From bf8e65b30b77308710f14d523782f99a4a23eb55 Mon Sep 17 00:00:00 2001 From: Denton Liu Date: Tue, 15 Oct 2019 02:06:40 -0700 Subject: format-patch: teach --cover-from-description option Before, when format-patch generated a cover letter, only the body would be populated with a branch's description while the subject would be populated with placeholder text. However, users may want to have the subject of their cover letter automatically populated in the same way. Teach format-patch to accept the `--cover-from-description` option and corresponding `format.coverFromDescription` config, allowing users to populate different parts of the cover letter (including the subject now). Signed-off-by: Denton Liu Signed-off-by: Junio C Hamano diff --git a/Documentation/config/format.txt b/Documentation/config/format.txt index cb629fa..735dfcf 100644 --- a/Documentation/config/format.txt +++ b/Documentation/config/format.txt @@ -36,6 +36,12 @@ format.subjectPrefix:: The default for format-patch is to output files with the '[PATCH]' subject prefix. Use this variable to change that prefix. +format.coverFromDescription:: + The default mode for format-patch to determine which parts of + the cover letter will be populated using the branch's + description. See the `--cover-from-description` option in + linkgit:git-format-patch[1]. + format.signature:: The default for format-patch is to output a signature containing the Git version number. Use this variable to change that default. diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt index 0ac56f4..6800e1a 100644 --- a/Documentation/git-format-patch.txt +++ b/Documentation/git-format-patch.txt @@ -19,6 +19,7 @@ SYNOPSIS [--start-number ] [--numbered-files] [--in-reply-to=] [--suffix=.] [--ignore-if-in-upstream] + [--cover-from-description=] [--rfc] [--subject-prefix=] [(--reroll-count|-v) ] [--to=] [--cc=] @@ -171,6 +172,26 @@ will want to ensure that threading is disabled for `git send-email`. patches being generated, and any patch that matches is ignored. +--cover-from-description=:: + Controls which parts of the cover letter will be automatically + populated using the branch's description. ++ +If `` is `message` or `default`, the cover letter subject will be +populated with placeholder text. The body of the cover letter will be +populated with the branch's description. This is the default mode when +no configuration nor command line option is specified. ++ +If `` is `subject`, the first paragraph of the branch description will +populate the cover letter subject. The remainder of the description will +populate the body of the cover letter. ++ +If `` is `auto`, if the first paragraph of the branch description +is greater than 100 bytes, then the mode will be `message`, otherwise +`subject` will be used. ++ +If `` is `none`, both the cover letter subject and body will be +populated with placeholder text. + --subject-prefix=:: Instead of the standard '[PATCH]' prefix in the subject line, instead use '[]'. This @@ -347,6 +368,7 @@ with configuration variables. signOff = true outputDirectory = coverLetter = auto + coverFromDescription = auto ------------ diff --git a/builtin/log.c b/builtin/log.c index d212a83..04be559 100644 --- a/builtin/log.c +++ b/builtin/log.c @@ -37,6 +37,7 @@ #include "range-diff.h" #define MAIL_DEFAULT_WRAP 72 +#define COVER_FROM_AUTO_MAX_SUBJECT_LEN 100 /* Set a default date-time format for git log ("log.date" config variable) */ static const char *default_date_mode = NULL; @@ -777,6 +778,13 @@ enum thread_level { THREAD_DEEP }; +enum cover_from_description { + COVER_FROM_NONE, + COVER_FROM_MESSAGE, + COVER_FROM_SUBJECT, + COVER_FROM_AUTO +}; + static enum thread_level thread; static int do_signoff; static int base_auto; @@ -785,6 +793,23 @@ static const char *signature = git_version_string; static const char *signature_file; static enum cover_setting config_cover_letter; static const char *config_output_directory; +static enum cover_from_description cover_from_description_mode = COVER_FROM_MESSAGE; + +static enum cover_from_description parse_cover_from_description(const char *arg) +{ + if (!arg || !strcmp(arg, "default")) + return COVER_FROM_MESSAGE; + else if (!strcmp(arg, "none")) + return COVER_FROM_NONE; + else if (!strcmp(arg, "message")) + return COVER_FROM_MESSAGE; + else if (!strcmp(arg, "subject")) + return COVER_FROM_SUBJECT; + else if (!strcmp(arg, "auto")) + return COVER_FROM_AUTO; + else + die(_("%s: invalid cover from description mode"), arg); +} static int git_format_config(const char *var, const char *value, void *cb) { @@ -891,6 +916,10 @@ static int git_format_config(const char *var, const char *value, void *cb) } return 0; } + if (!strcmp(var, "format.coverfromdescription")) { + cover_from_description_mode = parse_cover_from_description(value); + return 0; + } return git_log_config(var, value, cb); } @@ -997,20 +1026,6 @@ static void print_signature(FILE *file) putc('\n', file); } -static void add_branch_description(struct strbuf *buf, const char *branch_name) -{ - struct strbuf desc = STRBUF_INIT; - if (!branch_name || !*branch_name) - return; - read_branch_desc(&desc, branch_name); - if (desc.len) { - strbuf_addch(buf, '\n'); - strbuf_addbuf(buf, &desc); - strbuf_addch(buf, '\n'); - } - strbuf_release(&desc); -} - static char *find_branch_name(struct rev_info *rev) { int i, positive = -1; @@ -1057,6 +1072,44 @@ static void show_diffstat(struct rev_info *rev, fprintf(rev->diffopt.file, "\n"); } +static void prepare_cover_text(struct pretty_print_context *pp, + const char *branch_name, + struct strbuf *sb, + const char *encoding, + int need_8bit_cte) +{ + const char *subject = "*** SUBJECT HERE ***"; + const char *body = "*** BLURB HERE ***"; + struct strbuf description_sb = STRBUF_INIT; + struct strbuf subject_sb = STRBUF_INIT; + + if (cover_from_description_mode == COVER_FROM_NONE) + goto do_pp; + + if (branch_name && *branch_name) + read_branch_desc(&description_sb, branch_name); + if (!description_sb.len) + goto do_pp; + + if (cover_from_description_mode == COVER_FROM_SUBJECT || + cover_from_description_mode == COVER_FROM_AUTO) + body = format_subject(&subject_sb, description_sb.buf, " "); + + if (cover_from_description_mode == COVER_FROM_MESSAGE || + (cover_from_description_mode == COVER_FROM_AUTO && + subject_sb.len > COVER_FROM_AUTO_MAX_SUBJECT_LEN)) + body = description_sb.buf; + else + subject = subject_sb.buf; + +do_pp: + pp_title_line(pp, &subject, sb, encoding, need_8bit_cte); + pp_remainder(pp, &body, sb, 0); + + strbuf_release(&description_sb); + strbuf_release(&subject_sb); +} + static void make_cover_letter(struct rev_info *rev, int use_stdout, struct commit *origin, int nr, struct commit **list, @@ -1064,8 +1117,6 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout, int quiet) { const char *committer; - const char *body = "*** SUBJECT HERE ***\n\n*** BLURB HERE ***\n"; - const char *msg; struct shortlog log; struct strbuf sb = STRBUF_INIT; int i; @@ -1095,15 +1146,12 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout, if (!branch_name) branch_name = find_branch_name(rev); - msg = body; pp.fmt = CMIT_FMT_EMAIL; pp.date_mode.type = DATE_RFC2822; pp.rev = rev; pp.print_email_subject = 1; pp_user_info(&pp, NULL, &sb, committer, encoding); - pp_title_line(&pp, &msg, &sb, encoding, need_8bit_cte); - pp_remainder(&pp, &msg, &sb, 0); - add_branch_description(&sb, branch_name); + prepare_cover_text(&pp, branch_name, &sb, encoding, need_8bit_cte); fprintf(rev->diffopt.file, "%s\n", sb.buf); strbuf_release(&sb); @@ -1545,6 +1593,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix) int use_patch_format = 0; int quiet = 0; int reroll_count = -1; + char *cover_from_description_arg = NULL; char *branch_name = NULL; char *base_commit = NULL; struct base_tree_info bases; @@ -1581,6 +1630,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix) { OPTION_CALLBACK, 0, "rfc", &rev, NULL, N_("Use [RFC PATCH] instead of [PATCH]"), PARSE_OPT_NOARG | PARSE_OPT_NONEG, rfc_callback }, + OPT_STRING(0, "cover-from-description", &cover_from_description_arg, + N_("cover-from-description-mode"), + N_("generate parts of a cover letter based on a branch's description")), { OPTION_CALLBACK, 0, "subject-prefix", &rev, N_("prefix"), N_("Use [] instead of [PATCH]"), PARSE_OPT_NONEG, subject_prefix_callback }, @@ -1672,6 +1724,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix) PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN | PARSE_OPT_KEEP_DASHDASH); + if (cover_from_description_arg) + cover_from_description_mode = parse_cover_from_description(cover_from_description_arg); + if (0 < reroll_count) { struct strbuf sprefix = STRBUF_INIT; strbuf_addf(&sprefix, "%s v%d", diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh index 72b0989..88db013 100755 --- a/t/t4014-format-patch.sh +++ b/t/t4014-format-patch.sh @@ -1517,6 +1517,178 @@ test_expect_success 'format patch ignores color.ui' ' test_cmp expect actual ' +test_expect_success 'cover letter with invalid --cover-from-description and config' ' + test_config branch.rebuild-1.description "config subject + +body" && + test_must_fail git format-patch --cover-letter --cover-from-description garbage master && + test_config format.coverFromDescription garbage && + test_must_fail git format-patch --cover-letter master +' + +test_expect_success 'cover letter with format.coverFromDescription = default' ' + test_config branch.rebuild-1.description "config subject + +body" && + test_config format.coverFromDescription default && + git checkout rebuild-1 && + git format-patch --stdout --cover-letter master >actual && + grep "^Subject: \[PATCH 0/2\] \*\*\* SUBJECT HERE \*\*\*$" actual && + ! grep "^\*\*\* BLURB HERE \*\*\*$" actual && + grep "^config subject$" actual && + grep "^body$" actual +' + +test_expect_success 'cover letter with --cover-from-description default' ' + test_config branch.rebuild-1.description "config subject + +body" && + git checkout rebuild-1 && + git format-patch --stdout --cover-letter --cover-from-description default master >actual && + grep "^Subject: \[PATCH 0/2\] \*\*\* SUBJECT HERE \*\*\*$" actual && + ! grep "^\*\*\* BLURB HERE \*\*\*$" actual && + grep "^config subject$" actual && + grep "^body$" actual +' + +test_expect_success 'cover letter with format.coverFromDescription = none' ' + test_config branch.rebuild-1.description "config subject + +body" && + test_config format.coverFromDescription none && + git checkout rebuild-1 && + git format-patch --stdout --cover-letter master >actual && + grep "^Subject: \[PATCH 0/2\] \*\*\* SUBJECT HERE \*\*\*$" actual && + grep "^\*\*\* BLURB HERE \*\*\*$" actual && + ! grep "^config subject$" actual && + ! grep "^body$" actual +' + +test_expect_success 'cover letter with --cover-from-description none' ' + test_config branch.rebuild-1.description "config subject + +body" && + git checkout rebuild-1 && + git format-patch --stdout --cover-letter --cover-from-description none master >actual && + grep "^Subject: \[PATCH 0/2\] \*\*\* SUBJECT HERE \*\*\*$" actual && + grep "^\*\*\* BLURB HERE \*\*\*$" actual && + ! grep "^config subject$" actual && + ! grep "^body$" actual +' + +test_expect_success 'cover letter with format.coverFromDescription = message' ' + test_config branch.rebuild-1.description "config subject + +body" && + test_config format.coverFromDescription message && + git checkout rebuild-1 && + git format-patch --stdout --cover-letter master >actual && + grep "^Subject: \[PATCH 0/2\] \*\*\* SUBJECT HERE \*\*\*$" actual && + ! grep "^\*\*\* BLURB HERE \*\*\*$" actual && + grep "^config subject$" actual && + grep "^body$" actual +' + +test_expect_success 'cover letter with --cover-from-description message' ' + test_config branch.rebuild-1.description "config subject + +body" && + git checkout rebuild-1 && + git format-patch --stdout --cover-letter --cover-from-description message master >actual && + grep "^Subject: \[PATCH 0/2\] \*\*\* SUBJECT HERE \*\*\*$" actual && + ! grep "^\*\*\* BLURB HERE \*\*\*$" actual && + grep "^config subject$" actual && + grep "^body$" actual +' + +test_expect_success 'cover letter with format.coverFromDescription = subject' ' + test_config branch.rebuild-1.description "config subject + +body" && + test_config format.coverFromDescription subject && + git checkout rebuild-1 && + git format-patch --stdout --cover-letter master >actual && + grep "^Subject: \[PATCH 0/2\] config subject$" actual && + ! grep "^\*\*\* BLURB HERE \*\*\*$" actual && + ! grep "^config subject$" actual && + grep "^body$" actual +' + +test_expect_success 'cover letter with --cover-from-description subject' ' + test_config branch.rebuild-1.description "config subject + +body" && + git checkout rebuild-1 && + git format-patch --stdout --cover-letter --cover-from-description subject master >actual && + grep "^Subject: \[PATCH 0/2\] config subject$" actual && + ! grep "^\*\*\* BLURB HERE \*\*\*$" actual && + ! grep "^config subject$" actual && + grep "^body$" actual +' + +test_expect_success 'cover letter with format.coverFromDescription = auto (short subject line)' ' + test_config branch.rebuild-1.description "config subject + +body" && + test_config format.coverFromDescription auto && + git checkout rebuild-1 && + git format-patch --stdout --cover-letter master >actual && + grep "^Subject: \[PATCH 0/2\] config subject$" actual && + ! grep "^\*\*\* BLURB HERE \*\*\*$" actual && + ! grep "^config subject$" actual && + grep "^body$" actual +' + +test_expect_success 'cover letter with --cover-from-description auto (short subject line)' ' + test_config branch.rebuild-1.description "config subject + +body" && + git checkout rebuild-1 && + git format-patch --stdout --cover-letter --cover-from-description auto master >actual && + grep "^Subject: \[PATCH 0/2\] config subject$" actual && + ! grep "^\*\*\* BLURB HERE \*\*\*$" actual && + ! grep "^config subject$" actual && + grep "^body$" actual +' + +test_expect_success 'cover letter with format.coverFromDescription = auto (long subject line)' ' + test_config branch.rebuild-1.description "this is a really long first line and it is over 100 characters long which is the threshold for long subjects + +body" && + test_config format.coverFromDescription auto && + git checkout rebuild-1 && + git format-patch --stdout --cover-letter master >actual && + grep "^Subject: \[PATCH 0/2\] \*\*\* SUBJECT HERE \*\*\*$" actual && + ! grep "^\*\*\* BLURB HERE \*\*\*$" actual && + grep "^this is a really long first line and it is over 100 characters long which is the threshold for long subjects$" actual && + grep "^body$" actual +' + +test_expect_success 'cover letter with --cover-from-description auto (long subject line)' ' + test_config branch.rebuild-1.description "this is a really long first line and it is over 100 characters long which is the threshold for long subjects + +body" && + git checkout rebuild-1 && + git format-patch --stdout --cover-letter --cover-from-description auto master >actual && + grep "^Subject: \[PATCH 0/2\] \*\*\* SUBJECT HERE \*\*\*$" actual && + ! grep "^\*\*\* BLURB HERE \*\*\*$" actual && + grep "^this is a really long first line and it is over 100 characters long which is the threshold for long subjects$" actual && + grep "^body$" actual +' + +test_expect_success 'cover letter with command-line --cover-from-description overrides config' ' + test_config branch.rebuild-1.description "config subject + +body" && + test_config format.coverFromDescription none && + git checkout rebuild-1 && + git format-patch --stdout --cover-letter --cover-from-description subject master >actual && + grep "^Subject: \[PATCH 0/2\] config subject$" actual && + ! grep "^\*\*\* BLURB HERE \*\*\*$" actual && + ! grep "^config subject$" actual && + grep "^body$" actual +' + test_expect_success 'cover letter using branch description (1)' ' git checkout rebuild-1 && test_config branch.rebuild-1.description hello && diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh index 75512c3..5187e2e 100755 --- a/t/t9902-completion.sh +++ b/t/t9902-completion.sh @@ -1548,7 +1548,10 @@ test_expect_success 'complete tree filename with metacharacters' ' ' test_expect_success PERL 'send-email' ' - test_completion "git send-email --cov" "--cover-letter " && + test_completion "git send-email --cov" <<-\EOF && + --cover-from-description=Z + --cover-letter Z + EOF test_completion "git send-email ma" "master " ' -- cgit v0.10.2-6-g49f6