push.default doc: explain simple after upstream

diff --git a/dir.c b/dir.c
index 2087d23b6bce5280e54770923cb7b7274361d667..e98760c72deb94d86a911f706f7c6c2beca58e5e 100644 (file)
--- a/dir.c
+++ b/dir.c
@@ -1172,23 +1172,27 @@ int is_empty_dir(const char *path)
        return ret;
 }
 
-int remove_dir_recursively(struct strbuf *path, int flag)
+static int remove_dir_recurse(struct strbuf *path, int flag, int *kept_up)
 {
        DIR *dir;
        struct dirent *e;
-       int ret = 0, original_len = path->len, len;
+       int ret = 0, original_len = path->len, len, kept_down = 0;
        int only_empty = (flag & REMOVE_DIR_EMPTY_ONLY);
        int keep_toplevel = (flag & REMOVE_DIR_KEEP_TOPLEVEL);
        unsigned char submodule_head[20];
 
        if ((flag & REMOVE_DIR_KEEP_NESTED_GIT) &&
-           !resolve_gitlink_ref(path->buf, "HEAD", submodule_head))
+           !resolve_gitlink_ref(path->buf, "HEAD", submodule_head)) {
                /* Do not descend and nuke a nested git work tree. */
+               if (kept_up)
+                       *kept_up = 1;
                return 0;
+       }
 
-       flag &= ~(REMOVE_DIR_KEEP_TOPLEVEL|REMOVE_DIR_KEEP_NESTED_GIT);
+       flag &= ~REMOVE_DIR_KEEP_TOPLEVEL;
        dir = opendir(path->buf);
        if (!dir) {
+               /* an empty dir could be removed even if it is unreadble */
                if (!keep_toplevel)
                        return rmdir(path->buf);
                else
@@ -1208,7 +1212,7 @@ int remove_dir_recursively(struct strbuf *path, int flag)
                if (lstat(path->buf, &st))
                        ; /* fall thru */
                else if (S_ISDIR(st.st_mode)) {
-                       if (!remove_dir_recursively(path, flag))
+                       if (!remove_dir_recurse(path, flag, &kept_down))
                                continue; /* happy */
                } else if (!only_empty && !unlink(path->buf))
                        continue; /* happy, too */
@@ -1220,11 +1224,22 @@ int remove_dir_recursively(struct strbuf *path, int flag)
        closedir(dir);
 
        strbuf_setlen(path, original_len);
-       if (!ret && !keep_toplevel)
+       if (!ret && !keep_toplevel && !kept_down)
                ret = rmdir(path->buf);
+       else if (kept_up)
+               /*
+                * report the uplevel that it is not an error that we
+                * did not rmdir() our directory.
+                */
+               *kept_up = !ret;
        return ret;
 }
 
+int remove_dir_recursively(struct strbuf *path, int flag)
+{
+       return remove_dir_recurse(path, flag, NULL);
+}
+
 void setup_standard_excludes(struct dir_struct *dir)
 {
        const char *path;