format-patch: fix two-argument special case, and make it easier to pick single commits

diff --git a/commit-tree.c b/commit-tree.c
index d545f62aaa48f2fb9f3aff5fd422c7ab32d94c62..b60299fed0442edec21f123e92774238d4533bea 100644 (file)
--- a/commit-tree.c
+++ b/commit-tree.c
@@ -5,10 +5,6 @@
  */
 #include "cache.h"
 
-#include <pwd.h>
-#include <time.h>
-#include <ctype.h>
-
 #define BLOCKING (1ul << 14)
 
 /*
@@ -64,7 +60,7 @@ static void check_valid(unsigned char *sha1, const char *expect)
 #define MAXPARENT (16)
 static unsigned char parent_sha1[MAXPARENT][20];
 
-static char *commit_tree_usage = "git-commit-tree <sha1> [-p <sha1>]* < changelog";
+static const char commit_tree_usage[] = "git-commit-tree <sha1> [-p <sha1>]* < changelog";
 
 static int new_parent(int idx)
 {
@@ -89,6 +85,9 @@ int main(int argc, char **argv)
        char *buffer;
        unsigned int size;
 
+       setup_ident();
+       git_config(git_default_config);
+
        if (argc < 2 || get_sha1_hex(argv[1], tree_sha1) < 0)
                usage(commit_tree_usage);
 
@@ -104,7 +103,6 @@ int main(int argc, char **argv)
        }
        if (!parents)
                fprintf(stderr, "Committing initial tree %s\n", argv[1]);
-       setup_ident();
 
        init_buffer(&buffer, &size);
        add_buffer(&buffer, &size, "tree %s\n", sha1_to_hex(tree_sha1));