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revision: add separate field for "-m" of "diff-index -m"

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Add separate 'match_missing' field for diff-index to use and set it when we
encounter "-m" option. This field won't then be cleared when another meaning of
"-m" is reverted (e.g., by "--no-diff-merges"), nor it will be affected by
future option(s) that might drive 'ignore_merges' field.

Use this new field from diff-lib:do_oneway_diff() instead of reusing
'ignore_merges' field.

Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Sergey Organov
2020-08-31 23:14:22 +03:00
committed by Junio C Hamano
parent d9cd433147
commit 572fc9aa54
3 changed files with 9 additions and 8 deletions
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6
revision.c
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@ -2344,7 +2344,13 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
revs->diffopt.flags.recursive = 1;
revs->diffopt.flags.tree_in_recursive = 1;
} else if (!strcmp(arg, "-m")) {
/*
* To "diff-index", "-m" means "match missing", and to the "log"
* family of commands, it means "show full diff for merges". Set
* both fields appropriately.
*/
revs->ignore_merges = 0;
revs->match_missing = 1;
} else if ((argcount = parse_long_opt("diff-merges", argv, &optarg))) {
if (!strcmp(optarg, "off")) {
revs->ignore_merges = 1;