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85bf0b6d1d1d33f4935b30ccd587ddf5455f5225 blob 2011 bytes (raw)

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#include "diff-merges.h"

#include "revision.h"

void diff_merges_init_revs(struct rev_info *revs) {
	revs->ignore_merges = -1;
}

int diff_merges_parse_opts(struct rev_info *revs, const char **argv) {
	int argcount;
	const char *optarg;
	const char *arg = argv[0];

	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 (!strcmp(arg, "-c")) {
		revs->diff = 1;
		revs->dense_combined_merges = 0;
		revs->combine_merges = 1;
	} else if (!strcmp(arg, "--cc")) {
		revs->diff = 1;
		revs->dense_combined_merges = 1;
		revs->combine_merges = 1;
	} else if (!strcmp(arg, "--no-diff-merges")) {
		revs->ignore_merges = 1;
	} else if (!strcmp(arg, "--combined-all-paths")) {
		revs->diff = 1;
		revs->combined_all_paths = 1;
	} else if ((argcount = parse_long_opt("diff-merges", argv, &optarg))) {
		if (!strcmp(optarg, "off")) {
			revs->ignore_merges = 1;
		} else {
			die(_("unknown value for --diff-merges: %s"), optarg);
		}
	} else
		return 0;

	return 1;
}

void diff_merges_setup_revs(struct rev_info *revs)
{
	if (revs->combine_merges && revs->ignore_merges < 0)
		revs->ignore_merges = 0;
	if (revs->ignore_merges < 0)
		revs->ignore_merges = 1;
	if (revs->combined_all_paths && !revs->combine_merges)
		die("--combined-all-paths makes no sense without -c or --cc");
}

void diff_merges_first_parent_defaults_to_enable(struct rev_info *revs) {
	if (revs->first_parent_only && revs->ignore_merges < 0)
		revs->ignore_merges = 0;
}

void diff_merges_default_to_dense_combined(struct rev_info *revs) {
	if (revs->ignore_merges < 0) {
		/* There was no "-m" variant on the command line */
		revs->ignore_merges = 0;
		if (!revs->first_parent_only && !revs->combine_merges) {
			/* No "--first-parent", "-c", or "--cc" */
			revs->combine_merges = 1;
			revs->dense_combined_merges = 1;
		}
	}
}
debug log:

solving 85bf0b6d1d1d ...
found 85bf0b6d1d1d in https://public-inbox.org/git/20201101193330.24775-7-sorganov@gmail.com/ ||
	https://public-inbox.org/git/20201108213838.4880-7-sorganov@gmail.com/
found 8b9dd4ad5625 in https://public-inbox.org/git/20201101193330.24775-6-sorganov@gmail.com/ ||
	https://public-inbox.org/git/20201108213838.4880-6-sorganov@gmail.com/

applying [1/4] https://public-inbox.org/git/20201101193330.24775-6-sorganov@gmail.com/
diff --git a/diff-merges.c b/diff-merges.c
new file mode 100644
index 000000000000..8b9dd4ad5625

Checking patch diff-merges.c...
Applied patch diff-merges.c cleanly.

skipping https://public-inbox.org/git/20201108213838.4880-6-sorganov@gmail.com/ for 8b9dd4ad5625
index at:
100644 8b9dd4ad56256a6111d1e4cee168cbdc5bea2ad0	diff-merges.c

applying [2/4] https://public-inbox.org/git/20201101193330.24775-7-sorganov@gmail.com/
diff --git a/diff-merges.c b/diff-merges.c
index 8b9dd4ad5625..85bf0b6d1d1d 100644

Checking patch diff-merges.c...
Applied patch diff-merges.c cleanly.

skipping https://public-inbox.org/git/20201108213838.4880-7-sorganov@gmail.com/ for 85bf0b6d1d1d
index at:
100644 85bf0b6d1d1d33f4935b30ccd587ddf5455f5225	diff-merges.c

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