Merge branch 'ei/oneline+add-empty'

* ei/oneline+add-empty:
  Fix ALLOC_GROW calls with obsolete semantics
  Fix ALLOC_GROW off-by-one
  builtin-add: simplify (and increase accuracy of) exclude handling
  dir_struct: add collect_ignored option
  Extend --pretty=oneline to cover the first paragraph,
  Lift 16kB limit of log message output

builtin-add.c

@@ -40,42 +40,29 @@ static void prune_directory(struct dir_struct *dir, const char **pathspec, int p
 	dir->nr = dst - dir->entries;
 
 	for (i = 0; i < specs; i++) {
-		struct stat st;
+		if (!seen[i] && !file_exists(pathspec[i]))
-		const char *match;
+			die("pathspec '%s' did not match any files",
-		if (seen[i])
+					pathspec[i]);
-			continue;
-
-		match = pathspec[i];
-		if (!match[0])
-			continue;
-
-		/* Existing file? We must have ignored it */
-		if (!lstat(match, &st)) {
-			struct dir_entry *ent;
-
-			ent = dir_add_name(dir, match, strlen(match));
-			ent->ignored = 1;
-			if (S_ISDIR(st.st_mode))
-				ent->ignored_dir = 1;
-			continue;
-		}
-		die("pathspec '%s' did not match any files", match);
 	}
 }
 
-static void fill_directory(struct dir_struct *dir, const char **pathspec)
+static void fill_directory(struct dir_struct *dir, const char **pathspec,
+		int ignored_too)
 {
 	const char *path, *base;
 	int baselen;
 
 	/* Set up the default git porcelain excludes */
 	memset(dir, 0, sizeof(*dir));
-	dir->exclude_per_dir = ".gitignore";
+	if (!ignored_too) {
-	path = git_path("info/exclude");
+		dir->collect_ignored = 1;
-	if (!access(path, R_OK))
+		dir->exclude_per_dir = ".gitignore";
-		add_excludes_from_file(dir, path);
+		path = git_path("info/exclude");
-	if (!access(excludes_file, R_OK))
+		if (!access(path, R_OK))
-		add_excludes_from_file(dir, excludes_file);
+			add_excludes_from_file(dir, path);
+		if (!access(excludes_file, R_OK))
+			add_excludes_from_file(dir, excludes_file);
+	}
 
 	/*
 	 * Calculate common prefix for the pathspec, and
@@ -219,13 +206,11 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 	}
 	pathspec = get_pathspec(prefix, argv + i);
 
-	fill_directory(&dir, pathspec);
+	fill_directory(&dir, pathspec, ignored_too);
 
 	if (show_only) {
 		const char *sep = "", *eof = "";
 		for (i = 0; i < dir.nr; i++) {
-			if (!ignored_too && dir.entries[i]->ignored)
-				continue;
 			printf("%s%s", sep, dir.entries[i]->name);
 			sep = " ";
 			eof = "\n";
@@ -237,25 +222,13 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 	if (read_cache() < 0)
 		die("index file corrupt");
 
-	if (!ignored_too) {
+	if (dir.ignored_nr) {
-		int has_ignored = 0;
+		fprintf(stderr, ignore_warning);
-		for (i = 0; i < dir.nr; i++)
+		for (i = 0; i < dir.ignored_nr; i++) {
-			if (dir.entries[i]->ignored)
+			fprintf(stderr, "%s\n", dir.ignored[i]->name);
-				has_ignored = 1;
-		if (has_ignored) {
-			fprintf(stderr, ignore_warning);
-			for (i = 0; i < dir.nr; i++) {
-				if (!dir.entries[i]->ignored)
-					continue;
-				fprintf(stderr, "%s", dir.entries[i]->name);
-				if (dir.entries[i]->ignored_dir)
-					fprintf(stderr, " (directory)");
-				fputc('\n', stderr);
-			}
-			fprintf(stderr,
-				"Use -f if you really want to add them.\n");
-			exit(1);
 		}
+		fprintf(stderr, "Use -f if you really want to add them.\n");
+		exit(1);
 	}
 
 	for (i = 0; i < dir.nr; i++)

builtin-branch.c

@@ -247,7 +247,6 @@ static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
 	char c;
 	int color;
 	struct commit *commit;
-	char subject[256];
 
 	switch (item->kind) {
 	case REF_LOCAL_BRANCH:
@@ -268,17 +267,23 @@ static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
 	}
 
 	if (verbose) {
+		char *subject = NULL;
+		unsigned long subject_len = 0;
+		const char *sub = " **** invalid ref ****";
+
 		commit = lookup_commit(item->sha1);
-		if (commit && !parse_commit(commit))
+		if (commit && !parse_commit(commit)) {
 			pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0,
-					    subject, sizeof(subject), 0,
+					    &subject, &subject_len, 0,
 					    NULL, NULL, 0);
-		else
+			sub = subject;
-			strcpy(subject, " **** invalid ref ****");
+		}
 		printf("%c %s%-*s%s %s %s\n", c, branch_get_color(color),
 		       maxwidth, item->name,
 		       branch_get_color(COLOR_BRANCH_RESET),
-		       find_unique_abbrev(item->sha1, abbrev), subject);
+		       find_unique_abbrev(item->sha1, abbrev), sub);
+		if (subject)
+			free(subject);
 	} else {
 		printf("%c %s%s%s\n", c, branch_get_color(color), item->name,
 		       branch_get_color(COLOR_BRANCH_RESET));

builtin-log.c

@@ -742,11 +742,13 @@ int cmd_cherry(int argc, const char **argv, const char *prefix)
 			sign = '-';
 
 		if (verbose) {
-			static char buf[16384];
+			char *buf = NULL;
+			unsigned long buflen = 0;
 			pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0,
-			                    buf, sizeof(buf), 0, NULL, NULL, 0);
+			                    &buf, &buflen, 0, NULL, NULL, 0);
 			printf("%c %s %s\n", sign,
 			       sha1_to_hex(commit->object.sha1), buf);
+			free(buf);
 		}
 		else {
 			printf("%c %s\n", sign,

builtin-rev-list.c

@@ -92,11 +92,13 @@ static void show_commit(struct commit *commit)
 		putchar('\n');
 
 	if (revs.verbose_header) {
-		static char pretty_header[16384];
+		char *buf = NULL;
+		unsigned long buflen = 0;
 		pretty_print_commit(revs.commit_format, commit, ~0,
-				    pretty_header, sizeof(pretty_header),
+				    &buf, &buflen,
 				    revs.abbrev, NULL, NULL, revs.date_mode);
-		printf("%s%c", pretty_header, hdr_termination);
+		printf("%s%c", buf, hdr_termination);
+		free(buf);
 	}
 	fflush(stdout);
 	if (commit->parents) {

builtin-show-branch.c

@@ -259,17 +259,19 @@ static void join_revs(struct commit_list **list_p,
 
 static void show_one_commit(struct commit *commit, int no_name)
 {
-	char pretty[256], *cp;
+	char *pretty = NULL;
+	const char *pretty_str = "(unavailable)";
+	unsigned long pretty_len = 0;
 	struct commit_name *name = commit->util;
-	if (commit->object.parsed)
+
+	if (commit->object.parsed) {
 		pretty_print_commit(CMIT_FMT_ONELINE, commit, ~0,
-				    pretty, sizeof(pretty), 0, NULL, NULL, 0);
+				    &pretty, &pretty_len,
-	else
+				    0, NULL, NULL, 0);
-		strcpy(pretty, "(unavailable)");
+		pretty_str = pretty;
-	if (!prefixcmp(pretty, "[PATCH] "))
+	}
-		cp = pretty + 8;
+	if (!prefixcmp(pretty_str, "[PATCH] "))
-	else
+		pretty_str += 8;
-		cp = pretty;
 
 	if (!no_name) {
 		if (name && name->head_name) {
@@ -286,7 +288,8 @@ static void show_one_commit(struct commit *commit, int no_name)
 			printf("[%s] ",
 			       find_unique_abbrev(commit->object.sha1, 7));
 	}
-	puts(cp);
+	puts(pretty_str);
+	free(pretty);
 }
 
 static char *ref_name[MAX_REVS + 1];

cache.h

@@ -234,8 +234,11 @@ extern void verify_non_filename(const char *prefix, const char *name);
  */
 #define ALLOC_GROW(x, nr, alloc) \
 	do { \
-		if ((nr) >= alloc) { \
+		if ((nr) > alloc) { \
-			alloc = alloc_nr(alloc); \
+			if (alloc_nr(alloc) < (nr)) \
+				alloc = (nr); \
+			else \
+				alloc = alloc_nr(alloc); \
 			x = xrealloc((x), alloc * sizeof(*(x))); \
 		} \
 	} while(0)

commit.c

@@ -529,6 +529,14 @@ static int add_rfc2047(char *buf, const char *line, int len,
 	return bp - buf;
 }
 
+static unsigned long bound_rfc2047(unsigned long len, const char *encoding)
+{
+	/* upper bound of q encoded string of length 'len' */
+	unsigned long elen = strlen(encoding);
+
+	return len * 3 + elen + 100;
+}
+
 static int add_user_info(const char *what, enum cmit_fmt fmt, char *buf,
 			 const char *line, enum date_mode dmode,
 			 const char *encoding)
@@ -776,7 +784,7 @@ static void fill_person(struct interp *table, const char *msg, int len)
 }
 
 static long format_commit_message(const struct commit *commit,
-		const char *msg, char *buf, unsigned long space)
+		const char *msg, char **buf_p, unsigned long *space_p)
 {
 	struct interp table[] = {
 		{ "%H" },	/* commit hash */
@@ -905,31 +913,252 @@ static long format_commit_message(const struct commit *commit,
 		if (!table[i].value)
 			interp_set_entry(table, i, "<unknown>");
 
-	interpolate(buf, space, user_format, table, ARRAY_SIZE(table));
+	do {
+		char *buf = *buf_p;
+		unsigned long space = *space_p;
+
+		space = interpolate(buf, space, user_format,
+				    table, ARRAY_SIZE(table));
+		if (!space)
+			break;
+		buf = xrealloc(buf, space);
+		*buf_p = buf;
+		*space_p = space;
+	} while (1);
 	interp_clear_table(table, ARRAY_SIZE(table));
 
-	return strlen(buf);
+	return strlen(*buf_p);
+}
+
+static void pp_header(enum cmit_fmt fmt,
+		      int abbrev,
+		      enum date_mode dmode,
+		      const char *encoding,
+		      const struct commit *commit,
+		      const char **msg_p,
+		      unsigned long *len_p,
+		      unsigned long *ofs_p,
+		      char **buf_p,
+		      unsigned long *space_p)
+{
+	int parents_shown = 0;
+
+	for (;;) {
+		const char *line = *msg_p;
+		char *dst;
+		int linelen = get_one_line(*msg_p, *len_p);
+		unsigned long len;
+
+		if (!linelen)
+			return;
+		*msg_p += linelen;
+		*len_p -= linelen;
+
+		if (linelen == 1)
+			/* End of header */
+			return;
+
+		ALLOC_GROW(*buf_p, linelen + *ofs_p + 20, *space_p);
+		dst = *buf_p + *ofs_p;
+
+		if (fmt == CMIT_FMT_RAW) {
+			memcpy(dst, line, linelen);
+			*ofs_p += linelen;
+			continue;
+		}
+
+		if (!memcmp(line, "parent ", 7)) {
+			if (linelen != 48)
+				die("bad parent line in commit");
+			continue;
+		}
+
+		if (!parents_shown) {
+			struct commit_list *parent;
+			int num;
+			for (parent = commit->parents, num = 0;
+			     parent;
+			     parent = parent->next, num++)
+				;
+			/* with enough slop */
+			num = *ofs_p + num * 50 + 20;
+			ALLOC_GROW(*buf_p, num, *space_p);
+			dst = *buf_p + *ofs_p;
+			*ofs_p += add_merge_info(fmt, dst, commit, abbrev);
+			parents_shown = 1;
+		}
+
+		/*
+		 * MEDIUM == DEFAULT shows only author with dates.
+		 * FULL shows both authors but not dates.
+		 * FULLER shows both authors and dates.
+		 */
+		if (!memcmp(line, "author ", 7)) {
+			len = linelen;
+			if (fmt == CMIT_FMT_EMAIL)
+				len = bound_rfc2047(linelen, encoding);
+			ALLOC_GROW(*buf_p, *ofs_p + len, *space_p);
+			dst = *buf_p + *ofs_p;
+			*ofs_p += add_user_info("Author", fmt, dst,
+						line + 7, dmode, encoding);
+		}
+
+		if (!memcmp(line, "committer ", 10) &&
+		    (fmt == CMIT_FMT_FULL || fmt == CMIT_FMT_FULLER)) {
+			len = linelen;
+			if (fmt == CMIT_FMT_EMAIL)
+				len = bound_rfc2047(linelen, encoding);
+			ALLOC_GROW(*buf_p, *ofs_p + len, *space_p);
+			dst = *buf_p + *ofs_p;
+			*ofs_p += add_user_info("Commit", fmt, dst,
+						line + 10, dmode, encoding);
+		}
+	}
+}
+
+static void pp_title_line(enum cmit_fmt fmt,
+			  const char **msg_p,
+			  unsigned long *len_p,
+			  unsigned long *ofs_p,
+			  char **buf_p,
+			  unsigned long *space_p,
+			  int indent,
+			  const char *subject,
+			  const char *after_subject,
+			  const char *encoding,
+			  int plain_non_ascii)
+{
+	char *title;
+	unsigned long title_alloc, title_len;
+	unsigned long len;
+
+	title_len = 0;
+	title_alloc = 80;
+	title = xmalloc(title_alloc);
+	for (;;) {
+		const char *line = *msg_p;
+		int linelen = get_one_line(line, *len_p);
+		*msg_p += linelen;
+		*len_p -= linelen;
+
+		if (!linelen || is_empty_line(line, &linelen))
+			break;
+
+		if (title_alloc <= title_len + linelen + 2) {
+			title_alloc = title_len + linelen + 80;
+			title = xrealloc(title, title_alloc);
+		}
+		len = 0;
+		if (title_len) {
+			if (fmt == CMIT_FMT_EMAIL) {
+				len++;
+				title[title_len++] = '\n';
+			}
+			len++;
+			title[title_len++] = ' ';
+		}
+		memcpy(title + title_len, line, linelen);
+		title_len += linelen;
+	}
+
+	/* Enough slop for the MIME header and rfc2047 */
+	len = bound_rfc2047(title_len, encoding)+ 1000;
+	if (subject)
+		len += strlen(subject);
+	if (after_subject)
+		len += strlen(after_subject);
+	if (encoding)
+		len += strlen(encoding);
+	ALLOC_GROW(*buf_p, title_len + *ofs_p + len, *space_p);
+
+	if (subject) {
+		len = strlen(subject);
+		memcpy(*buf_p + *ofs_p, subject, len);
+		*ofs_p += len;
+		*ofs_p += add_rfc2047(*buf_p + *ofs_p,
+				      title, title_len, encoding);
+	} else {
+		memcpy(*buf_p + *ofs_p, title, title_len);
+		*ofs_p += title_len;
+	}
+	(*buf_p)[(*ofs_p)++] = '\n';
+	if (plain_non_ascii) {
+		const char *header_fmt =
+			"MIME-Version: 1.0\n"
+			"Content-Type: text/plain; charset=%s\n"
+			"Content-Transfer-Encoding: 8bit\n";
+		*ofs_p += snprintf(*buf_p + *ofs_p,
+				   *space_p - *ofs_p,
+				   header_fmt, encoding);
+	}
+	if (after_subject) {
+		len = strlen(after_subject);
+		memcpy(*buf_p + *ofs_p, after_subject, len);
+		*ofs_p += len;
+	}
+	free(title);
+	if (fmt == CMIT_FMT_EMAIL) {
+		ALLOC_GROW(*buf_p, *ofs_p + 20, *space_p);
+		(*buf_p)[(*ofs_p)++] = '\n';
+	}
+}
+
+static void pp_remainder(enum cmit_fmt fmt,
+			 const char **msg_p,
+			 unsigned long *len_p,
+			 unsigned long *ofs_p,
+			 char **buf_p,
+			 unsigned long *space_p,
+			 int indent)
+{
+	int first = 1;
+	for (;;) {
+		const char *line = *msg_p;
+		int linelen = get_one_line(line, *len_p);
+		*msg_p += linelen;
+		*len_p -= linelen;
+
+		if (!linelen)
+			break;
+
+		if (is_empty_line(line, &linelen)) {
+			if (first)
+				continue;
+			if (fmt == CMIT_FMT_SHORT)
+				break;
+		}
+		first = 0;
+
+		ALLOC_GROW(*buf_p, *ofs_p + linelen + indent + 20, *space_p);
+		if (indent) {
+			memset(*buf_p + *ofs_p, ' ', indent);
+			*ofs_p += indent;
+		}
+		memcpy(*buf_p + *ofs_p, line, linelen);
+		*ofs_p += linelen;
+		(*buf_p)[(*ofs_p)++] = '\n';
+	}
 }
 
 unsigned long pretty_print_commit(enum cmit_fmt fmt,
 				  const struct commit *commit,
 				  unsigned long len,
-				  char *buf, unsigned long space,
+				  char **buf_p, unsigned long *space_p,
 				  int abbrev, const char *subject,
 				  const char *after_subject,
 				  enum date_mode dmode)
 {
-	int hdr = 1, body = 0, seen_title = 0;
 	unsigned long offset = 0;
+	unsigned long beginning_of_body;
 	int indent = 4;
-	int parents_shown = 0;
 	const char *msg = commit->buffer;
 	int plain_non_ascii = 0;
 	char *reencoded;
 	const char *encoding;
+	char *buf;
 
 	if (fmt == CMIT_FMT_USERFORMAT)
-		return format_commit_message(commit, msg, buf, space);
+		return format_commit_message(commit, msg, buf_p, space_p);
 
 	encoding = (git_log_output_encoding
 		    ? git_log_output_encoding
@@ -937,8 +1166,10 @@ unsigned long pretty_print_commit(enum cmit_fmt fmt,
 	if (!encoding)
 		encoding = "utf-8";
 	reencoded = logmsg_reencode(commit, encoding);
-	if (reencoded)
+	if (reencoded) {
 		msg = reencoded;
+		len = strlen(reencoded);
+	}
 
 	if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
 		indent = 0;
@@ -969,137 +1200,57 @@ unsigned long pretty_print_commit(enum cmit_fmt fmt,
 		}
 	}
 
-	for (;;) {
+	pp_header(fmt, abbrev, dmode, encoding,
-		const char *line = msg;
+		  commit, &msg, &len,
-		int linelen = get_one_line(msg, len);
+		  &offset, buf_p, space_p);
+	if (fmt != CMIT_FMT_ONELINE && !subject) {
+		ALLOC_GROW(*buf_p, offset + 20, *space_p);
+		(*buf_p)[offset++] = '\n';
+	}
 
+	/* Skip excess blank lines at the beginning of body, if any... */
+	for (;;) {
+		int linelen = get_one_line(msg, len);
+		int ll = linelen;
 		if (!linelen)
 			break;
-
+		if (!is_empty_line(msg, &ll))
-		/*
-		 * We want some slop for indentation and a possible
-		 * final "...". Thus the "+ 20".
-		 */
-		if (offset + linelen + 20 > space) {
-			memcpy(buf + offset, "    ...\n", 8);
-			offset += 8;
 			break;
-		}
-
 		msg += linelen;
 		len -= linelen;
-		if (hdr) {
-			if (linelen == 1) {
-				hdr = 0;
-				if ((fmt != CMIT_FMT_ONELINE) && !subject)
-					buf[offset++] = '\n';
-				continue;
-			}
-			if (fmt == CMIT_FMT_RAW) {
-				memcpy(buf + offset, line, linelen);
-				offset += linelen;
-				continue;
-			}
-			if (!memcmp(line, "parent ", 7)) {
-				if (linelen != 48)
-					die("bad parent line in commit");
-				continue;
-			}
-
-			if (!parents_shown) {
-				offset += add_merge_info(fmt, buf + offset,
-							 commit, abbrev);
-				parents_shown = 1;
-				continue;
-			}
-			/*
-			 * MEDIUM == DEFAULT shows only author with dates.
-			 * FULL shows both authors but not dates.
-			 * FULLER shows both authors and dates.
-			 */
-			if (!memcmp(line, "author ", 7))
-				offset += add_user_info("Author", fmt,
-							buf + offset,
-							line + 7,
-							dmode,
-							encoding);
-			if (!memcmp(line, "committer ", 10) &&
-			    (fmt == CMIT_FMT_FULL || fmt == CMIT_FMT_FULLER))
-				offset += add_user_info("Commit", fmt,
-							buf + offset,
-							line + 10,
-							dmode,
-							encoding);
-			continue;
-		}
-
-		if (!subject)
-			body = 1;
-
-		if (is_empty_line(line, &linelen)) {
-			if (!seen_title)
-				continue;
-			if (!body)
-				continue;
-			if (subject)
-				continue;
-			if (fmt == CMIT_FMT_SHORT)
-				break;
-		}
-
-		seen_title = 1;
-		if (subject) {
-			int slen = strlen(subject);
-			memcpy(buf + offset, subject, slen);
-			offset += slen;
-			offset += add_rfc2047(buf + offset, line, linelen,
-					      encoding);
-		}
-		else {
-			memset(buf + offset, ' ', indent);
-			memcpy(buf + offset + indent, line, linelen);
-			offset += linelen + indent;
-		}
-		buf[offset++] = '\n';
-		if (fmt == CMIT_FMT_ONELINE)
-			break;
-		if (subject && plain_non_ascii) {
-			int sz;
-			char header[512];
-			const char *header_fmt =
-				"MIME-Version: 1.0\n"
-				"Content-Type: text/plain; charset=%s\n"
-				"Content-Transfer-Encoding: 8bit\n";
-			sz = snprintf(header, sizeof(header), header_fmt,
-				      encoding);
-			if (sizeof(header) < sz)
-				die("Encoding name %s too long", encoding);
-			memcpy(buf + offset, header, sz);
-			offset += sz;
-		}
-		if (after_subject) {
-			int slen = strlen(after_subject);
-			if (slen > space - offset - 1)
-				slen = space - offset - 1;
-			memcpy(buf + offset, after_subject, slen);
-			offset += slen;
-			after_subject = NULL;
-		}
-		subject = NULL;
 	}
-	while (offset && isspace(buf[offset-1]))
+
+	/* These formats treat the title line specially. */
+	if (fmt == CMIT_FMT_ONELINE
+	    || fmt == CMIT_FMT_EMAIL)
+		pp_title_line(fmt, &msg, &len, &offset,
+			      buf_p, space_p, indent,
+			      subject, after_subject, encoding,
+			      plain_non_ascii);
+
+	beginning_of_body = offset;
+	if (fmt != CMIT_FMT_ONELINE)
+		pp_remainder(fmt, &msg, &len, &offset,
+			     buf_p, space_p, indent);
+
+	while (offset && isspace((*buf_p)[offset-1]))
 		offset--;
+
+	ALLOC_GROW(*buf_p, offset + 20, *space_p);
+	buf = *buf_p;
+
 	/* Make sure there is an EOLN for the non-oneline case */
 	if (fmt != CMIT_FMT_ONELINE)
 		buf[offset++] = '\n';
+
 	/*
-	 * make sure there is another EOLN to separate the headers from whatever
+	 * The caller may append additional body text in e-mail
-	 * body the caller appends if we haven't already written a body
+	 * format.  Make sure we did not strip the blank line
+	 * between the header and the body.
 	 */
-	if (fmt == CMIT_FMT_EMAIL && !body)
+	if (fmt == CMIT_FMT_EMAIL && offset <= beginning_of_body)
 		buf[offset++] = '\n';
 	buf[offset] = '\0';
-
 	free(reencoded);
 	return offset;
 }

commit.h

@@ -61,7 +61,7 @@ enum cmit_fmt {
 };
 
 extern enum cmit_fmt get_commit_format(const char *arg);
-extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *, unsigned long len, char *buf, unsigned long space, int abbrev, const char *subject, const char *after_subject, enum date_mode dmode);
+extern unsigned long pretty_print_commit(enum cmit_fmt fmt, const struct commit *, unsigned long len, char **buf_p, unsigned long *space_p, int abbrev, const char *subject, const char *after_subject, enum date_mode dmode);
 
 /** Removes the first commit from a list sorted by date, and adds all
  * of its parents.

dir.c

@@ -275,7 +275,6 @@ static struct dir_entry *dir_entry_new(const char *pathname, int len) {
 	struct dir_entry *ent;
 
 	ent = xmalloc(sizeof(*ent) + len + 1);
-	ent->ignored = ent->ignored_dir = 0;
 	ent->len = len;
 	memcpy(ent->name, pathname, len);
 	ent->name[len] = 0;
@@ -287,10 +286,19 @@ struct dir_entry *dir_add_name(struct dir_struct *dir, const char *pathname, int
 	if (cache_name_pos(pathname, len) >= 0)
 		return NULL;
 
-	ALLOC_GROW(dir->entries, dir->nr, dir->alloc);
+	ALLOC_GROW(dir->entries, dir->nr+1, dir->alloc);
 	return dir->entries[dir->nr++] = dir_entry_new(pathname, len);
 }
 
+struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len)
+{
+	if (cache_name_pos(pathname, len) >= 0)
+		return NULL;
+
+	ALLOC_GROW(dir->ignored, dir->ignored_nr+1, dir->ignored_alloc);
+	return dir->ignored[dir->ignored_nr++] = dir_entry_new(pathname, len);
+}
+
 enum exist_status {
 	index_nonexistent = 0,
 	index_directory,
@@ -423,6 +431,18 @@ static int simplify_away(const char *path, int pathlen, const struct path_simpli
 	return 0;
 }
 
+static int in_pathspec(const char *path, int len, const struct path_simplify *simplify)
+{
+	if (simplify) {
+		for (; simplify->path; simplify++) {
+			if (len == simplify->len
+			    && !memcmp(path, simplify->path, len))
+				return 1;
+		}
+	}
+	return 0;
+}
+
 /*
  * Read a directory tree. We currently ignore anything but
  * directories, regular files and symlinks. That's because git
@@ -463,6 +483,9 @@ static int read_directory_recursive(struct dir_struct *dir, const char *path, co
 				continue;
 
 			exclude = excluded(dir, fullname);
+			if (exclude && dir->collect_ignored
+			    && in_pathspec(fullname, baselen + len, simplify))
+				dir_add_ignored(dir, fullname, baselen + len);
 			if (exclude != dir->show_ignored) {
 				if (!dir->show_ignored || DTYPE(de) != DT_DIR) {
 					continue;
@@ -609,6 +632,7 @@ int read_directory(struct dir_struct *dir, const char *path, const char *base, i
 	read_directory_recursive(dir, path, base, baselen, 0, simplify);
 	free_simplify(simplify);
 	qsort(dir->entries, dir->nr, sizeof(struct dir_entry *), cmp_name);
+	qsort(dir->ignored, dir->ignored_nr, sizeof(struct dir_entry *), cmp_name);
 	return dir->nr;
 }
 

dir.h

@@ -13,9 +13,7 @@
 
 
 struct dir_entry {
-	unsigned int ignored : 1;
+	unsigned int len;
-	unsigned int ignored_dir : 1;
-	unsigned int len : 30;
 	char name[FLEX_ARRAY]; /* more */
 };
 
@@ -31,11 +29,14 @@ struct exclude_list {
 
 struct dir_struct {
 	int nr, alloc;
+	int ignored_nr, ignored_alloc;
 	unsigned int show_ignored:1,
 		     show_other_directories:1,
 		     hide_empty_directories:1,
-		     no_gitlinks:1;
+		     no_gitlinks:1,
+		     collect_ignored:1;
 	struct dir_entry **entries;
+	struct dir_entry **ignored;
 
 	/* Exclude info */
 	const char *exclude_per_dir;

interpolate.c

@@ -44,33 +44,33 @@ void interp_clear_table(struct interp *table, int ninterps)
  *        { "%%", "%"},
  *    }
  *
- * Returns 1 on a successful substitution pass that fits in result,
+ * Returns 0 on a successful substitution pass that fits in result,
- * Returns 0 on a failed or overflowing substitution pass.
+ * Returns a number of bytes needed to hold the full substituted
+ * string otherwise.
  */
 
-int interpolate(char *result, int reslen,
+unsigned long interpolate(char *result, unsigned long reslen,
 		const char *orig,
 		const struct interp *interps, int ninterps)
 {
 	const char *src = orig;
 	char *dest = result;
-	int newlen = 0;
+	unsigned long newlen = 0;
 	const char *name, *value;
-	int namelen, valuelen;
+	unsigned long namelen, valuelen;
 	int i;
 	char c;
 
         memset(result, 0, reslen);
 
-	while ((c = *src) && newlen < reslen - 1) {
+	while ((c = *src)) {
 		if (c == '%') {
 			/* Try to match an interpolation string. */
 			for (i = 0; i < ninterps; i++) {
 				name = interps[i].name;
 				namelen = strlen(name);
-				if (strncmp(src, name, namelen) == 0) {
+				if (strncmp(src, name, namelen) == 0)
 					break;
-				}
 			}
 
 			/* Check for valid interpolation. */
@@ -78,29 +78,25 @@ int interpolate(char *result, int reslen,
 				value = interps[i].value;
 				valuelen = strlen(value);
 
-				if (newlen + valuelen < reslen - 1) {
+				if (newlen + valuelen + 1 < reslen) {
 					/* Substitute. */
 					strncpy(dest, value, valuelen);
-					newlen += valuelen;
 					dest += valuelen;
-					src += namelen;
-				} else {
-					/* Something's not fitting. */
-					return 0;
 				}
-
+				newlen += valuelen;
-			} else {
+				src += namelen;
-				/* Skip bogus interpolation. */
+				continue;
-				*dest++ = *src++;
-				newlen++;
 			}
-
-		} else {
-			/* Straight copy one non-interpolation character. */
-			*dest++ = *src++;
-			newlen++;
 		}
+		/* Straight copy one non-interpolation character. */
+		if (newlen + 1 < reslen)
+			*dest++ = *src;
+		src++;
+		newlen++;
 	}
 
-	return newlen < reslen - 1;
+	if (newlen + 1 < reslen)
+		return 0;
+	else
+		return newlen + 2;
 }

interpolate.h

@@ -19,8 +19,8 @@ struct interp {
 extern void interp_set_entry(struct interp *table, int slot, const char *value);
 extern void interp_clear_table(struct interp *table, int ninterps);
 
-extern int interpolate(char *result, int reslen,
+extern unsigned long interpolate(char *result, unsigned long reslen,
-		       const char *orig,
+				 const char *orig,
-		       const struct interp *interps, int ninterps);
+				 const struct interp *interps, int ninterps);
 
 #endif /* INTERPOLATE_H */

log-tree.c

@@ -79,16 +79,25 @@ static int detect_any_signoff(char *letter, int size)
 	return seen_head && seen_name;
 }
 
-static int append_signoff(char *buf, int buf_sz, int at, const char *signoff)
+static unsigned long append_signoff(char **buf_p, unsigned long *buf_sz_p,
+				    unsigned long at, const char *signoff)
 {
 	static const char signed_off_by[] = "Signed-off-by: ";
-	int signoff_len = strlen(signoff);
+	size_t signoff_len = strlen(signoff);
 	int has_signoff = 0;
-	char *cp = buf;
+	char *cp;
+	char *buf;
+	unsigned long buf_sz;
 
-	/* Do we have enough space to add it? */
+	buf = *buf_p;
-	if (buf_sz - at <= strlen(signed_off_by) + signoff_len + 3)
+	buf_sz = *buf_sz_p;
-		return at;
+	if (buf_sz <= at + strlen(signed_off_by) + signoff_len + 3) {
+		buf_sz += strlen(signed_off_by) + signoff_len + 3;
+		buf = xrealloc(buf, buf_sz);
+		*buf_p = buf;
+		*buf_sz_p = buf_sz;
+	}
+	cp = buf;
 
 	/* First see if we already have the sign-off by the signer */
 	while ((cp = strstr(cp, signed_off_by))) {
@@ -133,7 +142,8 @@ static unsigned int digits_in_number(unsigned int number)
 
 void show_log(struct rev_info *opt, const char *sep)
 {
-	static char this_header[16384];
+	char *msgbuf = NULL;
+	unsigned long msgbuf_len = 0;
 	struct log_info *log = opt->loginfo;
 	struct commit *commit = log->commit, *parent = log->parent;
 	int abbrev = opt->diffopt.abbrev;
@@ -278,14 +288,15 @@ void show_log(struct rev_info *opt, const char *sep)
 	/*
 	 * And then the pretty-printed message itself
 	 */
-	len = pretty_print_commit(opt->commit_format, commit, ~0u, this_header,
+	len = pretty_print_commit(opt->commit_format, commit, ~0u,
-				  sizeof(this_header), abbrev, subject,
+				  &msgbuf, &msgbuf_len, abbrev, subject,
 				  extra_headers, opt->date_mode);
 
 	if (opt->add_signoff)
-		len = append_signoff(this_header, sizeof(this_header), len,
+		len = append_signoff(&msgbuf, &msgbuf_len, len,
 				     opt->add_signoff);
-	printf("%s%s%s", this_header, extra, sep);
+	printf("%s%s%s", msgbuf, extra, sep);
+	free(msgbuf);
 }
 
 int log_tree_diff_flush(struct rev_info *opt)