract away the final bare uses
of commit->buffer.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This converts two lines into one at each caller. But more
importantly, it abstracts the concept of freeing the buffer,
which will make it easier to change later.
Note that we also need to provide a "detach" mechanism for a
tricky case in index-pack. We are passed a buffer for the
object generated by processing the incoming pack. If we are
not using --strict, we just calculate the sha1 on that
buffer and return, leaving the caller to free it. But if we
are using --strict, we actually attach that buffer to an
object, pass the object to the fsck functions, and then
detach the buffer from the object again (so that the caller
can free it as usual). In this case, we don't want to free
the buffer ourselves, but just make sure it is no longer
associated with the commit.
Note that we are making the assumption here that the
attach/detach process does not impact the buffer at all
(e.g., it is never reallocated or modified). That holds true
now, and we have no plans to change that. However, as we
abstract the commit_buffer code, this dependency becomes
less obvious. So when we detach, let's also make sure that
we get back the same buffer that we gave to the
commit_buffer code.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This works kind of like "--color=auto" - add decorations for interactive
use, but do not change defaults when scripting or when piping the output
to anything but a terminal.
You can use either
[log]
decorate=auto
in the git config files, or the "--decorate=auto" command line option to
choose this behavior.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add an option to format-patch for reading a signature from a file.
$ git format-patch -1 --signature-file=$HOME/.signature
The config variable `format.signaturefile` can also be used to make
this the default.
$ git config format.signaturefile $HOME/.signature
$ git format-patch -1
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When we print an email signature, we print the divider
"-- \n", then the signature string, then two newlines.
Usually the signature is a one-liner (and the default is just the
git version), so the extra newline makes sense. But one could
easily specify a multi-line signature, like this:
git format-patch --signature='this is my long signature
it has multiple lines
' ...
and it may end with its own newline, in which case we do not have
to add yet another one.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Jeremiah Mahler <jmmahler@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Because of the way "--follow" is implemented, we must have
exactly one pathspec. "git log" enforces this restriction,
but other users of the revision traversal code do not. For
example, "git format-patch --follow" will segfault during
try_to_follow_renames, as we have no pathspecs at all.
We can push this check down into diff_setup_done, which is
probably a better place anyway. It is the diff code that
introduces this restriction, so other parts of the code
should not need to care themselves.
Reported-by: "Michael S. Tsirkin" <mst@redhat.com>
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Leaving only the function definitions and declarations so that any
new topic in flight can still make use of the old functions, replace
existing uses of the prefixcmp() and suffixcmp() with new API
functions.
The change can be recreated by mechanically applying this:
$ git grep -l -e prefixcmp -e suffixcmp -- \*.c |
grep -v strbuf\\.c |
xargs perl -pi -e '
s|!prefixcmp\(|starts_with\(|g;
s|prefixcmp\(|!starts_with\(|g;
s|!suffixcmp\(|ends_with\(|g;
s|suffixcmp\(|!ends_with\(|g;
'
on the result of preparatory changes in this series.
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This task emerged from b04ba2bb (parse-options: deprecate OPT_BOOLEAN,
2011-09-27). All occurrences of the respective variables have
been reviewed and none of them relied on the counting up mechanism,
but all of them were using the variable as a true boolean.
This patch does not change semantics of any command intentionally.
Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This patch allows users to use the short form -q on
log and format-patch, which was non possible before.
Also the documentation of format-patch mentions -q now.
The documentation of log doesn't even talk about --quiet, so I'll leave
that for more experienced git contributors. ;)
It doesn't seem to change the default behavior, but in combination
with --stat for example it suppresses the actual stats.
however the only relevant code in log is
if (quiet)
rev->diffopt.output_format |= DIFF_FORMAT_NO_OUTPUT;
Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
As of b04ba2bb4 OPTION_BOOLEAN was deprecated.
This commit removes all occurrences of OPTION_BOOLEAN.
In b04ba2bb4 Junio suggested to replace it with either
OPTION_SET_INT or OPTION_COUNTUP instead. However a pattern, which
occurred often with the OPTION_BOOLEAN was a hidden boolean parameter.
So I defined OPT_HIDDEN_BOOL as an additional possible parse option
in parse-options.h to make life easy.
The OPT_HIDDEN_BOOL was used in checkout, clone, commit, show-ref.
The only exception, where there was need to fiddle with OPTION_SET_INT
was log and notes. However in these two files there is also a pattern,
so we could think of introducing OPT_NONEG_BOOL.
Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
While at there, move free_pathspec() to pathspec.c
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Format-patch generates emails with the "From" address set to the
author of each patch. If you are going to send the emails, however,
you would want to replace the author identity with yours (if they
are not the same), and bump the author identity to an in-body
header.
Normally this is handled by git-send-email, which does the
transformation before sending out the emails. However, some
workflows may not use send-email (e.g., imap-send, or a custom
script which feeds the mbox to a non-git MUA). They could each
implement this feature themselves, but getting it right is
non-trivial (one must canonicalize the identities by reversing any
RFC2047 encoding or RFC822 quoting of the headers, which has caused
many bugs in send-email over the years).
This patch takes a different approach: it teaches format-patch a
"--from" option which handles the ident check and in-body header
while it is writing out the email. It's much simpler to do at this
level (because we haven't done any quoting yet), and any workflow
based on format-patch can easily turn it on.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The primary invariant of sort_in_topological_order() is that a
parent commit is not emitted until all children of it are. When
traversing a forked history like this with "git log C E":
A----B----C
\
D----E
we ensure that A is emitted after all of B, C, D, and E are done, B
has to wait until C is done, and D has to wait until E is done.
In some applications, however, we would further want to control how
these child commits B, C, D and E on two parallel ancestry chains
are shown.
Most of the time, we would want to see C and B emitted together, and
then E and D, and finally A (i.e. the --topo-order output). The
"lifo" parameter of the sort_in_topological_order() function is used
to control this behaviour. We start the traversal by knowing two
commits, C and E. While keeping in mind that we also need to
inspect E later, we pick C first to inspect, and we notice and
record that B needs to be inspected. By structuring the "work to be
done" set as a LIFO stack, we ensure that B is inspected next,
before other in-flight commits we had known that we will need to
inspect, e.g. E.
When showing in --date-order, we would want to see commits ordered
by timestamps, i.e. show C, E, B and D in this order before showing
A, possibly mixing commits from two parallel histories together.
When "lifo" parameter is set to false, the function keeps the "work
to be done" set sorted in the date order to realize this semantics.
After inspecting C, we add B to the "work to be done" set, but the
next commit we inspect from the set is E which is newer than B.
The name "lifo", however, is too strongly tied to the way how the
function implements its behaviour, and does not describe what the
behaviour _means_.
Replace this field with an enum rev_sort_order, with two possible
values: REV_SORT_IN_GRAPH_ORDER and REV_SORT_BY_COMMIT_DATE, and
update the existing code. The mechanical replacement rule is:
"lifo == 0" is equivalent to "sort_order == REV_SORT_BY_COMMIT_DATE"
"lifo == 1" is equivalent to "sort_order == REV_SORT_IN_GRAPH_ORDER"
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Currently, "diff" and "cat-file" for blobs honor "--textconv" options
(with the former defaulting to "--textconv" and the latter to
"--no-textconv") whereas "show" does not honor this option, even though
it takes diff options.
Make "show" on blobs honor "--textconv" when it is asked. The default
is not to apply textconv, which is in line with what "cat-file" does.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The diff_opt infrastructure sets flags based on defaults and command
line options. It is impossible to tell whether a flag has been set
as a default or on explicit request. Update the structure so that
this detection is possible:
* Add an extra "opt->touched_flags" that keeps track of all the
fields that have been touched by DIFF_OPT_SET and DIFF_OPT_CLR.
* You may continue setting the default values to the flags, like
commands in the "log" family do in cmd_log_init_defaults(), but
after you finished setting the defaults, you clear the
touched_flags field;
* And then you let the usual callchain call diff_opt_parse(),
allowing the opt->flags be set or unset, while keeping track of
which bits the user touched;
* There is an optional callback "opt->set_default" that is called
at the very beginning to let you inspect touched_flags and update
opt->flags appropriately, before the remainder of the diffcore
machinery is set up, taking the opt->flags value into account.
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Replace '<since>..<until>' with '<revision range>', in accordance with
the documentation.
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Now that the cover-letter code has been shuffled, we can do some
cleanups.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Also, add a new option: 'auto', so if there's more than one patch, the
cover letter is generated, otherwise it's not.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
OPT_BOOLEAN is deprecated, and this is what we want.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
By moving the part that relies on rev->pending earlier, where we are
already checking the special case where there's only one ref.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If we do it after the revision traversal we can be sure that this is
indeed a commit that will be processed (i.e. not a merge) and it's the
top most one (thus removing the NEEDSWORK comment, at least we show the
same as 'git diff --stat' output that appears in the cover-letter).
While we are at it, since we know there's nothing to generate, exit
sooner in all cases, like --cover-letter currently does.
Also, if there's nothing to generate and cover-letter is specified, a
different code-path might be triggered that is not currently covered in
the test-case, so add a test for it.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is a rewrite of much of Bo's work, mainly in an effort to split
it into smaller, easier to understand routines.
The algorithm is built around the struct range_set, which encodes a
series of line ranges as intervals [a,b). This is used in two
contexts:
* A set of lines we are tracking (which will change as we dig through
history).
* To encode diffs, as pairs of ranges.
The main routine is range_set_map_across_diff(). It processes the
diff between a commit C and some parent P. It determines which diff
hunks are relevant to the ranges tracked in C, and computes the new
ranges for P.
The algorithm is then simply to process history in topological order
from newest to oldest, computing ranges and (partial) diffs. At
branch points, we need to merge the ranges we are watching. We will
find that many commits do not affect the chosen ranges, and mark them
TREESAME (in addition to those already filtered by pathspec limiting).
Another pass of history simplification then gets rid of such commits.
This is wired as an extra filtering pass in the log machinery. This
currently only reduces code duplication, but should allow for other
simplifications and options to be used.
Finally, we hook a diff printer into the output chain. Ideally we
would wire directly into the diff logic, to optionally use features
like word diff. However, that will require some major reworking of
the diff chain, so we completely replace the output with our own diff
for now.
As this was a GSoC project, and has quite some history by now, many
people have helped. In no particular order, thanks go to
Jakub Narebski <jnareb@gmail.com>
Jens Lehmann <Jens.Lehmann@web.de>
Jonathan Nieder <jrnieder@gmail.com>
Junio C Hamano <gitster@pobox.com>
Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Will Palmer <wmpalmer@gmail.com>
Apologies to everyone I forgot.
Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
"show --show-signature" and "log --show-signature" do not read the
gpg.program setting from git config, even though, commit signing,
tag signing, and tag verification honor it.
Signed-off-by: Jacob Sarvis <jsarvis@openspan.com>
Signed-off-by: Hans Brigman <hbrigman@openspan.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is a preparation step for merging with append_signoff from
sequencer.c
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Brandon Casey <bcasey@nvidia.com>
Reviewed-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Jeff King