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Fix long standing inconsistency between -c/--cc that do imply -p on
one side, and -m that did not imply -p on the other side.
Change corresponding test accordingly, as "log -m" output should now
match one from "log -m -p", rather than from just "log".
Change documentation accordingly.
NOTES:
After this patch
git log -m
produces diffs without need to provide -p as well, that improves both
consistency and usability. It gets even more useful if one sets
"log.diffMerges" configuration variable to "first-parent" to force -m
produce usual diff with respect to first parent only.
This patch, however, does not change behavior when specific diff
format is explicitly provided on the command-line, so that commands
like
git log -m --raw
git log -m --stat
are not affected, nor does it change commands where specific diff
format is active by default, such as:
git diff-tree -m
It's also worth to be noticed that exact historical semantics of -m is
still provided by --diff-merges=separate.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This is refactoring change in preparation for the next commit that
will let -m imply -p.
The old name doesn't match the intention to let not only -c/-cc imply
-p, but also -m, that is not a "combined" format, so we rename the
flag accordingly.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Move specific handling of "-m" for diff-index to diff-index.c, so
diff-merges is left to handle only diff for merges options.
Being a better design by itself, this is especially essential in
preparation for letting -m imply -p, as "diff-index -m" obviously
should not imply -p, as it's entirely unrelated.
To handle this, in addition to moving specific diff-index "-m" code
out of diff-merges, we introduce new
diff_merges_suppress_options_parsing()
and call it before generic options processing in cmd_diff_index().
This new diff_merges_suppress_options_parsing() could then be reused
and called before invocations of setup_revisions() for other commands
that don't need --diff-merges options, but that's outside of the scope
of these patch series.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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New log.diffMerges configuration variable sets the format that
--diff-merges=on will be using. The default is "separate".
t4013: add the following tests for log.diffMerges config:
* Test that wrong values are denied.
* Test that the value of log.diffMerges properly affects both
--diff-merges=on and -m.
t9902: fix completion tests for log.d* to match log.diffMerges.
Added documentation for log.diffMerges.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Let -m option (and --diff-merges=m) enable the default format instead
of "separate", to be able to tune it with log.diffMerges option.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Split set_diff_merges() into separate parsing and execution functions,
the former to be reused for parsing of configuration values later in
the patch series.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Introduce the notion of default diff format for merges, and the option
"on" to select it. The default format is "separate" and can't yet
be changed, so effectively "on" is just a synonym for "separate"
for now. Add corresponding test to t4013.
This is in preparation for introducing log.diffMerges configuration
option that will let --diff-merges=on to be configured to any
supported format.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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As we now have --diff-merges={m|c|cc}, add --diff-merges=1 as synonym
for --diff-merges=first-parent, to have shorter mnemonics for it as
well.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This adds --diff-merges={m|c|cc} values that match mnemonics of old
options, for those who are used to them.
Note that, say, --diff-meres=cc behaves differently than --cc, as the
latter implies -p and therefore enables diffs for all the commits,
while the former enables output of diffs for merge commits only.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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New options don't have any visible effect unless -p is either given or
implied, as unlike -c/-cc we don't imply -p with --diff-merges. To fix
this, this patch adds new functionality by letting new options enable
output of diffs for merge commits only.
Add 'merges_need_diff' field and set it whenever diff output for merges is
enabled by any of the new options.
Extend diff output logic accordingly, to output diffs for merges when
'merges_need_diff' is set even when no -p has been provided.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Add 'combined_imply_patch' field and set it only for old --cc/-c
options, then imply -p if this flag is set instead of implying -p
whenever 'combined_merge' flag is set.
We don't want new --diff-merge options to imply -p, to make it
possible to enable output of diffs for merges independently from
non-merge commits. At the same time we want to preserve behavior of
old --c/-c/-m options and their interactions with --first-parent, to
stay backward-compatible.
This patch is first step in this direction: it separates old "--cc/-c
imply -p" logic from the rest of the options.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We first implement new options as exact synonyms for their original
counterparts, to get all the infrastructure right, and keep functional
improvements for later commits.
The following values are implemented:
--diff-merges= old equivalent
first|first-parent = --first-parent (only format implications)
sep|separate = -m
comb|combined = -c
dense| dense-combined = --cc
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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-c/--cc got precedence over -m only because of external logic where
corresponding flags are checked before that for -m. This is too
error-prone, so add code that explicitly makes these 3 options
mutually exclusive, so that the last option specified on the
command-line gets precedence.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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To prepare introduction of new options some of which will be synonyms
to existing options, let every option handling code just call
corresponding function.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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After getting rid of 'ignore_merges' field, the diff_merges_init_revs()
function became empty. Get rid of it.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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'ignore_merges' was 3-way field that served two distinct purposes that
we now assign to 2 new independent flags: 'separate_merges', and
'explicit_diff_merges'.
'separate_merges' tells that we need to output diff format containing
separate diff for every parent (as opposed to 'combine_merges').
'explicit_diff_merges' tells that at least one of diff-merges options
has been explicitly specified on the command line, so no defaults
should apply.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Logically, -m, -c, --cc specify 3 different formats for representing
merge commits, yet -m doesn't in fact override -c or --cc, that makes
no sense.
Fix -m to properly override -c/--cc, and change the tests accordingly.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Do not set revs->diff when we encounter an option that needs it, as
it'd be impossible to undo later. Besides, some other options than
what we handle here set this flag as well, and we'd interfere with
them trying to clear this flag later.
Rather set revs->diff, if finally needed, in diff_merges_setup_revs().
As an additional bonus, this also makes our code shorter.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Move logic that handles implying -p on -c/--cc from
log_setup_revisions_tweak() to diff_merges_setup_revs(), where it
belongs.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This new field allows us to separate format of diff for merges from
'first_parent_only' flag which primary purpose is limiting history
traversal.
This change further localizes diff format selection logic into the
diff-merges.c file.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Call it where given functionality is needed instead of direct
checking/tweaking of diff merges related fields.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This function sets all the relevant flags to disabled state, so that
no code that checks only one of them get it wrong.
Then we call this new function everywhere where diff merges output
suppression is needed.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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For clarity, define public functions in the order they are called, to
make logic inter-dependencies easier to grok.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Rename diff_merges_default_to_enable() to
diff_merges_default_to_first_parent() to match its semantics.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The checks for first_parent_only don't in fact belong to this module,
as the primary purpose of this flag is history traversal limiting, so
get it out of this module and rename the
diff_merges_first_parent_defaults_to_enable()
to
diff_merges_default_to_enable()
to match new semantics.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Use the same "diff_merges" prefix for all the diff merges function
names.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Create separate diff-merges.c and diff-merges.h files, and move all
the code related to handling of diff merges there.
Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Sergey Organov