]> git.ipfire.org Git - thirdparty/git.git/commitdiff
builtin/log: stop using globals for format config
authorPatrick Steinhardt <ps@pks.im>
Mon, 27 May 2024 11:46:34 +0000 (13:46 +0200)
committerJunio C Hamano <gitster@pobox.com>
Mon, 27 May 2024 18:20:00 +0000 (11:20 -0700)
This commit does the exact same as the preceding commit, only for the
format configuration instead of the log configuration.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
builtin/log.c

index f5da29ee2a80487ca6de99732bdb817b78ca2e8c..890bf0c425822c0b85fb77daa6b726d3fd630e02 100644 (file)
@@ -945,36 +945,6 @@ int cmd_log(int argc, const char **argv, const char *prefix)
 
 /* format-patch */
 
-static const char *fmt_patch_suffix = ".patch";
-static int numbered = 0;
-static int auto_number = 1;
-
-static char *default_attach = NULL;
-
-static struct string_list extra_hdr = STRING_LIST_INIT_NODUP;
-static struct string_list extra_to = STRING_LIST_INIT_NODUP;
-static struct string_list extra_cc = STRING_LIST_INIT_NODUP;
-
-static void add_header(const char *value)
-{
-       struct string_list_item *item;
-       int len = strlen(value);
-       while (len && value[len - 1] == '\n')
-               len--;
-
-       if (!strncasecmp(value, "to: ", 4)) {
-               item = string_list_append(&extra_to, value + 4);
-               len -= 4;
-       } else if (!strncasecmp(value, "cc: ", 4)) {
-               item = string_list_append(&extra_cc, value + 4);
-               len -= 4;
-       } else {
-               item = string_list_append(&extra_hdr, value);
-       }
-
-       item->string[len] = '\0';
-}
-
 enum cover_setting {
        COVER_UNSET,
        COVER_OFF,
@@ -1001,17 +971,61 @@ enum auto_base_setting {
        AUTO_BASE_WHEN_ABLE
 };
 
-static enum thread_level thread;
-static int do_signoff;
-static enum auto_base_setting auto_base;
-static char *from;
-static const char *signature = git_version_string;
-static 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 int show_notes;
-static struct display_notes_opt notes_opt;
+struct format_config {
+       struct log_config log;
+       enum thread_level thread;
+       int do_signoff;
+       enum auto_base_setting auto_base;
+       char *base_commit;
+       char *from;
+       char *signature;
+       char *signature_file;
+       enum cover_setting config_cover_letter;
+       char *config_output_directory;
+       enum cover_from_description cover_from_description_mode;
+       int show_notes;
+       struct display_notes_opt notes_opt;
+       int numbered_cmdline_opt;
+       int numbered;
+       int auto_number;
+       char *default_attach;
+       struct string_list extra_hdr;
+       struct string_list extra_to;
+       struct string_list extra_cc;
+       int keep_subject;
+       int subject_prefix;
+       struct strbuf sprefix;
+       char *fmt_patch_suffix;
+};
+
+static void format_config_init(struct format_config *cfg)
+{
+       memset(cfg, 0, sizeof(*cfg));
+       log_config_init(&cfg->log);
+       cfg->cover_from_description_mode = COVER_FROM_MESSAGE;
+       cfg->auto_number = 1;
+       string_list_init_dup(&cfg->extra_hdr);
+       string_list_init_dup(&cfg->extra_to);
+       string_list_init_dup(&cfg->extra_cc);
+       strbuf_init(&cfg->sprefix, 0);
+       cfg->fmt_patch_suffix = xstrdup(".patch");
+}
+
+static void format_config_release(struct format_config *cfg)
+{
+       log_config_release(&cfg->log);
+       free(cfg->base_commit);
+       free(cfg->from);
+       free(cfg->signature);
+       free(cfg->signature_file);
+       free(cfg->config_output_directory);
+       free(cfg->default_attach);
+       string_list_clear(&cfg->extra_hdr, 0);
+       string_list_clear(&cfg->extra_to, 0);
+       string_list_clear(&cfg->extra_cc, 0);
+       strbuf_release(&cfg->sprefix);
+       free(cfg->fmt_patch_suffix);
+}
 
 static enum cover_from_description parse_cover_from_description(const char *arg)
 {
@@ -1029,27 +1043,51 @@ static enum cover_from_description parse_cover_from_description(const char *arg)
                die(_("%s: invalid cover from description mode"), arg);
 }
 
+static void add_header(struct format_config *cfg, const char *value)
+{
+       struct string_list_item *item;
+       int len = strlen(value);
+       while (len && value[len - 1] == '\n')
+               len--;
+
+       if (!strncasecmp(value, "to: ", 4)) {
+               item = string_list_append(&cfg->extra_to, value + 4);
+               len -= 4;
+       } else if (!strncasecmp(value, "cc: ", 4)) {
+               item = string_list_append(&cfg->extra_cc, value + 4);
+               len -= 4;
+       } else {
+               item = string_list_append(&cfg->extra_hdr, value);
+       }
+
+       item->string[len] = '\0';
+}
+
 static int git_format_config(const char *var, const char *value,
                             const struct config_context *ctx, void *cb)
 {
+       struct format_config *cfg = cb;
+
        if (!strcmp(var, "format.headers")) {
                if (!value)
                        die(_("format.headers without value"));
-               add_header(value);
+               add_header(cfg, value);
                return 0;
        }
-       if (!strcmp(var, "format.suffix"))
-               return git_config_string(&fmt_patch_suffix, var, value);
+       if (!strcmp(var, "format.suffix")) {
+               FREE_AND_NULL(cfg->fmt_patch_suffix);
+               return git_config_string((const char **) &cfg->fmt_patch_suffix, var, value);
+       }
        if (!strcmp(var, "format.to")) {
                if (!value)
                        return config_error_nonbool(var);
-               string_list_append(&extra_to, value);
+               string_list_append(&cfg->extra_to, value);
                return 0;
        }
        if (!strcmp(var, "format.cc")) {
                if (!value)
                        return config_error_nonbool(var);
-               string_list_append(&extra_cc, value);
+               string_list_append(&cfg->extra_cc, value);
                return 0;
        }
        if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff") ||
@@ -1058,69 +1096,76 @@ static int git_format_config(const char *var, const char *value,
        }
        if (!strcmp(var, "format.numbered")) {
                if (value && !strcasecmp(value, "auto")) {
-                       auto_number = 1;
+                       cfg->auto_number = 1;
                        return 0;
                }
-               numbered = git_config_bool(var, value);
-               auto_number = auto_number && numbered;
+               cfg->numbered = git_config_bool(var, value);
+               cfg->auto_number = cfg->auto_number && cfg->numbered;
                return 0;
        }
        if (!strcmp(var, "format.attach")) {
-               if (value && *value)
-                       default_attach = xstrdup(value);
-               else if (value && !*value)
-                       FREE_AND_NULL(default_attach);
-               else
-                       default_attach = xstrdup(git_version_string);
+               if (value && *value) {
+                       FREE_AND_NULL(cfg->default_attach);
+                       cfg->default_attach = xstrdup(value);
+               } else if (value && !*value) {
+                       FREE_AND_NULL(cfg->default_attach);
+               } else {
+                       FREE_AND_NULL(cfg->default_attach);
+                       cfg->default_attach = xstrdup(git_version_string);
+               }
                return 0;
        }
        if (!strcmp(var, "format.thread")) {
                if (value && !strcasecmp(value, "deep")) {
-                       thread = THREAD_DEEP;
+                       cfg->thread = THREAD_DEEP;
                        return 0;
                }
                if (value && !strcasecmp(value, "shallow")) {
-                       thread = THREAD_SHALLOW;
+                       cfg->thread = THREAD_SHALLOW;
                        return 0;
                }
-               thread = git_config_bool(var, value) ? THREAD_SHALLOW : THREAD_UNSET;
+               cfg->thread = git_config_bool(var, value) ? THREAD_SHALLOW : THREAD_UNSET;
                return 0;
        }
        if (!strcmp(var, "format.signoff")) {
-               do_signoff = git_config_bool(var, value);
+               cfg->do_signoff = git_config_bool(var, value);
                return 0;
        }
-       if (!strcmp(var, "format.signature"))
-               return git_config_string(&signature, var, value);
-       if (!strcmp(var, "format.signaturefile"))
-               return git_config_pathname(&signature_file, var, value);
+       if (!strcmp(var, "format.signature")) {
+               FREE_AND_NULL(cfg->signature);
+               return git_config_string((const char **) &cfg->signature, var, value);
+       }
+       if (!strcmp(var, "format.signaturefile")) {
+               FREE_AND_NULL(cfg->signature_file);
+               return git_config_pathname(&cfg->signature_file, var, value);
+       }
        if (!strcmp(var, "format.coverletter")) {
                if (value && !strcasecmp(value, "auto")) {
-                       config_cover_letter = COVER_AUTO;
+                       cfg->config_cover_letter = COVER_AUTO;
                        return 0;
                }
-               config_cover_letter = git_config_bool(var, value) ? COVER_ON : COVER_OFF;
+               cfg->config_cover_letter = git_config_bool(var, value) ? COVER_ON : COVER_OFF;
                return 0;
        }
-       if (!strcmp(var, "format.outputdirectory"))
-               return git_config_string(&config_output_directory, var, value);
+       if (!strcmp(var, "format.outputdirectory")) {
+               FREE_AND_NULL(cfg->config_output_directory);
+               return git_config_string((const char **) &cfg->config_output_directory, var, value);
+       }
        if (!strcmp(var, "format.useautobase")) {
                if (value && !strcasecmp(value, "whenAble")) {
-                       auto_base = AUTO_BASE_WHEN_ABLE;
+                       cfg->auto_base = AUTO_BASE_WHEN_ABLE;
                        return 0;
                }
-               auto_base = git_config_bool(var, value) ? AUTO_BASE_ALWAYS : AUTO_BASE_NEVER;
+               cfg->auto_base = git_config_bool(var, value) ? AUTO_BASE_ALWAYS : AUTO_BASE_NEVER;
                return 0;
        }
        if (!strcmp(var, "format.from")) {
                int b = git_parse_maybe_bool(value);
-               free(from);
+               FREE_AND_NULL(cfg->from);
                if (b < 0)
-                       from = xstrdup(value);
+                       cfg->from = xstrdup(value);
                else if (b)
-                       from = xstrdup(git_committer_info(IDENT_NO_DATE));
-               else
-                       from = NULL;
+                       cfg->from = xstrdup(git_committer_info(IDENT_NO_DATE));
                return 0;
        }
        if (!strcmp(var, "format.forceinbodyfrom")) {
@@ -1130,15 +1175,15 @@ static int git_format_config(const char *var, const char *value,
        if (!strcmp(var, "format.notes")) {
                int b = git_parse_maybe_bool(value);
                if (b < 0)
-                       enable_ref_display_notes(&notes_opt, &show_notes, value);
+                       enable_ref_display_notes(&cfg->notes_opt, &cfg->show_notes, value);
                else if (b)
-                       enable_default_display_notes(&notes_opt, &show_notes);
+                       enable_default_display_notes(&cfg->notes_opt, &cfg->show_notes);
                else
-                       disable_display_notes(&notes_opt, &show_notes);
+                       disable_display_notes(&cfg->notes_opt, &cfg->show_notes);
                return 0;
        }
        if (!strcmp(var, "format.coverfromdescription")) {
-               cover_from_description_mode = parse_cover_from_description(value);
+               cfg->cover_from_description_mode = parse_cover_from_description(value);
                return 0;
        }
        if (!strcmp(var, "format.mboxrd")) {
@@ -1159,7 +1204,7 @@ static int git_format_config(const char *var, const char *value,
        if (!strcmp(var, "diff.noprefix"))
                return 0;
 
-       return git_log_config(var, value, ctx, cb);
+       return git_log_config(var, value, ctx, &cfg->log);
 }
 
 static const char *output_directory = NULL;
@@ -1247,7 +1292,7 @@ static void gen_message_id(struct rev_info *info, char *base)
        info->message_id = strbuf_detach(&buf, NULL);
 }
 
-static void print_signature(FILE *file)
+static void print_signature(const char *signature, FILE *file)
 {
        if (!signature || !*signature)
                return;
@@ -1317,14 +1362,15 @@ static void prepare_cover_text(struct pretty_print_context *pp,
                               const char *branch_name,
                               struct strbuf *sb,
                               const char *encoding,
-                              int need_8bit_cte)
+                              int need_8bit_cte,
+                              const struct format_config *cfg)
 {
        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)
+       if (cfg->cover_from_description_mode == COVER_FROM_NONE)
                goto do_pp;
 
        if (description_file && *description_file)
@@ -1334,13 +1380,13 @@ static void prepare_cover_text(struct pretty_print_context *pp,
        if (!description_sb.len)
                goto do_pp;
 
-       if (cover_from_description_mode == COVER_FROM_SUBJECT ||
-                       cover_from_description_mode == COVER_FROM_AUTO)
+       if (cfg->cover_from_description_mode == COVER_FROM_SUBJECT ||
+           cfg->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))
+       if (cfg->cover_from_description_mode == COVER_FROM_MESSAGE ||
+           (cfg->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;
@@ -1377,7 +1423,8 @@ static void make_cover_letter(struct rev_info *rev, int use_separate_file,
                              int nr, struct commit **list,
                              const char *description_file,
                              const char *branch_name,
-                             int quiet)
+                             int quiet,
+                             const struct format_config *cfg)
 {
        const char *committer;
        struct shortlog log;
@@ -1416,7 +1463,7 @@ static void make_cover_letter(struct rev_info *rev, int use_separate_file,
        pp.encode_email_headers = rev->encode_email_headers;
        pp_user_info(&pp, NULL, &sb, committer, encoding);
        prepare_cover_text(&pp, description_file, branch_name, &sb,
-                          encoding, need_8bit_cte);
+                          encoding, need_8bit_cte, cfg);
        fprintf(rev->diffopt.file, "%s\n", sb.buf);
 
        free(pp.after_subject);
@@ -1517,29 +1564,30 @@ static const char * const builtin_format_patch_usage[] = {
        NULL
 };
 
-static int keep_subject = 0;
+struct keep_callback_data {
+       struct format_config *cfg;
+       struct rev_info *revs;
+};
 
 static int keep_callback(const struct option *opt, const char *arg, int unset)
 {
+       struct keep_callback_data *data = opt->value;
        BUG_ON_OPT_NEG(unset);
        BUG_ON_OPT_ARG(arg);
-       ((struct rev_info *)opt->value)->total = -1;
-       keep_subject = 1;
+       data->revs->total = -1;
+       data->cfg->keep_subject = 1;
        return 0;
 }
 
-static int subject_prefix = 0;
-
 static int subject_prefix_callback(const struct option *opt, const char *arg,
                            int unset)
 {
-       struct strbuf *sprefix;
+       struct format_config *cfg = opt->value;
 
        BUG_ON_OPT_NEG(unset);
-       sprefix = opt->value;
-       subject_prefix = 1;
-       strbuf_reset(sprefix);
-       strbuf_addstr(sprefix, arg);
+       cfg->subject_prefix = 1;
+       strbuf_reset(&cfg->sprefix);
+       strbuf_addstr(&cfg->sprefix, arg);
        return 0;
 }
 
@@ -1556,15 +1604,14 @@ static int rfc_callback(const struct option *opt, const char *arg,
        return 0;
 }
 
-static int numbered_cmdline_opt = 0;
-
 static int numbered_callback(const struct option *opt, const char *arg,
                             int unset)
 {
+       struct format_config *cfg = opt->value;
        BUG_ON_OPT_ARG(arg);
-       *(int *)opt->value = numbered_cmdline_opt = unset ? 0 : 1;
+       cfg->numbered = cfg->numbered_cmdline_opt = unset ? 0 : 1;
        if (unset)
-               auto_number =  0;
+               cfg->auto_number =  0;
        return 0;
 }
 
@@ -1588,13 +1635,14 @@ static int output_directory_callback(const struct option *opt, const char *arg,
 
 static int thread_callback(const struct option *opt, const char *arg, int unset)
 {
-       enum thread_level *thread = (enum thread_level *)opt->value;
+       struct format_config *cfg = opt->value;
+
        if (unset)
-               *thread = THREAD_UNSET;
+               cfg->thread = THREAD_UNSET;
        else if (!arg || !strcmp(arg, "shallow"))
-               *thread = THREAD_SHALLOW;
+               cfg->thread = THREAD_SHALLOW;
        else if (!strcmp(arg, "deep"))
-               *thread = THREAD_DEEP;
+               cfg->thread = THREAD_DEEP;
        /*
         * Please update _git_formatpatch() in git-completion.bash
         * when you add new options.
@@ -1630,15 +1678,17 @@ static int inline_callback(const struct option *opt, const char *arg, int unset)
        return 0;
 }
 
-static int header_callback(const struct option *opt UNUSED, const char *arg,
+static int header_callback(const struct option *opt, const char *arg,
                           int unset)
 {
+       struct format_config *cfg = opt->value;
+
        if (unset) {
-               string_list_clear(&extra_hdr, 0);
-               string_list_clear(&extra_to, 0);
-               string_list_clear(&extra_cc, 0);
+               string_list_clear(&cfg->extra_hdr, 0);
+               string_list_clear(&cfg->extra_to, 0);
+               string_list_clear(&cfg->extra_cc, 0);
        } else {
-               add_header(arg);
+               add_header(cfg, arg);
        }
        return 0;
 }
@@ -1660,17 +1710,17 @@ static int from_callback(const struct option *opt, const char *arg, int unset)
 
 static int base_callback(const struct option *opt, const char *arg, int unset)
 {
-       const char **base_commit = opt->value;
+       struct format_config *cfg = opt->value;
 
        if (unset) {
-               auto_base = AUTO_BASE_NEVER;
-               *base_commit = NULL;
+               cfg->auto_base = AUTO_BASE_NEVER;
+               FREE_AND_NULL(cfg->base_commit);
        } else if (!strcmp(arg, "auto")) {
-               auto_base = AUTO_BASE_ALWAYS;
-               *base_commit = NULL;
+               cfg->auto_base = AUTO_BASE_ALWAYS;
+               FREE_AND_NULL(cfg->base_commit);
        } else {
-               auto_base = AUTO_BASE_NEVER;
-               *base_commit = arg;
+               cfg->auto_base = AUTO_BASE_NEVER;
+               cfg->base_commit = xstrdup(arg);
        }
        return 0;
 }
@@ -1681,7 +1731,7 @@ struct base_tree_info {
        struct object_id *patch_id;
 };
 
-static struct commit *get_base_commit(const char *base_commit,
+static struct commit *get_base_commit(const struct format_config *cfg,
                                      struct commit **list,
                                      int total)
 {
@@ -1689,9 +1739,9 @@ static struct commit *get_base_commit(const char *base_commit,
        struct commit **rev;
        int i = 0, rev_nr = 0, auto_select, die_on_failure, ret;
 
-       switch (auto_base) {
+       switch (cfg->auto_base) {
        case AUTO_BASE_NEVER:
-               if (base_commit) {
+               if (cfg->base_commit) {
                        auto_select = 0;
                        die_on_failure = 1;
                } else {
@@ -1701,11 +1751,11 @@ static struct commit *get_base_commit(const char *base_commit,
                break;
        case AUTO_BASE_ALWAYS:
        case AUTO_BASE_WHEN_ABLE:
-               if (base_commit) {
+               if (cfg->base_commit) {
                        BUG("requested automatic base selection but a commit was provided");
                } else {
                        auto_select = 1;
-                       die_on_failure = auto_base == AUTO_BASE_ALWAYS;
+                       die_on_failure = cfg->auto_base == AUTO_BASE_ALWAYS;
                }
                break;
        default:
@@ -1713,9 +1763,9 @@ static struct commit *get_base_commit(const char *base_commit,
        }
 
        if (!auto_select) {
-               base = lookup_commit_reference_by_name(base_commit);
+               base = lookup_commit_reference_by_name(cfg->base_commit);
                if (!base)
-                       die(_("unknown commit %s"), base_commit);
+                       die(_("unknown commit %s"), cfg->base_commit);
        } else {
                struct branch *curr_branch = branch_get(NULL);
                const char *upstream = branch_get_upstream(curr_branch, NULL);
@@ -1933,7 +1983,7 @@ static void infer_range_diff_ranges(struct strbuf *r1,
 
 int cmd_format_patch(int argc, const char **argv, const char *prefix)
 {
-       struct log_config cfg;
+       struct format_config cfg;
        struct commit *commit;
        struct commit **list = NULL;
        struct rev_info rev;
@@ -1958,7 +2008,6 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        char *cover_from_description_arg = NULL;
        char *description_file = NULL;
        char *branch_name = NULL;
-       char *base_commit = NULL;
        struct base_tree_info bases;
        struct commit *base;
        int show_progress = 0;
@@ -1969,18 +2018,24 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        struct strbuf rdiff1 = STRBUF_INIT;
        struct strbuf rdiff2 = STRBUF_INIT;
        struct strbuf rdiff_title = STRBUF_INIT;
-       struct strbuf sprefix = STRBUF_INIT;
        const char *rfc = NULL;
        int creation_factor = -1;
+       const char *signature = git_version_string;
+       const char *signature_file_arg = NULL;
+       struct keep_callback_data keep_callback_data = {
+               .cfg = &cfg,
+               .revs = &rev,
+       };
+       const char *fmt_patch_suffix = NULL;
 
        const struct option builtin_format_patch_options[] = {
-               OPT_CALLBACK_F('n', "numbered", &numbered, NULL,
+               OPT_CALLBACK_F('n', "numbered", &cfg, NULL,
                            N_("use [PATCH n/m] even with a single patch"),
                            PARSE_OPT_NOARG, numbered_callback),
-               OPT_CALLBACK_F('N', "no-numbered", &numbered, NULL,
+               OPT_CALLBACK_F('N', "no-numbered", &cfg, NULL,
                            N_("use [PATCH] even with multiple patches"),
                            PARSE_OPT_NOARG | PARSE_OPT_NONEG, no_numbered_callback),
-               OPT_BOOL('s', "signoff", &do_signoff, N_("add a Signed-off-by trailer")),
+               OPT_BOOL('s', "signoff", &cfg.do_signoff, N_("add a Signed-off-by trailer")),
                OPT_BOOL(0, "stdout", &use_stdout,
                            N_("print patches to standard out")),
                OPT_BOOL(0, "cover-letter", &cover_letter,
@@ -1993,7 +2048,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                            N_("start numbering patches at <n> instead of 1")),
                OPT_STRING('v', "reroll-count", &reroll_count, N_("reroll-count"),
                            N_("mark the series as Nth re-roll")),
-               OPT_INTEGER(0, "filename-max-length", &cfg.fmt_patch_name_max,
+               OPT_INTEGER(0, "filename-max-length", &cfg.log.fmt_patch_name_max,
                            N_("max length of output filename")),
                OPT_CALLBACK_F(0, "rfc", &rfc, N_("rfc"),
                               N_("add <rfc> (default 'RFC') before 'PATCH'"),
@@ -2003,13 +2058,13 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                            N_("generate parts of a cover letter based on a branch's description")),
                OPT_FILENAME(0, "description-file", &description_file,
                             N_("use branch description from file")),
-               OPT_CALLBACK_F(0, "subject-prefix", &sprefix, N_("prefix"),
+               OPT_CALLBACK_F(0, "subject-prefix", &cfg, N_("prefix"),
                            N_("use [<prefix>] instead of [PATCH]"),
                            PARSE_OPT_NONEG, subject_prefix_callback),
                OPT_CALLBACK_F('o', "output-directory", &output_directory,
                            N_("dir"), N_("store resulting files in <dir>"),
                            PARSE_OPT_NONEG, output_directory_callback),
-               OPT_CALLBACK_F('k', "keep-subject", &rev, NULL,
+               OPT_CALLBACK_F('k', "keep-subject", &keep_callback_data, NULL,
                            N_("don't strip/add [PATCH]"),
                            PARSE_OPT_NOARG | PARSE_OPT_NONEG, keep_callback),
                OPT_BOOL(0, "no-binary", &no_binary_diff,
@@ -2022,11 +2077,11 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                              N_("show patch format instead of default (patch + stat)"),
                              1, PARSE_OPT_NONEG),
                OPT_GROUP(N_("Messaging")),
-               OPT_CALLBACK(0, "add-header", NULL, N_("header"),
+               OPT_CALLBACK(0, "add-header", &cfg, N_("header"),
                            N_("add email header"), header_callback),
-               OPT_STRING_LIST(0, "to", &extra_to, N_("email"), N_("add To: header")),
-               OPT_STRING_LIST(0, "cc", &extra_cc, N_("email"), N_("add Cc: header")),
-               OPT_CALLBACK_F(0, "from", &from, N_("ident"),
+               OPT_STRING_LIST(0, "to", &cfg.extra_to, N_("email"), N_("add To: header")),
+               OPT_STRING_LIST(0, "cc", &cfg.extra_cc, N_("email"), N_("add Cc: header")),
+               OPT_CALLBACK_F(0, "from", &cfg.from, N_("ident"),
                            N_("set From address to <ident> (or committer ident if absent)"),
                            PARSE_OPT_OPTARG, from_callback),
                OPT_STRING(0, "in-reply-to", &in_reply_to, N_("message-id"),
@@ -2038,15 +2093,15 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                            N_("inline the patch"),
                            PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
                            inline_callback),
-               OPT_CALLBACK_F(0, "thread", &thread, N_("style"),
+               OPT_CALLBACK_F(0, "thread", &cfg, N_("style"),
                            N_("enable message threading, styles: shallow, deep"),
                            PARSE_OPT_OPTARG, thread_callback),
                OPT_STRING(0, "signature", &signature, N_("signature"),
                            N_("add a signature")),
-               OPT_CALLBACK_F(0, "base", &base_commit, N_("base-commit"),
+               OPT_CALLBACK_F(0, "base", &cfg, N_("base-commit"),
                               N_("add prerequisite tree info to the patch series"),
                               0, base_callback),
-               OPT_FILENAME(0, "signature-file", &signature_file,
+               OPT_FILENAME(0, "signature-file", &signature_file_arg,
                                N_("add a signature from a file")),
                OPT__QUIET(&quiet, N_("don't print the patch filenames")),
                OPT_BOOL(0, "progress", &show_progress,
@@ -2063,21 +2118,17 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                OPT_END()
        };
 
-       extra_hdr.strdup_strings = 1;
-       extra_to.strdup_strings = 1;
-       extra_cc.strdup_strings = 1;
-
-       log_config_init(&cfg);
+       format_config_init(&cfg);
        init_diff_ui_defaults();
-       init_display_notes(&notes_opt);
+       init_display_notes(&cfg.notes_opt);
        git_config(git_format_config, &cfg);
        repo_init_revisions(the_repository, &rev, prefix);
        git_config(grep_config, &rev.grep_filter);
 
-       rev.show_notes = show_notes;
-       memcpy(&rev.notes_opt, &notes_opt, sizeof(notes_opt));
+       rev.show_notes = cfg.show_notes;
+       memcpy(&rev.notes_opt, &cfg.notes_opt, sizeof(cfg.notes_opt));
        rev.commit_format = CMIT_FMT_EMAIL;
-       rev.encode_email_headers = cfg.default_encode_email_headers;
+       rev.encode_email_headers = cfg.log.default_encode_email_headers;
        rev.expand_tabs_in_log_default = 0;
        rev.verbose_header = 1;
        rev.diff = 1;
@@ -2088,12 +2139,12 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        s_r_opt.def = "HEAD";
        s_r_opt.revarg_opt = REVARG_COMMITTISH;
 
-       strbuf_addstr(&sprefix, cfg.fmt_patch_subject_prefix);
+       strbuf_addstr(&cfg.sprefix, cfg.log.fmt_patch_subject_prefix);
        if (format_no_prefix)
                diff_set_noprefix(&rev.diffopt);
 
-       if (default_attach) {
-               rev.mime_boundary = default_attach;
+       if (cfg.default_attach) {
+               rev.mime_boundary = cfg.default_attach;
                rev.no_inline = 1;
        }
 
@@ -2109,60 +2160,63 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 
        rev.force_in_body_from = force_in_body_from;
 
+       if (!fmt_patch_suffix)
+               fmt_patch_suffix = cfg.fmt_patch_suffix;
+
        /* Make sure "0000-$sub.patch" gives non-negative length for $sub */
-       if (cfg.fmt_patch_name_max <= strlen("0000-") + strlen(fmt_patch_suffix))
-               cfg.fmt_patch_name_max = strlen("0000-") + strlen(fmt_patch_suffix);
+       if (cfg.log.fmt_patch_name_max <= strlen("0000-") + strlen(fmt_patch_suffix))
+               cfg.log.fmt_patch_name_max = strlen("0000-") + strlen(fmt_patch_suffix);
 
        if (cover_from_description_arg)
-               cover_from_description_mode = parse_cover_from_description(cover_from_description_arg);
+               cfg.cover_from_description_mode = parse_cover_from_description(cover_from_description_arg);
 
        if (rfc && rfc[0]) {
-               subject_prefix = 1;
+               cfg.subject_prefix = 1;
                if (rfc[0] == '-')
-                       strbuf_addf(&sprefix, " %s", rfc + 1);
+                       strbuf_addf(&cfg.sprefix, " %s", rfc + 1);
                else
-                       strbuf_insertf(&sprefix, 0, "%s ", rfc);
+                       strbuf_insertf(&cfg.sprefix, 0, "%s ", rfc);
        }
 
        if (reroll_count) {
-               strbuf_addf(&sprefix, " v%s", reroll_count);
+               strbuf_addf(&cfg.sprefix, " v%s", reroll_count);
                rev.reroll_count = reroll_count;
        }
 
-       rev.subject_prefix = sprefix.buf;
+       rev.subject_prefix = cfg.sprefix.buf;
 
-       for (i = 0; i < extra_hdr.nr; i++) {
-               strbuf_addstr(&buf, extra_hdr.items[i].string);
+       for (i = 0; i < cfg.extra_hdr.nr; i++) {
+               strbuf_addstr(&buf, cfg.extra_hdr.items[i].string);
                strbuf_addch(&buf, '\n');
        }
 
-       if (extra_to.nr)
+       if (cfg.extra_to.nr)
                strbuf_addstr(&buf, "To: ");
-       for (i = 0; i < extra_to.nr; i++) {
+       for (i = 0; i < cfg.extra_to.nr; i++) {
                if (i)
                        strbuf_addstr(&buf, "    ");
-               strbuf_addstr(&buf, extra_to.items[i].string);
-               if (i + 1 < extra_to.nr)
+               strbuf_addstr(&buf, cfg.extra_to.items[i].string);
+               if (i + 1 < cfg.extra_to.nr)
                        strbuf_addch(&buf, ',');
                strbuf_addch(&buf, '\n');
        }
 
-       if (extra_cc.nr)
+       if (cfg.extra_cc.nr)
                strbuf_addstr(&buf, "Cc: ");
-       for (i = 0; i < extra_cc.nr; i++) {
+       for (i = 0; i < cfg.extra_cc.nr; i++) {
                if (i)
                        strbuf_addstr(&buf, "    ");
-               strbuf_addstr(&buf, extra_cc.items[i].string);
-               if (i + 1 < extra_cc.nr)
+               strbuf_addstr(&buf, cfg.extra_cc.items[i].string);
+               if (i + 1 < cfg.extra_cc.nr)
                        strbuf_addch(&buf, ',');
                strbuf_addch(&buf, '\n');
        }
 
        rev.extra_headers = to_free = strbuf_detach(&buf, NULL);
 
-       if (from) {
-               if (split_ident_line(&rev.from_ident, from, strlen(from)))
-                       die(_("invalid ident line: %s"), from);
+       if (cfg.from) {
+               if (split_ident_line(&rev.from_ident, cfg.from, strlen(cfg.from)))
+                       die(_("invalid ident line: %s"), cfg.from);
        }
 
        if (start_number < 0)
@@ -2173,14 +2227,14 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
         * and it would conflict with --keep-subject (-k) from the
         * command line, reset "numbered".
         */
-       if (numbered && keep_subject && !numbered_cmdline_opt)
-               numbered = 0;
+       if (cfg.numbered && cfg.keep_subject && !cfg.numbered_cmdline_opt)
+               cfg.numbered = 0;
 
-       if (numbered && keep_subject)
+       if (cfg.numbered && cfg.keep_subject)
                die(_("options '%s' and '%s' cannot be used together"), "-n", "-k");
-       if (keep_subject && subject_prefix)
+       if (cfg.keep_subject && cfg.subject_prefix)
                die(_("options '%s' and '%s' cannot be used together"), "--subject-prefix/--rfc", "-k");
-       rev.preserve_subject = keep_subject;
+       rev.preserve_subject = cfg.keep_subject;
 
        argc = setup_revisions(argc, argv, &rev, &s_r_opt);
        if (argc > 1)
@@ -2207,7 +2261,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        rev.always_show_header = 1;
 
        rev.zero_commit = zero_commit;
-       rev.patch_name_max = cfg.fmt_patch_name_max;
+       rev.patch_name_max = cfg.log.fmt_patch_name_max;
 
        if (!rev.diffopt.flags.text && !no_binary_diff)
                rev.diffopt.flags.binary = 1;
@@ -2228,7 +2282,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                int saved;
 
                if (!output_directory)
-                       output_directory = config_output_directory;
+                       output_directory = cfg.config_output_directory;
                output_directory = set_outdir(prefix, output_directory);
 
                if (rev.diffopt.use_color != GIT_COLOR_ALWAYS)
@@ -2326,14 +2380,14 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                goto done;
        total = nr;
        if (cover_letter == -1) {
-               if (config_cover_letter == COVER_AUTO)
+               if (cfg.config_cover_letter == COVER_AUTO)
                        cover_letter = (total > 1);
                else
-                       cover_letter = (config_cover_letter == COVER_ON);
+                       cover_letter = (cfg.config_cover_letter == COVER_ON);
        }
-       if (!keep_subject && auto_number && (total > 1 || cover_letter))
-               numbered = 1;
-       if (numbered)
+       if (!cfg.keep_subject && cfg.auto_number && (total > 1 || cover_letter))
+               cfg.numbered = 1;
+       if (cfg.numbered)
                rev.total = total + start_number - 1;
 
        if (idiff_prev.nr) {
@@ -2365,27 +2419,40 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                                             _("Range-diff against v%d:"));
        }
 
+       /*
+        * The order of precedence is:
+        *
+        *   1. The `--signature` and `--no-signature` options.
+        *   2. The `--signature-file` option.
+        *   3. The `format.signature` config.
+        *   4. The `format.signatureFile` config.
+        *   5. Default `git_version_string`.
+        */
        if (!signature) {
                ; /* --no-signature inhibits all signatures */
        } else if (signature && signature != git_version_string) {
                ; /* non-default signature already set */
-       } else if (signature_file) {
+       } else if (signature_file_arg || (cfg.signature_file && !cfg.signature)) {
                struct strbuf buf = STRBUF_INIT;
+               const char *signature_file = signature_file_arg ?
+                       signature_file_arg : cfg.signature_file;
 
                if (strbuf_read_file(&buf, signature_file, 128) < 0)
                        die_errno(_("unable to read signature file '%s'"), signature_file);
                signature = strbuf_detach(&buf, NULL);
+       } else if (cfg.signature) {
+               signature = cfg.signature;
        }
 
        memset(&bases, 0, sizeof(bases));
-       base = get_base_commit(base_commit, list, nr);
+       base = get_base_commit(&cfg, list, nr);
        if (base) {
                reset_revision_walk();
                clear_object_flags(UNINTERESTING);
                prepare_bases(&bases, base, list, nr);
        }
 
-       if (in_reply_to || thread || cover_letter) {
+       if (in_reply_to || cfg.thread || cover_letter) {
                rev.ref_message_ids = xmalloc(sizeof(*rev.ref_message_ids));
                string_list_init_dup(rev.ref_message_ids);
        }
@@ -2396,19 +2463,19 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        rev.numbered_files = just_numbers;
        rev.patch_suffix = fmt_patch_suffix;
        if (cover_letter) {
-               if (thread)
+               if (cfg.thread)
                        gen_message_id(&rev, "cover");
                make_cover_letter(&rev, !!output_directory,
-                                 origin, nr, list, description_file, branch_name, quiet);
+                                 origin, nr, list, description_file, branch_name, quiet, &cfg);
                print_bases(&bases, rev.diffopt.file);
-               print_signature(rev.diffopt.file);
+               print_signature(signature, rev.diffopt.file);
                total++;
                start_number--;
                /* interdiff/range-diff in cover-letter; omit from patches */
                rev.idiff_oid1 = NULL;
                rev.rdiff1 = NULL;
        }
-       rev.add_signoff = do_signoff;
+       rev.add_signoff = cfg.do_signoff;
 
        if (show_progress)
                progress = start_delayed_progress(_("Generating patches"), total);
@@ -2418,7 +2485,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                commit = list[nr];
                rev.nr = total - nr + (start_number - 1);
                /* Make the second and subsequent mails replies to the first */
-               if (thread) {
+               if (cfg.thread) {
                        /* Have we already had a message ID? */
                        if (rev.message_id) {
                                /*
@@ -2442,7 +2509,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                                 * letter is a reply to the
                                 * --in-reply-to, if specified.
                                 */
-                               if (thread == THREAD_SHALLOW
+                               if (cfg.thread == THREAD_SHALLOW
                                    && rev.ref_message_ids->nr > 0
                                    && (!cover_letter || rev.nr > 1))
                                        free(rev.message_id);
@@ -2475,7 +2542,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                                       mime_boundary_leader,
                                       rev.mime_boundary);
                        else
-                               print_signature(rev.diffopt.file);
+                               print_signature(signature, rev.diffopt.file);
                }
                if (output_directory)
                        fclose(rev.diffopt.file);
@@ -2483,9 +2550,6 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        stop_progress(&progress);
        free(list);
        free(branch_name);
-       string_list_clear(&extra_to, 0);
-       string_list_clear(&extra_cc, 0);
-       string_list_clear(&extra_hdr, 0);
        if (ignore_if_in_upstream)
                free_patch_ids(&ids);
 
@@ -2495,14 +2559,13 @@ done:
        strbuf_release(&rdiff1);
        strbuf_release(&rdiff2);
        strbuf_release(&rdiff_title);
-       strbuf_release(&sprefix);
        free(to_free);
        free(rev.message_id);
        if (rev.ref_message_ids)
                string_list_clear(rev.ref_message_ids, 0);
        free(rev.ref_message_ids);
        release_revisions(&rev);
-       log_config_release(&cfg);
+       format_config_release(&cfg);
        return 0;
 }