ls-files: honour per-directory ignore file from higher directories.

When git-ls-files -o --exclude-per-directory=.gitignore is run
from a subdirectory, it did not read from .gitignore from its
parent directory.  Reading from them makes output from these two
commands consistent:

    $ git ls-files -o --exclude-per-directory=.gitignore Documentation
    $ cd Documentation &&
      git ls-files -o --exclude-per-directory=.gitignore

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/ls-files.c b/ls-files.c
index 6af3b09..7024cf1 100644 (file)
--- a/ls-files.c
+++ b/ls-files.c
@@ -474,8 +474,28 @@ static void show_files(void)
                const char *path = ".", *base = "";
                int baselen = prefix_len;
 
-               if (baselen)
+               if (baselen) {
                        path = base = prefix;
+                       if (exclude_per_dir) {
+                               char *p, *pp = xmalloc(baselen+1);
+                               memcpy(pp, prefix, baselen+1);
+                               p = pp;
+                               while (1) {
+                                       char save = *p;
+                                       *p = 0;
+                                       push_exclude_per_directory(pp, p-pp);
+                                       *p++ = save;
+                                       if (!save)
+                                               break;
+                                       p = strchr(p, '/');
+                                       if (p)
+                                               p++;
+                                       else
+                                               p = pp + baselen;
+                               }
+                               free(pp);
+                       }
+               }
                read_directory(path, base, baselen);
                qsort(dir, nr_dir, sizeof(struct nond_on_fs *), cmp_name);
                if (show_others)