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Merge branch 'jk/log-fp-implies-m'

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"git log --first-parent -p" showed patches only for single-parent
commits on the first-parent chain; the "--first-parent" option has
been made to imply "-m".  Use "--no-diff-merges" to restore the
previous behaviour to omit patches for merge commits.

* jk/log-fp-implies-m:
  doc/git-log: clarify handling of merge commit diffs
  doc/git-log: move "-t" into diff-options list
  doc/git-log: drop "-r" diff option
  doc/git-log: move "Diff Formatting" from rev-list-options
  log: enable "-m" automatically with "--first-parent"
  revision: add "--no-diff-merges" option to counteract "-m"
  log: drop "--cc implies -m" logic
This commit is contained in:
Junio C Hamano
2020-08-17 17:02:49 -07:00
parent e6ec620d8b 5fbb4bc191
commit eca8c62a50
9 changed files with 158 additions and 55 deletions
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7
builtin/log.c
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@ -599,8 +599,8 @@ 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) {
/* There was no "-m" on the command line */
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" */
@ -732,8 +732,7 @@ static void log_setup_revisions_tweak(struct rev_info *rev,
if (!rev->diffopt.output_format && rev->combine_merges)
rev->diffopt.output_format = DIFF_FORMAT_PATCH;
/* Turn -m on when --cc/-c was given */
if (rev->combine_merges)
if (rev->first_parent_only && rev->ignore_merges < 0)
rev->ignore_merges = 0;
}