]> git.ipfire.org Git - thirdparty/git.git/blobdiff - builtin/log.c
Sync with maint
[thirdparty/git.git] / builtin / log.c
index d81a09051ead0bb14161c25ef30bf8b0348b3198..83a4a6188e221caefc5028e59cb7c95c2f1d1e0c 100644 (file)
@@ -4,9 +4,11 @@
  * (C) Copyright 2006 Linus Torvalds
  *              2006 Junio Hamano
  */
+#define USE_THE_INDEX_COMPATIBILITY_MACROS
 #include "cache.h"
 #include "config.h"
 #include "refs.h"
+#include "object-store.h"
 #include "color.h"
 #include "commit.h"
 #include "diff.h"
 #include "mailmap.h"
 #include "gpg-interface.h"
 #include "progress.h"
+#include "commit-slab.h"
+#include "repository.h"
+#include "commit-reach.h"
+#include "interdiff.h"
+#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;
@@ -38,7 +48,7 @@ static int default_follow;
 static int default_show_signature;
 static int decoration_style;
 static int decoration_given;
-static int use_mailmap_config;
+static int use_mailmap_config = 1;
 static const char *fmt_patch_subject_prefix = "PATCH";
 static const char *fmt_pretty;
 
@@ -54,9 +64,14 @@ struct line_opt_callback_data {
        struct string_list args;
 };
 
+static int session_is_interactive(void)
+{
+       return isatty(1) || pager_in_use();
+}
+
 static int auto_decoration_style(void)
 {
-       return (isatty(1) || pager_in_use()) ? DECORATE_SHORT_REFS : 0;
+       return session_is_interactive() ? DECORATE_SHORT_REFS : 0;
 }
 
 static int parse_decoration_style(const char *value)
@@ -75,6 +90,10 @@ static int parse_decoration_style(const char *value)
                return DECORATE_SHORT_REFS;
        else if (!strcmp(value, "auto"))
                return auto_decoration_style();
+       /*
+        * Please update _git_log() in git-completion.bash when you
+        * add new decoration styles.
+        */
        return -1;
 }
 
@@ -99,6 +118,8 @@ static int log_line_range_callback(const struct option *option, const char *arg,
 {
        struct line_opt_callback_data *data = option->value;
 
+       BUG_ON_OPT_NEG(unset);
+
        if (!arg)
                return -1;
 
@@ -110,7 +131,7 @@ static int log_line_range_callback(const struct option *option, const char *arg,
 
 static void init_log_defaults(void)
 {
-       init_grep_defaults();
+       init_grep_defaults(the_repository);
        init_diff_ui_defaults();
 
        decoration_style = auto_decoration_style();
@@ -121,33 +142,41 @@ static void cmd_log_init_defaults(struct rev_info *rev)
        if (fmt_pretty)
                get_commit_format(fmt_pretty, rev);
        if (default_follow)
-               DIFF_OPT_SET(&rev->diffopt, DEFAULT_FOLLOW_RENAMES);
+               rev->diffopt.flags.default_follow_renames = 1;
        rev->verbose_header = 1;
-       DIFF_OPT_SET(&rev->diffopt, RECURSIVE);
+       rev->diffopt.flags.recursive = 1;
        rev->diffopt.stat_width = -1; /* use full terminal width */
        rev->diffopt.stat_graph_width = -1; /* respect statGraphWidth config */
        rev->abbrev_commit = default_abbrev_commit;
        rev->show_root_diff = default_show_root;
        rev->subject_prefix = fmt_patch_subject_prefix;
        rev->show_signature = default_show_signature;
-       DIFF_OPT_SET(&rev->diffopt, ALLOW_TEXTCONV);
+       rev->diffopt.flags.allow_textconv = 1;
 
        if (default_date_mode)
                parse_date_format(default_date_mode, &rev->date_mode);
-       rev->diffopt.touched_flags = 0;
 }
 
 static void cmd_log_init_finish(int argc, const char **argv, const char *prefix,
                         struct rev_info *rev, struct setup_revision_opt *opt)
 {
        struct userformat_want w;
-       int quiet = 0, source = 0, mailmap = 0;
+       int quiet = 0, source = 0, mailmap;
        static struct line_opt_callback_data line_cb = {NULL, NULL, STRING_LIST_INIT_DUP};
+       static struct string_list decorate_refs_exclude = STRING_LIST_INIT_NODUP;
+       static struct string_list decorate_refs_include = STRING_LIST_INIT_NODUP;
+       struct decoration_filter decoration_filter = {&decorate_refs_include,
+                                                     &decorate_refs_exclude};
+       static struct revision_sources revision_sources;
 
        const struct option builtin_log_options[] = {
                OPT__QUIET(&quiet, N_("suppress diff output")),
                OPT_BOOL(0, "source", &source, N_("show source")),
                OPT_BOOL(0, "use-mailmap", &mailmap, N_("Use mail map file")),
+               OPT_STRING_LIST(0, "decorate-refs", &decorate_refs_include,
+                               N_("pattern"), N_("only decorate refs that match <pattern>")),
+               OPT_STRING_LIST(0, "decorate-refs-exclude", &decorate_refs_exclude,
+                               N_("pattern"), N_("do not decorate refs that match <pattern>")),
                { OPTION_CALLBACK, 0, "decorate", NULL, NULL, N_("decorate options"),
                  PARSE_OPT_OPTARG, decorate_callback},
                OPT_CALLBACK('L', NULL, &line_cb, "n,m:file",
@@ -179,14 +208,16 @@ static void cmd_log_init_finish(int argc, const char **argv, const char *prefix,
        if (!rev->show_notes_given && (!rev->pretty_given || w.notes))
                rev->show_notes = 1;
        if (rev->show_notes)
-               init_display_notes(&rev->notes_opt);
+               load_display_notes(&rev->notes_opt);
 
-       if (rev->diffopt.pickaxe || rev->diffopt.filter ||
-           DIFF_OPT_TST(&rev->diffopt, FOLLOW_RENAMES))
+       if ((rev->diffopt.pickaxe_opts & DIFF_PICKAXE_KINDS_MASK) ||
+           rev->diffopt.filter || rev->diffopt.flags.follow_renames)
                rev->always_show_header = 0;
 
-       if (source)
-               rev->show_source = 1;
+       if (source || w.source) {
+               init_revision_sources(&revision_sources);
+               rev->sources = &revision_sources;
+       }
 
        if (mailmap) {
                rev->mailmap = xcalloc(1, sizeof(struct string_list));
@@ -206,7 +237,7 @@ static void cmd_log_init_finish(int argc, const char **argv, const char *prefix,
 
        if (decoration_style) {
                rev->show_decorations = 1;
-               load_ref_decorations(decoration_style);
+               load_ref_decorations(&decoration_filter, decoration_style);
        }
 
        if (rev->line_level_traverse)
@@ -226,7 +257,7 @@ static void cmd_log_init(int argc, const char **argv, const char *prefix,
  * This gives a rough estimate for how many commits we
  * will print out in the list.
  */
-static int estimate_commit_count(struct rev_info *rev, struct commit_list *list)
+static int estimate_commit_count(struct commit_list *list)
 {
        int n = 0;
 
@@ -264,7 +295,7 @@ static void log_show_early(struct rev_info *revs, struct commit_list *list)
                switch (simplify_commit(revs, commit)) {
                case commit_show:
                        if (show_header) {
-                               int n = estimate_commit_count(revs, list);
+                               int n = estimate_commit_count(list);
                                show_early_header(revs, "incomplete", n);
                                show_header = 0;
                        }
@@ -308,7 +339,7 @@ static void early_output(int signal)
        show_early_output = log_show_early;
 }
 
-static void setup_early_output(struct rev_info *rev)
+static void setup_early_output(void)
 {
        struct sigaction sa;
 
@@ -339,7 +370,7 @@ static void setup_early_output(struct rev_info *rev)
 
 static void finish_early_output(struct rev_info *rev)
 {
-       int n = estimate_commit_count(rev, rev->commits);
+       int n = estimate_commit_count(rev->commits);
        signal(SIGALRM, SIG_IGN);
        show_early_header(rev, "done", n);
 }
@@ -351,7 +382,7 @@ static int cmd_log_walk(struct rev_info *rev)
        int saved_dcctc = 0, close_file = rev->diffopt.close_file;
 
        if (rev->early_output)
-               setup_early_output(rev);
+               setup_early_output();
 
        if (prepare_revision_walk(rev))
                die(_("revision walk setup failed"));
@@ -377,7 +408,8 @@ static int cmd_log_walk(struct rev_info *rev)
                         * We may show a given commit multiple times when
                         * walking the reflogs.
                         */
-                       free_commit_buffer(commit);
+                       free_commit_buffer(the_repository->parsed_objects,
+                                          commit);
                        free_commit_list(commit->parents);
                        commit->parents = NULL;
                }
@@ -392,7 +424,7 @@ static int cmd_log_walk(struct rev_info *rev)
                fclose(rev->diffopt.file);
 
        if (rev->diffopt.output_format & DIFF_FORMAT_CHECKDIFF &&
-           DIFF_OPT_TST(&rev->diffopt, CHECK_FAILED)) {
+           rev->diffopt.flags.check_failed) {
                return 02;
        }
        return diff_result_code(&rev->diffopt, 0);
@@ -452,7 +484,7 @@ int cmd_whatchanged(int argc, const char **argv, const char *prefix)
        init_log_defaults();
        git_config(git_log_config, NULL);
 
-       init_revisions(&rev, prefix);
+       repo_init_revisions(the_repository, &rev, prefix);
        rev.diff = 1;
        rev.simplify_history = 0;
        memset(&opt, 0, sizeof(opt));
@@ -464,7 +496,7 @@ int cmd_whatchanged(int argc, const char **argv, const char *prefix)
        return cmd_log_walk(&rev);
 }
 
-static void show_tagger(char *buf, int len, struct rev_info *rev)
+static void show_tagger(const char *buf, struct rev_info *rev)
 {
        struct strbuf out = STRBUF_INIT;
        struct pretty_print_context pp = {0};
@@ -484,15 +516,17 @@ static int show_blob_object(const struct object_id *oid, struct rev_info *rev, c
        unsigned long size;
 
        fflush(rev->diffopt.file);
-       if (!DIFF_OPT_TOUCHED(&rev->diffopt, ALLOW_TEXTCONV) ||
-           !DIFF_OPT_TST(&rev->diffopt, ALLOW_TEXTCONV))
+       if (!rev->diffopt.flags.textconv_set_via_cmdline ||
+           !rev->diffopt.flags.allow_textconv)
                return stream_blob_to_fd(1, oid, NULL, 0);
 
-       if (get_oid_with_context(obj_name, GET_OID_RECORD_PATH,
+       if (get_oid_with_context(the_repository, obj_name,
+                                GET_OID_RECORD_PATH,
                                 &oidc, &obj_context))
-               die(_("Not a valid object name %s"), obj_name);
+               die(_("not a valid object name %s"), obj_name);
        if (!obj_context.path ||
-           !textconv_object(obj_context.path, obj_context.mode, &oidc, 1, &buf, &size)) {
+           !textconv_object(the_repository, obj_context.path,
+                            obj_context.mode, &oidc, 1, &buf, &size)) {
                free(obj_context.path);
                return stream_blob_to_fd(1, oid, NULL, 0);
        }
@@ -509,20 +543,20 @@ static int show_tag_object(const struct object_id *oid, struct rev_info *rev)
 {
        unsigned long size;
        enum object_type type;
-       char *buf = read_sha1_file(oid->hash, &type, &size);
+       char *buf = read_object_file(oid, &type, &size);
        int offset = 0;
 
        if (!buf)
-               return error(_("Could not read object %s"), oid_to_hex(oid));
+               return error(_("could not read object %s"), oid_to_hex(oid));
 
        assert(type == OBJ_TAG);
        while (offset < size && buf[offset] != '\n') {
                int new_offset = offset + 1;
+               const char *ident;
                while (new_offset < size && buf[new_offset++] != '\n')
                        ; /* do nothing */
-               if (starts_with(buf + offset, "tagger "))
-                       show_tagger(buf + offset + 7,
-                                   new_offset - offset - 7, rev);
+               if (skip_prefix(buf + offset, "tagger ", &ident))
+                       show_tagger(ident, rev);
                offset = new_offset;
        }
 
@@ -532,7 +566,7 @@ static int show_tag_object(const struct object_id *oid, struct rev_info *rev)
        return 0;
 }
 
-static int show_tree_object(const unsigned char *sha1,
+static int show_tree_object(const struct object_id *oid,
                struct strbuf *base,
                const char *pathname, unsigned mode, int stage, void *context)
 {
@@ -569,7 +603,7 @@ int cmd_show(int argc, const char **argv, const char *prefix)
        git_config(git_log_config, NULL);
 
        memset(&match_all, 0, sizeof(match_all));
-       init_revisions(&rev, prefix);
+       repo_init_revisions(the_repository, &rev, prefix);
        rev.diff = 1;
        rev.always_show_header = 1;
        rev.no_walk = REVISION_WALK_NO_WALK_SORTED;
@@ -594,6 +628,7 @@ int cmd_show(int argc, const char **argv, const char *prefix)
                        break;
                case OBJ_TAG: {
                        struct tag *t = (struct tag *)o;
+                       struct object_id *oid = get_tagged_oid(t);
 
                        if (rev.shown_one)
                                putchar('\n');
@@ -605,10 +640,10 @@ int cmd_show(int argc, const char **argv, const char *prefix)
                        rev.shown_one = 1;
                        if (ret)
                                break;
-                       o = parse_object(&t->tagged->oid);
+                       o = parse_object(the_repository, oid);
                        if (!o)
-                               ret = error(_("Could not read object %s"),
-                                           oid_to_hex(&t->tagged->oid));
+                               ret = error(_("could not read object %s"),
+                                           oid_to_hex(oid));
                        objects[i].item = o;
                        i--;
                        break;
@@ -620,8 +655,9 @@ int cmd_show(int argc, const char **argv, const char *prefix)
                                        diff_get_color_opt(&rev.diffopt, DIFF_COMMIT),
                                        name,
                                        diff_get_color_opt(&rev.diffopt, DIFF_RESET));
-                       read_tree_recursive((struct tree *)o, "", 0, 0, &match_all,
-                                       show_tree_object, rev.diffopt.file);
+                       read_tree_recursive(the_repository, (struct tree *)o, "",
+                                           0, 0, &match_all, show_tree_object,
+                                           rev.diffopt.file);
                        rev.shown_one = 1;
                        break;
                case OBJ_COMMIT:
@@ -631,7 +667,7 @@ int cmd_show(int argc, const char **argv, const char *prefix)
                        ret = cmd_log_walk(&rev);
                        break;
                default:
-                       ret = error(_("Unknown type: %d"), o->type);
+                       ret = error(_("unknown type: %d"), o->type);
                }
        }
        free(objects);
@@ -649,7 +685,7 @@ int cmd_log_reflog(int argc, const char **argv, const char *prefix)
        init_log_defaults();
        git_config(git_log_config, NULL);
 
-       init_revisions(&rev, prefix);
+       repo_init_revisions(the_repository, &rev, prefix);
        init_reflog_walk(&rev.reflog_info);
        rev.verbose_header = 1;
        memset(&opt, 0, sizeof(opt));
@@ -667,9 +703,9 @@ int cmd_log_reflog(int argc, const char **argv, const char *prefix)
 static void log_setup_revisions_tweak(struct rev_info *rev,
                                      struct setup_revision_opt *opt)
 {
-       if (DIFF_OPT_TST(&rev->diffopt, DEFAULT_FOLLOW_RENAMES) &&
+       if (rev->diffopt.flags.default_follow_renames &&
            rev->prune_data.nr == 1)
-               DIFF_OPT_SET(&rev->diffopt, FOLLOW_RENAMES);
+               rev->diffopt.flags.follow_renames = 1;
 
        /* Turn --cc/-c into -p --cc/-c when -p was not given */
        if (!rev->diffopt.output_format && rev->combine_merges)
@@ -688,7 +724,7 @@ int cmd_log(int argc, const char **argv, const char *prefix)
        init_log_defaults();
        git_config(git_log_config, NULL);
 
-       init_revisions(&rev, prefix);
+       repo_init_revisions(the_repository, &rev, prefix);
        rev.always_show_header = 1;
        memset(&opt, 0, sizeof(opt));
        opt.def = "HEAD";
@@ -730,23 +766,53 @@ static void add_header(const char *value)
        item->string[len] = '\0';
 }
 
-#define THREAD_SHALLOW 1
-#define THREAD_DEEP 2
-static int thread;
+enum cover_setting {
+       COVER_UNSET,
+       COVER_OFF,
+       COVER_ON,
+       COVER_AUTO
+};
+
+enum thread_level {
+       THREAD_UNSET,
+       THREAD_SHALLOW,
+       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;
 static char *from;
 static const char *signature = git_version_string;
 static const char *signature_file;
-static int config_cover_letter;
+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;
 
-enum {
-       COVER_UNSET,
-       COVER_OFF,
-       COVER_ON,
-       COVER_AUTO
-};
+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)
 {
@@ -799,7 +865,7 @@ static int git_format_config(const char *var, const char *value, void *cb)
                        thread = THREAD_SHALLOW;
                        return 0;
                }
-               thread = git_config_bool(var, value) && THREAD_SHALLOW;
+               thread = git_config_bool(var, value) ? THREAD_SHALLOW : THREAD_UNSET;
                return 0;
        }
        if (!strcmp(var, "format.signoff")) {
@@ -835,6 +901,20 @@ static int git_format_config(const char *var, const char *value, void *cb)
                        from = NULL;
                return 0;
        }
+       if (!strcmp(var, "format.notes")) {
+               int b = git_parse_maybe_bool(value);
+               if (b < 0)
+                       enable_ref_display_notes(&notes_opt, &show_notes, value);
+               else if (b)
+                       enable_default_display_notes(&notes_opt, &show_notes);
+               else
+                       disable_display_notes(&notes_opt, &show_notes);
+               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);
 }
@@ -869,7 +949,7 @@ static int open_next_file(struct commit *commit, const char *subject,
                printf("%s\n", filename.buf + outdir_offset);
 
        if ((rev->diffopt.file = fopen(filename.buf, "w")) == NULL) {
-               error_errno(_("Cannot open patch file %s"), filename.buf);
+               error_errno(_("cannot open patch file %s"), filename.buf);
                strbuf_release(&filename);
                return -1;
        }
@@ -886,22 +966,22 @@ static void get_patch_ids(struct rev_info *rev, struct patch_ids *ids)
        unsigned flags1, flags2;
 
        if (rev->pending.nr != 2)
-               die(_("Need exactly one range."));
+               die(_("need exactly one range"));
 
        o1 = rev->pending.objects[0].item;
        o2 = rev->pending.objects[1].item;
        flags1 = o1->flags;
        flags2 = o2->flags;
-       c1 = lookup_commit_reference(&o1->oid);
-       c2 = lookup_commit_reference(&o2->oid);
+       c1 = lookup_commit_reference(the_repository, &o1->oid);
+       c2 = lookup_commit_reference(the_repository, &o2->oid);
 
        if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING))
-               die(_("Not a range."));
+               die(_("not a range"));
 
-       init_patch_ids(ids);
+       init_patch_ids(the_repository, ids);
 
        /* given a range a..b get all patch ids for b..a */
-       init_revisions(&check_rev, rev->prefix);
+       repo_init_revisions(the_repository, &check_rev, rev->prefix);
        check_rev.max_parents = 1;
        o1->flags ^= UNINTERESTING;
        o2->flags ^= UNINTERESTING;
@@ -941,20 +1021,6 @@ 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;
@@ -975,14 +1041,89 @@ static char *find_branch_name(struct rev_info *rev)
                return NULL;
        ref = rev->cmdline.rev[positive].name;
        tip_oid = &rev->cmdline.rev[positive].item->oid;
-       if (dwim_ref(ref, strlen(ref), branch_oid.hash, &full_ref) &&
+       if (dwim_ref(ref, strlen(ref), &branch_oid, &full_ref) &&
            skip_prefix(full_ref, "refs/heads/", &v) &&
-           !oidcmp(tip_oid, &branch_oid))
+           oideq(tip_oid, &branch_oid))
                branch = xstrdup(v);
        free(full_ref);
        return branch;
 }
 
+static void show_diffstat(struct rev_info *rev,
+                         struct commit *origin, struct commit *head)
+{
+       struct diff_options opts;
+
+       memcpy(&opts, &rev->diffopt, sizeof(opts));
+       opts.output_format = DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
+       diff_setup_done(&opts);
+
+       diff_tree_oid(get_commit_tree_oid(origin),
+                     get_commit_tree_oid(head),
+                     "", &opts);
+       diffcore_std(&opts);
+       diff_flush(&opts);
+
+       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 int get_notes_refs(struct string_list_item *item, void *arg)
+{
+       argv_array_pushf(arg, "--notes=%s", item->string);
+       return 0;
+}
+
+static void get_notes_args(struct argv_array *arg, struct rev_info *rev)
+{
+       if (!rev->show_notes) {
+               argv_array_push(arg, "--no-notes");
+       } else if (rev->notes_opt.use_default_notes > 0 ||
+                  (rev->notes_opt.use_default_notes == -1 &&
+                   !rev->notes_opt.extra_notes_refs.nr)) {
+               argv_array_push(arg, "--notes");
+       } else {
+               for_each_string_list(&rev->notes_opt.extra_notes_refs, get_notes_refs, arg);
+       }
+}
+
 static void make_cover_letter(struct rev_info *rev, int use_stdout,
                              struct commit *origin,
                              int nr, struct commit **list,
@@ -990,27 +1131,24 @@ 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;
        const char *encoding = "UTF-8";
-       struct diff_options opts;
        int need_8bit_cte = 0;
        struct pretty_print_context pp = {0};
        struct commit *head = list[0];
 
        if (!cmit_fmt_is_mail(rev->commit_format))
-               die(_("Cover letter needs email format"));
+               die(_("cover letter needs email format"));
 
        committer = git_committer_info(0);
 
        if (!use_stdout &&
            open_next_file(NULL, rev->numbered_files ? NULL : "cover-letter", rev, quiet))
-               return;
+               die(_("failed to create cover-letter file"));
 
-       log_write_email_headers(rev, head, &pp.after_subject, &need_8bit_cte);
+       log_write_email_headers(rev, head, &pp.after_subject, &need_8bit_cte, 0);
 
        for (i = 0; !need_8bit_cte && i < nr; i++) {
                const char *buf = get_commit_buffer(list[i], NULL);
@@ -1022,22 +1160,19 @@ 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);
 
        shortlog_init(&log);
        log.wrap_lines = 1;
-       log.wrap = 72;
+       log.wrap = MAIL_DEFAULT_WRAP;
        log.in1 = 2;
        log.in2 = 4;
        log.file = rev->diffopt.file;
@@ -1046,24 +1181,32 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
 
        shortlog_output(&log);
 
-       /*
-        * We can only do diffstat with a unique reference point
-        */
-       if (!origin)
-               return;
-
-       memcpy(&opts, &rev->diffopt, sizeof(opts));
-       opts.output_format = DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
+       /* We can only do diffstat with a unique reference point */
+       if (origin)
+               show_diffstat(rev, origin, head);
 
-       diff_setup_done(&opts);
-
-       diff_tree_oid(&origin->tree->object.oid,
-                     &head->tree->object.oid,
-                     "", &opts);
-       diffcore_std(&opts);
-       diff_flush(&opts);
+       if (rev->idiff_oid1) {
+               fprintf_ln(rev->diffopt.file, "%s", rev->idiff_title);
+               show_interdiff(rev, 0);
+       }
 
-       fprintf(rev->diffopt.file, "\n");
+       if (rev->rdiff1) {
+               /*
+                * Pass minimum required diff-options to range-diff; others
+                * can be added later if deemed desirable.
+                */
+               struct diff_options opts;
+               struct argv_array other_arg = ARGV_ARRAY_INIT;
+               diff_setup(&opts);
+               opts.file = rev->diffopt.file;
+               opts.use_color = rev->diffopt.use_color;
+               diff_setup_done(&opts);
+               fprintf_ln(rev->diffopt.file, "%s", rev->rdiff_title);
+               get_notes_args(&other_arg, rev);
+               show_range_diff(rev->rdiff1, rev->rdiff2,
+                               rev->creation_factor, 1, &opts, &other_arg);
+               argv_array_clear(&other_arg);
+       }
 }
 
 static const char *clean_message_id(const char *msg_id)
@@ -1117,6 +1260,8 @@ static int keep_subject = 0;
 
 static int keep_callback(const struct option *opt, const char *arg, int unset)
 {
+       BUG_ON_OPT_NEG(unset);
+       BUG_ON_OPT_ARG(arg);
        ((struct rev_info *)opt->value)->total = -1;
        keep_subject = 1;
        return 0;
@@ -1127,6 +1272,7 @@ static int subject_prefix = 0;
 static int subject_prefix_callback(const struct option *opt, const char *arg,
                            int unset)
 {
+       BUG_ON_OPT_NEG(unset);
        subject_prefix = 1;
        ((struct rev_info *)opt->value)->subject_prefix = arg;
        return 0;
@@ -1134,6 +1280,8 @@ static int subject_prefix_callback(const struct option *opt, const char *arg,
 
 static int rfc_callback(const struct option *opt, const char *arg, int unset)
 {
+       BUG_ON_OPT_NEG(unset);
+       BUG_ON_OPT_ARG(arg);
        return subject_prefix_callback(opt, "RFC PATCH", unset);
 }
 
@@ -1142,6 +1290,7 @@ static int numbered_cmdline_opt = 0;
 static int numbered_callback(const struct option *opt, const char *arg,
                             int unset)
 {
+       BUG_ON_OPT_ARG(arg);
        *(int *)opt->value = numbered_cmdline_opt = unset ? 0 : 1;
        if (unset)
                auto_number =  0;
@@ -1151,6 +1300,7 @@ static int numbered_callback(const struct option *opt, const char *arg,
 static int no_numbered_callback(const struct option *opt, const char *arg,
                                int unset)
 {
+       BUG_ON_OPT_NEG(unset);
        return numbered_callback(opt, arg, 1);
 }
 
@@ -1158,21 +1308,26 @@ static int output_directory_callback(const struct option *opt, const char *arg,
                              int unset)
 {
        const char **dir = (const char **)opt->value;
+       BUG_ON_OPT_NEG(unset);
        if (*dir)
-               die(_("Two output directories?"));
+               die(_("two output directories?"));
        *dir = arg;
        return 0;
 }
 
 static int thread_callback(const struct option *opt, const char *arg, int unset)
 {
-       int *thread = (int *)opt->value;
+       enum thread_level *thread = (enum thread_level *)opt->value;
        if (unset)
-               *thread = 0;
+               *thread = THREAD_UNSET;
        else if (!arg || !strcmp(arg, "shallow"))
                *thread = THREAD_SHALLOW;
        else if (!strcmp(arg, "deep"))
                *thread = THREAD_DEEP;
+       /*
+        * Please update _git_formatpatch() in git-completion.bash
+        * when you add new options.
+        */
        else
                return 1;
        return 0;
@@ -1211,7 +1366,7 @@ static int header_callback(const struct option *opt, const char *arg, int unset)
                string_list_clear(&extra_to, 0);
                string_list_clear(&extra_cc, 0);
        } else {
-           add_header(arg);
+               add_header(arg);
        }
        return 0;
 }
@@ -1266,8 +1421,8 @@ static struct commit *get_base_commit(const char *base_commit,
        if (base_commit && strcmp(base_commit, "auto")) {
                base = lookup_commit_reference_by_name(base_commit);
                if (!base)
-                       die(_("Unknown commit %s"), base_commit);
-       } else if ((base_commit && !strcmp(base_commit, "auto")) || base_auto) {
+                       die(_("unknown commit %s"), base_commit);
+       } else if ((base_commit && !strcmp(base_commit, "auto"))) {
                struct branch *curr_branch = branch_get(NULL);
                const char *upstream = branch_get_upstream(curr_branch, NULL);
                if (upstream) {
@@ -1276,18 +1431,18 @@ static struct commit *get_base_commit(const char *base_commit,
                        struct object_id oid;
 
                        if (get_oid(upstream, &oid))
-                               die(_("Failed to resolve '%s' as a valid ref."), upstream);
+                               die(_("failed to resolve '%s' as a valid ref"), upstream);
                        commit = lookup_commit_or_die(&oid, "upstream base");
                        base_list = get_merge_bases_many(commit, total, list);
                        /* There should be one and only one merge base. */
                        if (!base_list || base_list->next)
-                               die(_("Could not find exact merge base."));
+                               die(_("could not find exact merge base"));
                        base = base_list->item;
                        free_commit_list(base_list);
                } else {
-                       die(_("Failed to get upstream, if you want to record base commit automatically,\n"
+                       die(_("failed to get upstream, if you want to record base commit automatically,\n"
                              "please use git branch --set-upstream-to to track a remote branch.\n"
-                             "Or you could specify base commit by --base=<base-commit-id> manually."));
+                             "Or you could specify base commit by --base=<base-commit-id> manually"));
                }
        }
 
@@ -1305,7 +1460,7 @@ static struct commit *get_base_commit(const char *base_commit,
                        struct commit_list *merge_base;
                        merge_base = get_merge_bases(rev[2 * i], rev[2 * i + 1]);
                        if (!merge_base || merge_base->next)
-                               die(_("Failed to find exact merge base"));
+                               die(_("failed to find exact merge base"));
 
                        rev[i] = merge_base->item;
                }
@@ -1327,6 +1482,8 @@ static struct commit *get_base_commit(const char *base_commit,
        return base;
 }
 
+define_commit_slab(commit_base, int);
+
 static void prepare_bases(struct base_tree_info *bases,
                          struct commit *base,
                          struct commit **list,
@@ -1335,24 +1492,26 @@ static void prepare_bases(struct base_tree_info *bases,
        struct commit *commit;
        struct rev_info revs;
        struct diff_options diffopt;
+       struct commit_base commit_base;
        int i;
 
        if (!base)
                return;
 
-       diff_setup(&diffopt);
-       DIFF_OPT_SET(&diffopt, RECURSIVE);
+       init_commit_base(&commit_base);
+       repo_diff_setup(the_repository, &diffopt);
+       diffopt.flags.recursive = 1;
        diff_setup_done(&diffopt);
 
        oidcpy(&bases->base_commit, &base->object.oid);
 
-       init_revisions(&revs, NULL);
+       repo_init_revisions(the_repository, &revs, NULL);
        revs.max_parents = 1;
        revs.topo_order = 1;
        for (i = 0; i < total; i++) {
                list[i]->object.flags &= ~UNINTERESTING;
                add_pending_object(&revs, &list[i]->object, "rev_list");
-               list[i]->util = (void *)1;
+               *commit_base_at(&commit_base, list[i]) = 1;
        }
        base->object.flags |= UNINTERESTING;
        add_pending_object(&revs, &base->object, "base");
@@ -1366,15 +1525,16 @@ static void prepare_bases(struct base_tree_info *bases,
        while ((commit = get_revision(&revs)) != NULL) {
                struct object_id oid;
                struct object_id *patch_id;
-               if (commit->util)
+               if (*commit_base_at(&commit_base, commit))
                        continue;
-               if (commit_patch_id(commit, &diffopt, &oid, 0))
+               if (commit_patch_id(commit, &diffopt, &oid, 0, 1))
                        die(_("cannot get patch id"));
                ALLOC_GROW(bases->patch_id, bases->nr_patch_id + 1, bases->alloc_patch_id);
                patch_id = bases->patch_id + bases->nr_patch_id;
                oidcpy(patch_id, &oid);
                bases->nr_patch_id++;
        }
+       clear_commit_base(&commit_base);
 }
 
 static void print_bases(struct base_tree_info *bases, FILE *file)
@@ -1398,6 +1558,36 @@ static void print_bases(struct base_tree_info *bases, FILE *file)
        oidclr(&bases->base_commit);
 }
 
+static const char *diff_title(struct strbuf *sb, int reroll_count,
+                      const char *generic, const char *rerolled)
+{
+       if (reroll_count <= 0)
+               strbuf_addstr(sb, generic);
+       else /* RFC may be v0, so allow -v1 to diff against v0 */
+               strbuf_addf(sb, rerolled, reroll_count - 1);
+       return sb->buf;
+}
+
+static void infer_range_diff_ranges(struct strbuf *r1,
+                                   struct strbuf *r2,
+                                   const char *prev,
+                                   struct commit *origin,
+                                   struct commit *head)
+{
+       const char *head_oid = oid_to_hex(&head->object.oid);
+
+       if (!strstr(prev, "..")) {
+               strbuf_addf(r1, "%s..%s", head_oid, prev);
+               strbuf_addf(r2, "%s..%s", prev, head_oid);
+       } else if (!origin) {
+               die(_("failed to infer range-diff ranges"));
+       } else {
+               strbuf_addstr(r1, prev);
+               strbuf_addf(r2, "%s..%s",
+                           oid_to_hex(&origin->object.oid), head_oid);
+       }
+}
+
 int cmd_format_patch(int argc, const char **argv, const char *prefix)
 {
        struct commit *commit;
@@ -1420,11 +1610,19 @@ 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;
        int show_progress = 0;
        struct progress *progress = NULL;
+       struct oid_array idiff_prev = OID_ARRAY_INIT;
+       struct strbuf idiff_title = STRBUF_INIT;
+       const char *rdiff_prev = NULL;
+       struct strbuf rdiff1 = STRBUF_INIT;
+       struct strbuf rdiff2 = STRBUF_INIT;
+       struct strbuf rdiff_title = STRBUF_INIT;
+       int creation_factor = -1;
 
        const struct option builtin_format_patch_options[] = {
                { OPTION_CALLBACK, 'n', "numbered", &numbered, NULL,
@@ -1432,7 +1630,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                            PARSE_OPT_NOARG, numbered_callback },
                { OPTION_CALLBACK, 'N', "no-numbered", &numbered, NULL,
                            N_("use [PATCH] even with multiple patches"),
-                           PARSE_OPT_NOARG, no_numbered_callback },
+                           PARSE_OPT_NOARG | PARSE_OPT_NONEG, no_numbered_callback },
                OPT_BOOL('s', "signoff", &do_signoff, N_("add Signed-off-by:")),
                OPT_BOOL(0, "stdout", &use_stdout,
                            N_("print patches to standard out")),
@@ -1449,6 +1647,9 @@ 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 [<prefix>] instead of [PATCH]"),
                            PARSE_OPT_NONEG, subject_prefix_callback },
@@ -1464,9 +1665,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                         N_("output all-zero hash in From header")),
                OPT_BOOL(0, "ignore-if-in-upstream", &ignore_if_in_upstream,
                         N_("don't include a patch matching a commit upstream")),
-               { OPTION_SET_INT, 'p', "no-stat", &use_patch_format, NULL,
-                 N_("show patch format instead of default (patch + stat)"),
-                 PARSE_OPT_NONEG | PARSE_OPT_NOARG, NULL, 1},
+               OPT_SET_INT_F('p', "no-stat", &use_patch_format,
+                             N_("show patch format instead of default (patch + stat)"),
+                             1, PARSE_OPT_NONEG),
                OPT_GROUP(N_("Messaging")),
                { OPTION_CALLBACK, 0, "add-header", NULL, N_("header"),
                            N_("add email header"), 0, header_callback },
@@ -1498,6 +1699,13 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                OPT__QUIET(&quiet, N_("don't print the patch filenames")),
                OPT_BOOL(0, "progress", &show_progress,
                         N_("show progress while generating patches")),
+               OPT_CALLBACK(0, "interdiff", &idiff_prev, N_("rev"),
+                            N_("show changes against <rev> in cover letter or single patch"),
+                            parse_opt_object_name),
+               OPT_STRING(0, "range-diff", &rdiff_prev, N_("refspec"),
+                          N_("show changes against <refspec> in cover letter or single patch")),
+               OPT_INTEGER(0, "creation-factor", &creation_factor,
+                           N_("percentage by which creation is weighted")),
                OPT_END()
        };
 
@@ -1505,19 +1713,25 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        extra_to.strdup_strings = 1;
        extra_cc.strdup_strings = 1;
        init_log_defaults();
+       init_display_notes(&notes_opt);
        git_config(git_format_config, NULL);
-       init_revisions(&rev, prefix);
+       repo_init_revisions(the_repository, &rev, prefix);
+       rev.show_notes = show_notes;
+       memcpy(&rev.notes_opt, &notes_opt, sizeof(notes_opt));
        rev.commit_format = CMIT_FMT_EMAIL;
        rev.expand_tabs_in_log_default = 0;
        rev.verbose_header = 1;
        rev.diff = 1;
        rev.max_parents = 1;
-       DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
+       rev.diffopt.flags.recursive = 1;
        rev.subject_prefix = fmt_patch_subject_prefix;
        memset(&s_r_opt, 0, sizeof(s_r_opt));
        s_r_opt.def = "HEAD";
        s_r_opt.revarg_opt = REVARG_COMMITTISH;
 
+       if (base_auto)
+               base_commit = "auto";
+
        if (default_attach) {
                rev.mime_boundary = default_attach;
                rev.no_inline = 1;
@@ -1533,6 +1747,9 @@ 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",
@@ -1587,14 +1804,14 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                numbered = 0;
 
        if (numbered && keep_subject)
-               die (_("-n and -k are mutually exclusive."));
+               die(_("-n and -k are mutually exclusive"));
        if (keep_subject && subject_prefix)
-               die (_("--subject-prefix/--rfc and -k are mutually exclusive."));
+               die(_("--subject-prefix/--rfc and -k are mutually exclusive"));
        rev.preserve_subject = keep_subject;
 
        argc = setup_revisions(argc, argv, &rev, &s_r_opt);
        if (argc > 1)
-               die (_("unrecognized argument: %s"), argv[1]);
+               die(_("unrecognized argument: %s"), argv[1]);
 
        if (rev.diffopt.output_format & DIFF_FORMAT_NAME)
                die(_("--name-only does not make sense"));
@@ -1607,17 +1824,19 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                (!rev.diffopt.output_format ||
                 rev.diffopt.output_format == DIFF_FORMAT_PATCH))
                rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY;
+       if (!rev.diffopt.stat_width)
+               rev.diffopt.stat_width = MAIL_DEFAULT_WRAP;
 
        /* Always generate a patch */
        rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
 
        rev.zero_commit = zero_commit;
 
-       if (!DIFF_OPT_TST(&rev.diffopt, TEXT) && !no_binary_diff)
-               DIFF_OPT_SET(&rev.diffopt, BINARY);
+       if (!rev.diffopt.flags.text && !no_binary_diff)
+               rev.diffopt.flags.binary = 1;
 
        if (rev.show_notes)
-               init_display_notes(&rev.notes_opt);
+               load_display_notes(&rev.notes_opt);
 
        if (!output_directory && !use_stdout)
                output_directory = config_output_directory;
@@ -1628,12 +1847,28 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                setup_pager();
 
        if (output_directory) {
+               int saved;
                if (rev.diffopt.use_color != GIT_COLOR_ALWAYS)
                        rev.diffopt.use_color = GIT_COLOR_NEVER;
                if (use_stdout)
                        die(_("standard output, or directory, which one?"));
+               /*
+                * We consider <outdir> as 'outside of gitdir', therefore avoid
+                * applying adjust_shared_perm in s-c-l-d.
+                */
+               saved = get_shared_repository();
+               set_shared_repository(0);
+               switch (safe_create_leading_directories_const(output_directory)) {
+               case SCLD_OK:
+               case SCLD_EXISTS:
+                       break;
+               default:
+                       die(_("could not create leading directories "
+                             "of '%s'"), output_directory);
+               }
+               set_shared_repository(saved);
                if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
-                       die_errno(_("Could not create directory '%s'"),
+                       die_errno(_("could not create directory '%s'"),
                                  output_directory);
        }
 
@@ -1680,8 +1915,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                /* Don't say anything if head and upstream are the same. */
                if (rev.pending.nr == 2) {
                        struct object_array_entry *o = rev.pending.objects;
-                       if (oidcmp(&o[0].item->oid, &o[1].item->oid) == 0)
-                               return 0;
+                       if (oideq(&o[0].item->oid, &o[1].item->oid))
+                               goto done;
                }
                get_patch_ids(&rev, &ids);
        }
@@ -1705,7 +1940,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        }
        if (nr == 0)
                /* nothing to do */
-               return 0;
+               goto done;
        total = nr;
        if (cover_letter == -1) {
                if (config_cover_letter == COVER_AUTO)
@@ -1718,6 +1953,35 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        if (numbered)
                rev.total = total + start_number - 1;
 
+       if (idiff_prev.nr) {
+               if (!cover_letter && total != 1)
+                       die(_("--interdiff requires --cover-letter or single patch"));
+               rev.idiff_oid1 = &idiff_prev.oid[idiff_prev.nr - 1];
+               rev.idiff_oid2 = get_commit_tree_oid(list[0]);
+               rev.idiff_title = diff_title(&idiff_title, reroll_count,
+                                            _("Interdiff:"),
+                                            _("Interdiff against v%d:"));
+       }
+
+       if (creation_factor < 0)
+               creation_factor = RANGE_DIFF_CREATION_FACTOR_DEFAULT;
+       else if (!rdiff_prev)
+               die(_("--creation-factor requires --range-diff"));
+
+       if (rdiff_prev) {
+               if (!cover_letter && total != 1)
+                       die(_("--range-diff requires --cover-letter or single patch"));
+
+               infer_range_diff_ranges(&rdiff1, &rdiff2, rdiff_prev,
+                                       origin, list[0]);
+               rev.rdiff1 = rdiff1.buf;
+               rev.rdiff2 = rdiff2.buf;
+               rev.creation_factor = creation_factor;
+               rev.rdiff_title = diff_title(&rdiff_title, reroll_count,
+                                            _("Range-diff:"),
+                                            _("Range-diff against v%d:"));
+       }
+
        if (!signature) {
                ; /* --no-signature inhibits all signatures */
        } else if (signature && signature != git_version_string) {
@@ -1731,9 +1995,10 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        }
 
        memset(&bases, 0, sizeof(bases));
-       if (base_commit || base_auto) {
+       if (base_commit) {
                struct commit *base = get_base_commit(base_commit, list, nr);
                reset_revision_walk();
+               clear_object_flags(UNINTERESTING);
                prepare_bases(&bases, base, list, nr);
        }
 
@@ -1754,6 +2019,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                print_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;
 
@@ -1802,9 +2070,10 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 
                if (!use_stdout &&
                    open_next_file(rev.numbered_files ? NULL : commit, NULL, &rev, quiet))
-                       die(_("Failed to create output files"));
+                       die(_("failed to create output files"));
                shown = log_tree_commit(&rev, commit);
-               free_commit_buffer(commit);
+               free_commit_buffer(the_repository->parsed_objects,
+                                  commit);
 
                /* We put one extra blank line between formatted
                 * patches and this flag is used by log-tree code
@@ -1834,6 +2103,13 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        string_list_clear(&extra_hdr, 0);
        if (ignore_if_in_upstream)
                free_patch_ids(&ids);
+
+done:
+       oid_array_clear(&idiff_prev);
+       strbuf_release(&idiff_title);
+       strbuf_release(&rdiff1);
+       strbuf_release(&rdiff2);
+       strbuf_release(&rdiff_title);
        return 0;
 }
 
@@ -1841,7 +2117,8 @@ static int add_pending_commit(const char *arg, struct rev_info *revs, int flags)
 {
        struct object_id oid;
        if (get_oid(arg, &oid) == 0) {
-               struct commit *commit = lookup_commit_reference(&oid);
+               struct commit *commit = lookup_commit_reference(the_repository,
+                                                               &oid);
                if (commit) {
                        commit->object.flags |= flags;
                        add_pending_object(revs, &commit->object, arg);
@@ -1861,12 +2138,12 @@ static void print_commit(char sign, struct commit *commit, int verbose,
 {
        if (!verbose) {
                fprintf(file, "%c %s\n", sign,
-                      find_unique_abbrev(commit->object.oid.hash, abbrev));
+                      find_unique_abbrev(&commit->object.oid, abbrev));
        } else {
                struct strbuf buf = STRBUF_INIT;
                pp_commit_easy(CMIT_FMT_ONELINE, commit, &buf);
                fprintf(file, "%c %s %s\n", sign,
-                      find_unique_abbrev(commit->object.oid.hash, abbrev),
+                      find_unique_abbrev(&commit->object.oid, abbrev),
                       buf.buf);
                strbuf_release(&buf);
        }
@@ -1913,25 +2190,25 @@ int cmd_cherry(int argc, const char **argv, const char *prefix)
                }
        }
 
-       init_revisions(&revs, prefix);
+       repo_init_revisions(the_repository, &revs, prefix);
        revs.max_parents = 1;
 
        if (add_pending_commit(head, &revs, 0))
-               die(_("Unknown commit %s"), head);
+               die(_("unknown commit %s"), head);
        if (add_pending_commit(upstream, &revs, UNINTERESTING))
-               die(_("Unknown commit %s"), upstream);
+               die(_("unknown commit %s"), upstream);
 
        /* Don't say anything if head and upstream are the same. */
        if (revs.pending.nr == 2) {
                struct object_array_entry *o = revs.pending.objects;
-               if (oidcmp(&o[0].item->oid, &o[1].item->oid) == 0)
+               if (oideq(&o[0].item->oid, &o[1].item->oid))
                        return 0;
        }
 
        get_patch_ids(&revs, &ids);
 
        if (limit && add_pending_commit(limit, &revs, UNINTERESTING))
-               die(_("Unknown commit %s"), limit);
+               die(_("unknown commit %s"), limit);
 
        /* reverse the list of commits */
        if (prepare_revision_walk(&revs))