[PATCH v2 10/26] wrapper.c: allow to create an empty file with write_file()

[Nguyễn Thái Ngọc Duy]

This is used later on to create empty .git/worktrees/xxx/locked when
"git worktree lock" is called with no reason given.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclo...@gmail.com>
---
 wrapper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wrapper.c b/wrapper.c
index 29a45d2..1dc1eff 100644
--- a/wrapper.c
+++ b/wrapper.c
@@ -666,7 +666,7 @@ static int write_file_v(const char *path, int fatal,
        }
        strbuf_vaddf(&sb, fmt, params);
        strbuf_complete_line(&sb);
-       if (write_in_full(fd, sb.buf, sb.len) != sb.len) {
+       if (sb.len && write_in_full(fd, sb.buf, sb.len) != sb.len) {
                int err = errno;
                close(fd);
                strbuf_release(&sb);
-- 
2.7.0.377.g4cd97dd

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