зеркало из https://github.com/microsoft/git.git
format-patch: add an option to suppress commit hash
Oftentimes, patches created by git format-patch will be stored in version control or compared with diff. In these cases, two otherwise identical patches can have different commit hashes, leading to diff noise. Teach git format-patch a --zero-commit option that instead produces an all-zero hash to avoid this diff noise. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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3e56e7245c
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3a30aa1787
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@ -256,6 +256,10 @@ you can use `--suffix=-patch` to get `0001-description-of-my-change-patch`.
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using this option cannot be applied properly, but they are
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still useful for code review.
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--zero-commit::
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Output an all-zero hash in each patch's From header instead
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of the hash of the commit.
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--root::
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Treat the revision argument as a <revision range>, even if it
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is just a single commit (that would normally be treated as a
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@ -1196,6 +1196,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
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int cover_letter = -1;
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int boundary_count = 0;
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int no_binary_diff = 0;
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int zero_commit = 0;
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struct commit *origin = NULL;
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const char *in_reply_to = NULL;
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struct patch_ids ids;
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@ -1236,6 +1237,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
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PARSE_OPT_NOARG | PARSE_OPT_NONEG, keep_callback },
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OPT_BOOL(0, "no-binary", &no_binary_diff,
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N_("don't output binary diffs")),
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OPT_BOOL(0, "zero-commit", &zero_commit,
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N_("output all-zero hash in From header")),
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OPT_BOOL(0, "ignore-if-in-upstream", &ignore_if_in_upstream,
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N_("don't include a patch matching a commit upstream")),
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{ OPTION_SET_INT, 'p', "no-stat", &use_patch_format, NULL,
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@ -1380,6 +1383,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
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/* Always generate a patch */
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rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
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rev.zero_commit = zero_commit;
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if (!DIFF_OPT_TST(&rev.diffopt, TEXT) && !no_binary_diff)
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DIFF_OPT_SET(&rev.diffopt, BINARY);
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@ -342,7 +342,8 @@ void log_write_email_headers(struct rev_info *opt, struct commit *commit,
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{
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const char *subject = NULL;
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const char *extra_headers = opt->extra_headers;
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const char *name = oid_to_hex(&commit->object.oid);
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const char *name = oid_to_hex(opt->zero_commit ?
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&null_oid : &commit->object.oid);
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*need_8bit_cte_p = 0; /* unknown */
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if (opt->total > 0) {
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@ -135,6 +135,7 @@ struct rev_info {
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pretty_given:1,
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abbrev_commit:1,
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abbrev_commit_given:1,
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zero_commit:1,
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use_terminator:1,
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missing_newline:1,
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date_mode_explicit:1,
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@ -1431,4 +1431,11 @@ test_expect_success 'cover letter auto user override' '
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test_line_count = 2 list
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'
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test_expect_success 'format-patch --zero-commit' '
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git format-patch --zero-commit --stdout v2..v1 >patch2 &&
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grep "^From " patch2 | sort | uniq >actual &&
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echo "From $_z40 Mon Sep 17 00:00:00 2001" >expect &&
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test_cmp expect actual
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'
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test_done
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