diff: add --detect-copies-harder as a synonym for --find-copies-harder

diff --git a/fast-import.c b/fast-import.c
index ddad289dae37c2115f57f88dc207f0d2fa6ab1f3..77549ebd6fbfbea051901d4ab474eebc8e2dbdbd 100644 (file)
--- a/fast-import.c
+++ b/fast-import.c
@@ -1454,6 +1454,15 @@ static int tree_content_set(
                n = slash1 - p;
        else
                n = strlen(p);
+       if (!slash1 && !n) {
+               if (!S_ISDIR(mode))
+                       die("Root cannot be a non-directory");
+               hashcpy(root->versions[1].sha1, sha1);
+               if (root->tree)
+                       release_tree_content_recursive(root->tree);
+               root->tree = subtree;
+               return 1;
+       }
        if (!n)
                die("Empty path component found in input");
        if (!slash1 && !S_ISDIR(mode) && subtree)
@@ -1528,6 +1537,14 @@ static int tree_content_remove(
        for (i = 0; i < t->entry_count; i++) {
                e = t->entries[i];
                if (e->name->str_len == n && !strncmp(p, e->name->str_dat, n)) {
+                       if (slash1 && !S_ISDIR(e->versions[1].mode))
+                               /*
+                                * If p names a file in some subdirectory, and a
+                                * file or symlink matching the name of the
+                                * parent directory of p exists, then p cannot
+                                * exist and need not be deleted.
+                                */
+                               return 1;
                        if (!slash1 || !S_ISDIR(e->versions[1].mode))
                                goto del_entry;
                        if (!e->tree)
@@ -2131,6 +2148,7 @@ static void file_change_m(struct branch *b)
        case S_IFREG | 0644:
        case S_IFREG | 0755:
        case S_IFLNK:
+       case S_IFDIR:
        case S_IFGITLINK:
                /* ok */
                break;
@@ -2176,23 +2194,28 @@ static void file_change_m(struct branch *b)
                 * another repository.
                 */
        } else if (inline_data) {
+               if (S_ISDIR(mode))
+                       die("Directories cannot be specified 'inline': %s",
+                               command_buf.buf);
                if (p != uq.buf) {
                        strbuf_addstr(&uq, p);
                        p = uq.buf;
                }
                read_next_command();
                parse_and_store_blob(&last_blob, sha1, 0);
-       } else if (oe) {
-               if (oe->type != OBJ_BLOB)
-                       die("Not a blob (actually a %s): %s",
-                               typename(oe->type), command_buf.buf);
        } else {
-               enum object_type type = sha1_object_info(sha1, NULL);
+               enum object_type expected = S_ISDIR(mode) ?
+                                               OBJ_TREE: OBJ_BLOB;
+               enum object_type type = oe ? oe->type :
+                                       sha1_object_info(sha1, NULL);
                if (type < 0)
-                       die("Blob not found: %s", command_buf.buf);
-               if (type != OBJ_BLOB)
-                       die("Not a blob (actually a %s): %s",
-                           typename(type), command_buf.buf);
+                       die("%s not found: %s",
+                                       S_ISDIR(mode) ?  "Tree" : "Blob",
+                                       command_buf.buf);
+               if (type != expected)
+                       die("Not a %s (actually a %s): %s",
+                               typename(expected), typename(type),
+                               command_buf.buf);
        }
 
        tree_content_set(&b->branch_tree, p, sha1, mode, NULL);
@@ -2870,7 +2893,7 @@ static int git_pack_config(const char *k, const char *v, void *cb)
 }
 
 static const char fast_import_usage[] =
-"git fast-import [--date-format=f] [--max-pack-size=n] [--big-file-threshold=n] [--depth=n] [--active-branches=n] [--export-marks=marks.file]";
+"git fast-import [--date-format=<f>] [--max-pack-size=<n>] [--big-file-threshold=<n>] [--depth=<n>] [--active-branches=<n>] [--export-marks=<marks.file>]";
 
 static void parse_argv(void)
 {