1 files changed, 55 insertions, 1 deletions

diff --git a/strbuf.c b/strbuf.c
index 33018d847f..88cafd4a70 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -204,6 +204,13 @@ void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len)
 	strbuf_setlen(sb, sb->len + len);
 }
 
+void strbuf_addchars(struct strbuf *sb, int c, size_t n)
+{
+	strbuf_grow(sb, n);
+	memset(sb->buf + sb->len, c, n);
+	strbuf_setlen(sb, sb->len + n);
+}
+
 void strbuf_addf(struct strbuf *sb, const char *fmt, ...)
 {
 	va_list ap;
@@ -222,7 +229,8 @@ static void add_lines(struct strbuf *out,
 		const char *next = memchr(buf, '\n', size);
 		next = next ? (next + 1) : (buf + size);
 
-		prefix = (prefix2 && buf[0] == '\n') ? prefix2 : prefix1;
+		prefix = ((prefix2 && (buf[0] == '\n' || buf[0] == '\t'))
+			  ? prefix2 : prefix1);
 		strbuf_addstr(out, prefix);
 		strbuf_add(out, buf, next - buf);
 		size -= next - buf;
@@ -406,6 +414,27 @@ int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint)
 	return -1;
 }
 
+int strbuf_getcwd(struct strbuf *sb)
+{
+	size_t oldalloc = sb->alloc;
+	size_t guessed_len = 128;
+
+	for (;; guessed_len *= 2) {
+		strbuf_grow(sb, guessed_len);
+		if (getcwd(sb->buf, sb->alloc)) {
+			strbuf_setlen(sb, strlen(sb->buf));
+			return 0;
+		}
+		if (errno != ERANGE)
+			break;
+	}
+	if (oldalloc == 0)
+		strbuf_release(sb);
+	else
+		strbuf_reset(sb);
+	return -1;
+}
+
 int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term)
 {
 	int ch;
@@ -555,6 +584,31 @@ void strbuf_humanise_bytes(struct strbuf *buf, off_t bytes)
 	}
 }
 
+void strbuf_add_absolute_path(struct strbuf *sb, const char *path)
+{
+	if (!*path)
+		die("The empty string is not a valid path");
+	if (!is_absolute_path(path)) {
+		struct stat cwd_stat, pwd_stat;
+		size_t orig_len = sb->len;
+		char *cwd = xgetcwd();
+		char *pwd = getenv("PWD");
+		if (pwd && strcmp(pwd, cwd) &&
+		    !stat(cwd, &cwd_stat) &&
+		    (cwd_stat.st_dev || cwd_stat.st_ino) &&
+		    !stat(pwd, &pwd_stat) &&
+		    pwd_stat.st_dev == cwd_stat.st_dev &&
+		    pwd_stat.st_ino == cwd_stat.st_ino)
+			strbuf_addstr(sb, pwd);
+		else
+			strbuf_addstr(sb, cwd);
+		if (sb->len > orig_len && !is_dir_sep(sb->buf[sb->len - 1]))
+			strbuf_addch(sb, '/');
+		free(cwd);
+	}
+	strbuf_addstr(sb, path);
+}
+
 int printf_ln(const char *fmt, ...)
 {
 	int ret;