6 #include "string-list.h"
10 #include "reflog-walk.h"
12 static char *user_format;
14 static void save_user_format(struct rev_info *rev, const char *cp, int is_tformat)
17 user_format = xstrdup(cp);
19 rev->use_terminator = 1;
20 rev->commit_format = CMIT_FMT_USERFORMAT;
23 void get_commit_format(const char *arg, struct rev_info *rev)
26 static struct cmt_fmt_map {
31 { "raw", 1, CMIT_FMT_RAW },
32 { "medium", 1, CMIT_FMT_MEDIUM },
33 { "short", 1, CMIT_FMT_SHORT },
34 { "email", 1, CMIT_FMT_EMAIL },
35 { "full", 5, CMIT_FMT_FULL },
36 { "fuller", 5, CMIT_FMT_FULLER },
37 { "oneline", 1, CMIT_FMT_ONELINE },
40 rev->use_terminator = 0;
42 rev->commit_format = CMIT_FMT_DEFAULT;
45 if (!prefixcmp(arg, "format:") || !prefixcmp(arg, "tformat:")) {
46 save_user_format(rev, strchr(arg, ':') + 1, arg[0] == 't');
49 for (i = 0; i < ARRAY_SIZE(cmt_fmts); i++) {
50 if (!strncmp(arg, cmt_fmts[i].n, cmt_fmts[i].cmp_len) &&
51 !strncmp(arg, cmt_fmts[i].n, strlen(arg))) {
52 if (cmt_fmts[i].v == CMIT_FMT_ONELINE)
53 rev->use_terminator = 1;
54 rev->commit_format = cmt_fmts[i].v;
58 if (strchr(arg, '%')) {
59 save_user_format(rev, arg, 1);
63 die("invalid --pretty format: %s", arg);
67 * Generic support for pretty-printing the header
69 static int get_one_line(const char *msg)
84 /* High bit set, or ISO-2022-INT */
87 return !isascii(ch) || ch == '\033';
90 int has_non_ascii(const char *s)
95 while ((ch = *s++) != '\0') {
102 static int is_rfc2047_special(char ch)
104 return (non_ascii(ch) || (ch == '=') || (ch == '?') || (ch == '_'));
107 static void add_rfc2047(struct strbuf *sb, const char *line, int len,
108 const char *encoding)
112 for (i = 0; i < len; i++) {
116 if ((i + 1 < len) && (ch == '=' && line[i+1] == '?'))
119 strbuf_add(sb, line, len);
123 strbuf_grow(sb, len * 3 + strlen(encoding) + 100);
124 strbuf_addf(sb, "=?%s?q?", encoding);
125 for (i = last = 0; i < len; i++) {
126 unsigned ch = line[i] & 0xFF;
128 * We encode ' ' using '=20' even though rfc2047
129 * allows using '_' for readability. Unfortunately,
130 * many programs do not understand this and just
131 * leave the underscore in place.
133 if (is_rfc2047_special(ch) || ch == ' ') {
134 strbuf_add(sb, line + last, i - last);
135 strbuf_addf(sb, "=%02X", ch);
139 strbuf_add(sb, line + last, len - last);
140 strbuf_addstr(sb, "?=");
143 void pp_user_info(const char *what, enum cmit_fmt fmt, struct strbuf *sb,
144 const char *line, enum date_mode dmode,
145 const char *encoding)
152 if (fmt == CMIT_FMT_ONELINE)
154 date = strchr(line, '>');
157 namelen = ++date - line;
158 time = strtoul(date, &date, 10);
159 tz = strtol(date, NULL, 10);
161 if (fmt == CMIT_FMT_EMAIL) {
162 char *name_tail = strchr(line, '<');
163 int display_name_length;
166 while (line < name_tail && isspace(name_tail[-1]))
168 display_name_length = name_tail - line;
169 strbuf_addstr(sb, "From: ");
170 add_rfc2047(sb, line, display_name_length, encoding);
171 strbuf_add(sb, name_tail, namelen - display_name_length);
172 strbuf_addch(sb, '\n');
174 strbuf_addf(sb, "%s: %.*s%.*s\n", what,
175 (fmt == CMIT_FMT_FULLER) ? 4 : 0,
179 case CMIT_FMT_MEDIUM:
180 strbuf_addf(sb, "Date: %s\n", show_date(time, tz, dmode));
183 strbuf_addf(sb, "Date: %s\n", show_date(time, tz, DATE_RFC2822));
185 case CMIT_FMT_FULLER:
186 strbuf_addf(sb, "%sDate: %s\n", what, show_date(time, tz, dmode));
194 static int is_empty_line(const char *line, int *len_p)
197 while (len && isspace(line[len-1]))
203 static const char *skip_empty_lines(const char *msg)
206 int linelen = get_one_line(msg);
210 if (!is_empty_line(msg, &ll))
217 static void add_merge_info(enum cmit_fmt fmt, struct strbuf *sb,
218 const struct commit *commit, int abbrev)
220 struct commit_list *parent = commit->parents;
222 if ((fmt == CMIT_FMT_ONELINE) || (fmt == CMIT_FMT_EMAIL) ||
223 !parent || !parent->next)
226 strbuf_addstr(sb, "Merge:");
229 struct commit *p = parent->item;
230 const char *hex = NULL;
232 hex = find_unique_abbrev(p->object.sha1, abbrev);
234 hex = sha1_to_hex(p->object.sha1);
235 parent = parent->next;
237 strbuf_addf(sb, " %s", hex);
239 strbuf_addch(sb, '\n');
242 static char *get_header(const struct commit *commit, const char *key)
244 int key_len = strlen(key);
245 const char *line = commit->buffer;
248 const char *eol = strchr(line, '\n'), *next;
253 eol = line + strlen(line);
257 if (eol - line > key_len &&
258 !strncmp(line, key, key_len) &&
259 line[key_len] == ' ') {
260 return xmemdupz(line + key_len + 1, eol - line - key_len - 1);
266 static char *replace_encoding_header(char *buf, const char *encoding)
268 struct strbuf tmp = STRBUF_INIT;
272 /* guess if there is an encoding header before a \n\n */
273 while (strncmp(cp, "encoding ", strlen("encoding "))) {
274 cp = strchr(cp, '\n');
275 if (!cp || *++cp == '\n')
279 cp = strchr(cp, '\n');
281 return buf; /* should not happen but be defensive */
282 len = cp + 1 - (buf + start);
284 strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1);
285 if (is_encoding_utf8(encoding)) {
286 /* we have re-coded to UTF-8; drop the header */
287 strbuf_remove(&tmp, start, len);
289 /* just replaces XXXX in 'encoding XXXX\n' */
290 strbuf_splice(&tmp, start + strlen("encoding "),
291 len - strlen("encoding \n"),
292 encoding, strlen(encoding));
294 return strbuf_detach(&tmp, NULL);
297 static char *logmsg_reencode(const struct commit *commit,
298 const char *output_encoding)
300 static const char *utf8 = "UTF-8";
301 const char *use_encoding;
305 if (!*output_encoding)
307 encoding = get_header(commit, "encoding");
308 use_encoding = encoding ? encoding : utf8;
309 if (!strcmp(use_encoding, output_encoding))
310 if (encoding) /* we'll strip encoding header later */
311 out = xstrdup(commit->buffer);
313 return NULL; /* nothing to do */
315 out = reencode_string(commit->buffer,
316 output_encoding, use_encoding);
318 out = replace_encoding_header(out, output_encoding);
324 static int mailmap_name(char *email, int email_len, char *name, int name_len)
326 static struct string_list *mail_map;
328 mail_map = xcalloc(1, sizeof(*mail_map));
329 read_mailmap(mail_map, NULL);
331 return mail_map->nr && map_user(mail_map, email, email_len, name, name_len);
334 static size_t format_person_part(struct strbuf *sb, char part,
335 const char *msg, int len, enum date_mode dmode)
337 /* currently all placeholders have same length */
338 const int placeholder_len = 2;
339 int start, end, tz = 0;
340 unsigned long date = 0;
342 const char *name_start, *name_end, *mail_start, *mail_end, *msg_end = msg+len;
343 char person_name[1024];
344 char person_mail[1024];
346 /* advance 'end' to point to email start delimiter */
347 for (end = 0; end < len && msg[end] != '<'; end++)
351 * When end points at the '<' that we found, it should have
352 * matching '>' later, which means 'end' must be strictly
358 /* Seek for both name and email part */
361 while (name_end > name_start && isspace(*(name_end-1)))
363 mail_start = msg+end+1;
364 mail_end = mail_start;
365 while (mail_end < msg_end && *mail_end != '>')
367 if (mail_end == msg_end)
371 if (part == 'N' || part == 'E') { /* mailmap lookup */
372 strlcpy(person_name, name_start, name_end-name_start+1);
373 strlcpy(person_mail, mail_start, mail_end-mail_start+1);
374 mailmap_name(person_mail, sizeof(person_mail), person_name, sizeof(person_name));
375 name_start = person_name;
376 name_end = name_start + strlen(person_name);
377 mail_start = person_mail;
378 mail_end = mail_start + strlen(person_mail);
380 if (part == 'n' || part == 'N') { /* name */
381 strbuf_add(sb, name_start, name_end-name_start);
382 return placeholder_len;
384 if (part == 'e' || part == 'E') { /* email */
385 strbuf_add(sb, mail_start, mail_end-mail_start);
386 return placeholder_len;
389 /* advance 'start' to point to date start delimiter */
390 for (start = end + 1; start < len && isspace(msg[start]); start++)
394 date = strtoul(msg + start, &ep, 10);
395 if (msg + start == ep)
398 if (part == 't') { /* date, UNIX timestamp */
399 strbuf_add(sb, msg + start, ep - (msg + start));
400 return placeholder_len;
404 for (start = ep - msg + 1; start < len && isspace(msg[start]); start++)
406 if (start + 1 < len) {
407 tz = strtoul(msg + start + 1, NULL, 10);
408 if (msg[start] == '-')
414 strbuf_addstr(sb, show_date(date, tz, dmode));
415 return placeholder_len;
416 case 'D': /* date, RFC2822 style */
417 strbuf_addstr(sb, show_date(date, tz, DATE_RFC2822));
418 return placeholder_len;
419 case 'r': /* date, relative */
420 strbuf_addstr(sb, show_date(date, tz, DATE_RELATIVE));
421 return placeholder_len;
422 case 'i': /* date, ISO 8601 */
423 strbuf_addstr(sb, show_date(date, tz, DATE_ISO8601));
424 return placeholder_len;
429 * bogus commit, 'sb' cannot be updated, but we still need to
430 * compute a valid return value.
432 if (part == 'n' || part == 'e' || part == 't' || part == 'd'
433 || part == 'D' || part == 'r' || part == 'i')
434 return placeholder_len;
436 return 0; /* unknown placeholder */
444 struct format_commit_context {
445 const struct commit *commit;
446 const struct pretty_print_context *pretty_ctx;
447 unsigned commit_header_parsed:1;
448 unsigned commit_message_parsed:1;
450 /* These offsets are relative to the start of the commit message. */
452 struct chunk committer;
453 struct chunk encoding;
458 /* The following ones are relative to the result struct strbuf. */
459 struct chunk abbrev_commit_hash;
460 struct chunk abbrev_tree_hash;
461 struct chunk abbrev_parent_hashes;
464 static int add_again(struct strbuf *sb, struct chunk *chunk)
467 strbuf_adddup(sb, chunk->off, chunk->len);
472 * We haven't seen this chunk before. Our caller is surely
473 * going to add it the hard way now. Remember the most likely
474 * start of the to-be-added chunk: the current end of the
477 chunk->off = sb->len;
481 static void parse_commit_header(struct format_commit_context *context)
483 const char *msg = context->commit->buffer;
486 for (i = 0; msg[i]; i++) {
488 for (eol = i; msg[eol] && msg[eol] != '\n'; eol++)
493 } else if (!prefixcmp(msg + i, "author ")) {
494 context->author.off = i + 7;
495 context->author.len = eol - i - 7;
496 } else if (!prefixcmp(msg + i, "committer ")) {
497 context->committer.off = i + 10;
498 context->committer.len = eol - i - 10;
499 } else if (!prefixcmp(msg + i, "encoding ")) {
500 context->encoding.off = i + 9;
501 context->encoding.len = eol - i - 9;
505 context->message_off = i;
506 context->commit_header_parsed = 1;
509 static int istitlechar(char c)
511 return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
512 (c >= '0' && c <= '9') || c == '.' || c == '_';
515 static void format_sanitized_subject(struct strbuf *sb, const char *msg)
518 size_t start_len = sb->len;
521 for (; *msg && *msg != '\n'; msg++) {
522 if (istitlechar(*msg)) {
524 strbuf_addch(sb, '-');
526 strbuf_addch(sb, *msg);
528 while (*(msg+1) == '.')
534 /* trim any trailing '.' or '-' characters */
536 while (sb->len - trimlen > start_len &&
537 (sb->buf[sb->len - 1 - trimlen] == '.'
538 || sb->buf[sb->len - 1 - trimlen] == '-'))
540 strbuf_remove(sb, sb->len - trimlen, trimlen);
543 const char *format_subject(struct strbuf *sb, const char *msg,
544 const char *line_separator)
549 const char *line = msg;
550 int linelen = get_one_line(line);
553 if (!linelen || is_empty_line(line, &linelen))
558 strbuf_grow(sb, linelen + 2);
560 strbuf_addstr(sb, line_separator);
561 strbuf_add(sb, line, linelen);
567 static void parse_commit_message(struct format_commit_context *c)
569 const char *msg = c->commit->buffer + c->message_off;
570 const char *start = c->commit->buffer;
572 msg = skip_empty_lines(msg);
573 c->subject_off = msg - start;
575 msg = format_subject(NULL, msg, NULL);
576 msg = skip_empty_lines(msg);
577 c->body_off = msg - start;
579 c->commit_message_parsed = 1;
582 static void format_decoration(struct strbuf *sb, const struct commit *commit)
584 struct name_decoration *d;
585 const char *prefix = " (";
587 load_ref_decorations(DECORATE_SHORT_REFS);
588 d = lookup_decoration(&name_decoration, &commit->object);
590 strbuf_addstr(sb, prefix);
592 strbuf_addstr(sb, d->name);
595 if (prefix[0] == ',')
596 strbuf_addch(sb, ')');
599 static size_t format_commit_item(struct strbuf *sb, const char *placeholder,
602 struct format_commit_context *c = context;
603 const struct commit *commit = c->commit;
604 const char *msg = commit->buffer;
605 struct commit_list *p;
608 /* these are independent of the commit */
609 switch (placeholder[0]) {
611 if (placeholder[1] == '(') {
612 const char *end = strchr(placeholder + 2, ')');
613 char color[COLOR_MAXLEN];
616 color_parse_mem(placeholder + 2,
617 end - (placeholder + 2),
618 "--pretty format", color);
619 strbuf_addstr(sb, color);
620 return end - placeholder + 1;
622 if (!prefixcmp(placeholder + 1, "red")) {
623 strbuf_addstr(sb, GIT_COLOR_RED);
625 } else if (!prefixcmp(placeholder + 1, "green")) {
626 strbuf_addstr(sb, GIT_COLOR_GREEN);
628 } else if (!prefixcmp(placeholder + 1, "blue")) {
629 strbuf_addstr(sb, GIT_COLOR_BLUE);
631 } else if (!prefixcmp(placeholder + 1, "reset")) {
632 strbuf_addstr(sb, GIT_COLOR_RESET);
636 case 'n': /* newline */
637 strbuf_addch(sb, '\n');
640 /* %x00 == NUL, %x0a == LF, etc. */
641 if (0 <= (h1 = hexval_table[0xff & placeholder[1]]) &&
643 0 <= (h2 = hexval_table[0xff & placeholder[2]]) &&
645 strbuf_addch(sb, (h1<<4)|h2);
651 /* these depend on the commit */
652 if (!commit->object.parsed)
653 parse_object(commit->object.sha1);
655 switch (placeholder[0]) {
656 case 'H': /* commit hash */
657 strbuf_addstr(sb, sha1_to_hex(commit->object.sha1));
659 case 'h': /* abbreviated commit hash */
660 if (add_again(sb, &c->abbrev_commit_hash))
662 strbuf_addstr(sb, find_unique_abbrev(commit->object.sha1,
664 c->abbrev_commit_hash.len = sb->len - c->abbrev_commit_hash.off;
666 case 'T': /* tree hash */
667 strbuf_addstr(sb, sha1_to_hex(commit->tree->object.sha1));
669 case 't': /* abbreviated tree hash */
670 if (add_again(sb, &c->abbrev_tree_hash))
672 strbuf_addstr(sb, find_unique_abbrev(commit->tree->object.sha1,
674 c->abbrev_tree_hash.len = sb->len - c->abbrev_tree_hash.off;
676 case 'P': /* parent hashes */
677 for (p = commit->parents; p; p = p->next) {
678 if (p != commit->parents)
679 strbuf_addch(sb, ' ');
680 strbuf_addstr(sb, sha1_to_hex(p->item->object.sha1));
683 case 'p': /* abbreviated parent hashes */
684 if (add_again(sb, &c->abbrev_parent_hashes))
686 for (p = commit->parents; p; p = p->next) {
687 if (p != commit->parents)
688 strbuf_addch(sb, ' ');
689 strbuf_addstr(sb, find_unique_abbrev(
690 p->item->object.sha1, DEFAULT_ABBREV));
692 c->abbrev_parent_hashes.len = sb->len -
693 c->abbrev_parent_hashes.off;
695 case 'm': /* left/right/bottom */
696 strbuf_addch(sb, (commit->object.flags & BOUNDARY)
698 : (commit->object.flags & SYMMETRIC_LEFT)
703 format_decoration(sb, commit);
705 case 'g': /* reflog info */
706 switch(placeholder[1]) {
707 case 'd': /* reflog selector */
709 if (c->pretty_ctx->reflog_info)
710 get_reflog_selector(sb,
711 c->pretty_ctx->reflog_info,
712 c->pretty_ctx->date_mode,
713 (placeholder[1] == 'd'));
715 case 's': /* reflog message */
716 if (c->pretty_ctx->reflog_info)
717 get_reflog_message(sb, c->pretty_ctx->reflog_info);
720 return 0; /* unknown %g placeholder */
723 /* For the rest we have to parse the commit header. */
724 if (!c->commit_header_parsed)
725 parse_commit_header(c);
727 switch (placeholder[0]) {
728 case 'a': /* author ... */
729 return format_person_part(sb, placeholder[1],
730 msg + c->author.off, c->author.len,
731 c->pretty_ctx->date_mode);
732 case 'c': /* committer ... */
733 return format_person_part(sb, placeholder[1],
734 msg + c->committer.off, c->committer.len,
735 c->pretty_ctx->date_mode);
736 case 'e': /* encoding */
737 strbuf_add(sb, msg + c->encoding.off, c->encoding.len);
741 /* Now we need to parse the commit message. */
742 if (!c->commit_message_parsed)
743 parse_commit_message(c);
745 switch (placeholder[0]) {
746 case 's': /* subject */
747 format_subject(sb, msg + c->subject_off, " ");
749 case 'f': /* sanitized subject */
750 format_sanitized_subject(sb, msg + c->subject_off);
753 strbuf_addstr(sb, msg + c->body_off);
756 return 0; /* unknown placeholder */
759 void format_commit_message(const struct commit *commit,
760 const char *format, struct strbuf *sb,
761 const struct pretty_print_context *pretty_ctx)
763 struct format_commit_context context;
765 memset(&context, 0, sizeof(context));
766 context.commit = commit;
767 context.pretty_ctx = pretty_ctx;
768 strbuf_expand(sb, format, format_commit_item, &context);
771 static void pp_header(enum cmit_fmt fmt,
773 enum date_mode dmode,
774 const char *encoding,
775 const struct commit *commit,
779 int parents_shown = 0;
782 const char *line = *msg_p;
783 int linelen = get_one_line(*msg_p);
793 if (fmt == CMIT_FMT_RAW) {
794 strbuf_add(sb, line, linelen);
798 if (!memcmp(line, "parent ", 7)) {
800 die("bad parent line in commit");
804 if (!parents_shown) {
805 struct commit_list *parent;
807 for (parent = commit->parents, num = 0;
809 parent = parent->next, num++)
811 /* with enough slop */
812 strbuf_grow(sb, num * 50 + 20);
813 add_merge_info(fmt, sb, commit, abbrev);
818 * MEDIUM == DEFAULT shows only author with dates.
819 * FULL shows both authors but not dates.
820 * FULLER shows both authors and dates.
822 if (!memcmp(line, "author ", 7)) {
823 strbuf_grow(sb, linelen + 80);
824 pp_user_info("Author", fmt, sb, line + 7, dmode, encoding);
826 if (!memcmp(line, "committer ", 10) &&
827 (fmt == CMIT_FMT_FULL || fmt == CMIT_FMT_FULLER)) {
828 strbuf_grow(sb, linelen + 80);
829 pp_user_info("Commit", fmt, sb, line + 10, dmode, encoding);
834 void pp_title_line(enum cmit_fmt fmt,
838 const char *after_subject,
839 const char *encoding,
842 const char *line_separator = (fmt == CMIT_FMT_EMAIL) ? "\n " : " ";
845 strbuf_init(&title, 80);
846 *msg_p = format_subject(&title, *msg_p, line_separator);
848 strbuf_grow(sb, title.len + 1024);
850 strbuf_addstr(sb, subject);
851 add_rfc2047(sb, title.buf, title.len, encoding);
853 strbuf_addbuf(sb, &title);
855 strbuf_addch(sb, '\n');
857 if (need_8bit_cte > 0) {
858 const char *header_fmt =
859 "MIME-Version: 1.0\n"
860 "Content-Type: text/plain; charset=%s\n"
861 "Content-Transfer-Encoding: 8bit\n";
862 strbuf_addf(sb, header_fmt, encoding);
865 strbuf_addstr(sb, after_subject);
867 if (fmt == CMIT_FMT_EMAIL) {
868 strbuf_addch(sb, '\n');
870 strbuf_release(&title);
873 void pp_remainder(enum cmit_fmt fmt,
880 const char *line = *msg_p;
881 int linelen = get_one_line(line);
887 if (is_empty_line(line, &linelen)) {
890 if (fmt == CMIT_FMT_SHORT)
895 strbuf_grow(sb, linelen + indent + 20);
897 memset(sb->buf + sb->len, ' ', indent);
898 strbuf_setlen(sb, sb->len + indent);
900 strbuf_add(sb, line, linelen);
901 strbuf_addch(sb, '\n');
905 char *reencode_commit_message(const struct commit *commit, const char **encoding_p)
907 const char *encoding;
909 encoding = (git_log_output_encoding
910 ? git_log_output_encoding
911 : git_commit_encoding);
915 *encoding_p = encoding;
916 return logmsg_reencode(commit, encoding);
919 void pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit,
921 const struct pretty_print_context *context)
923 unsigned long beginning_of_body;
925 const char *msg = commit->buffer;
927 const char *encoding;
928 int need_8bit_cte = context->need_8bit_cte;
930 if (fmt == CMIT_FMT_USERFORMAT) {
931 format_commit_message(commit, user_format, sb, context);
935 reencoded = reencode_commit_message(commit, &encoding);
940 if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
944 * We need to check and emit Content-type: to mark it
945 * as 8-bit if we haven't done so.
947 if (fmt == CMIT_FMT_EMAIL && need_8bit_cte == 0) {
950 for (in_body = i = 0; (ch = msg[i]); i++) {
952 /* author could be non 7-bit ASCII but
953 * the log may be so; skip over the
956 if (ch == '\n' && msg[i+1] == '\n')
959 else if (non_ascii(ch)) {
966 pp_header(fmt, context->abbrev, context->date_mode, encoding,
968 if (fmt != CMIT_FMT_ONELINE && !context->subject) {
969 strbuf_addch(sb, '\n');
972 /* Skip excess blank lines at the beginning of body, if any... */
973 msg = skip_empty_lines(msg);
975 /* These formats treat the title line specially. */
976 if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
977 pp_title_line(fmt, &msg, sb, context->subject,
978 context->after_subject, encoding, need_8bit_cte);
980 beginning_of_body = sb->len;
981 if (fmt != CMIT_FMT_ONELINE)
982 pp_remainder(fmt, &msg, sb, indent);
985 /* Make sure there is an EOLN for the non-oneline case */
986 if (fmt != CMIT_FMT_ONELINE)
987 strbuf_addch(sb, '\n');
990 * The caller may append additional body text in e-mail
991 * format. Make sure we did not strip the blank line
992 * between the header and the body.
994 if (fmt == CMIT_FMT_EMAIL && sb->len <= beginning_of_body)
995 strbuf_addch(sb, '\n');