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Merge branch 'so/log-diff-merge'

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"git log" learned a new "--diff-merges=<how>" option.

* so/log-diff-merge: (32 commits)
  t4013: add tests for --diff-merges=first-parent
  doc/git-show: include --diff-merges description
  doc/rev-list-options: document --first-parent changes merges format
  doc/diff-generate-patch: mention new --diff-merges option
  doc/git-log: describe new --diff-merges options
  diff-merges: add '--diff-merges=1' as synonym for 'first-parent'
  diff-merges: add old mnemonic counterparts to --diff-merges
  diff-merges: let new options enable diff without -p
  diff-merges: do not imply -p for new options
  diff-merges: implement new values for --diff-merges
  diff-merges: make -m/-c/--cc explicitly mutually exclusive
  diff-merges: refactor opt settings into separate functions
  diff-merges: get rid of now empty diff_merges_init_revs()
  diff-merges: group diff-merge flags next to each other inside 'rev_info'
  diff-merges: split 'ignore_merges' field
  diff-merges: fix -m to properly override -c/--cc
  t4013: add tests for -m failing to override -c/--cc
  t4013: support test_expect_failure through ':failure' magic
  diff-merges: revise revs->diff flag handling
  diff-merges: handle imply -p on -c/--cc logic for log.c
  ...
This commit is contained in:
Junio C Hamano
2021-02-05 16:40:44 -08:00
parent 30b29f044a af04d8f1a5
commit aac006aa99
21 changed files with 893 additions and 116 deletions
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22
builtin/log.c
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@ -12,6 +12,7 @@
#include "color.h"
#include "commit.h"
#include "diff.h"
#include "diff-merges.h"
#include "revision.h"
#include "log-tree.h"
#include "builtin.h"
@ -607,15 +608,10 @@ static int show_tree_object(const struct object_id *oid,
static void show_setup_revisions_tweak(struct rev_info *rev,
struct setup_revision_opt *opt)
{
if (rev->ignore_merges < 0) {
/* There was no "-m" variant on the command line */
rev->ignore_merges = 0;
if (!rev->first_parent_only && !rev->combine_merges) {
/* No "--first-parent", "-c", or "--cc" */
rev->combine_merges = 1;
rev->dense_combined_merges = 1;
}
}
if (rev->first_parent_only)
diff_merges_default_to_first_parent(rev);
else
diff_merges_default_to_dense_combined(rev);
if (!rev->diffopt.output_format)
rev->diffopt.output_format = DIFF_FORMAT_PATCH;
}
@ -736,12 +732,8 @@ static void log_setup_revisions_tweak(struct rev_info *rev,
rev->prune_data.nr == 1)
rev->diffopt.flags.follow_renames = 1;
/* Turn --cc/-c into -p --cc/-c when -p was not given */
if (!rev->diffopt.output_format && rev->combine_merges)
rev->diffopt.output_format = DIFF_FORMAT_PATCH;
if (rev->first_parent_only && rev->ignore_merges < 0)
rev->ignore_merges = 0;
if (rev->first_parent_only)
diff_merges_default_to_first_parent(rev);
}
int cmd_log(int argc, const char **argv, const char *prefix)