Merge branch 'master' into next

* master:
  git-tar-tree: fix minor memory leak
  Document rev-list's option --merge
  Further clean-up: usage() vs die()
  Replace some calls to die(usage_str) with usage(usage_str).
  Fixup command names in some usage strings.

Documentation/git-rev-list.txt

@@ -22,6 +22,7 @@ SYNOPSIS
 	     [ [\--objects | \--objects-edge] [ \--unpacked ] ]
 	     [ \--pretty | \--header ]
 	     [ \--bisect ]
+	     [ \--merge ]
 	     <commit>... [ \-- <paths>... ]
 
 DESCRIPTION
@@ -123,6 +124,10 @@ OPTIONS
 	topological order (i.e. descendant commits are shown
 	before their parents).
 
+--merge::
+	After a failed merge, show refs that touch files having a
+	conflict and don't exist on all heads to merge.
+
 Author
 ------
 Written by Linus Torvalds <torvalds@osdl.org>

blame.c

@@ -20,7 +20,7 @@
 
 #define DEBUG 0
 
-static const char blame_usage[] = "[-c] [-l] [-t] [-S <revs-file>] [--] file [commit]\n"
+static const char blame_usage[] = "git-blame [-c] [-l] [-t] [-S <revs-file>] [--] file [commit]\n"
 	"  -c, --compatibility Use the same output mode as git-annotate (Default: off)\n"
 	"  -l, --long          Show long commit SHA1 (Default: off)\n"
 	"  -t, --time          Show raw timestamp (Default: off)\n"

builtin-add.c

@@ -117,7 +117,7 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 			verbose = 1;
 			continue;
 		}
-		die(builtin_add_usage);
+		usage(builtin_add_usage);
 	}
 	pathspec = get_pathspec(prefix, argv + i);
 

builtin-check-ref-format.c

@@ -9,6 +9,6 @@
 int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
 {
 	if (argc != 2)
-		usage("git check-ref-format refname");
+		usage("git-check-ref-format refname");
 	return !!check_ref_format(argv[1]);
 }

builtin-diff.c

@@ -23,7 +23,7 @@ struct blobinfo {
 };
 
 static const char builtin_diff_usage[] =
-"diff <options> <rev>{0,2} -- <path>*";
+"git-diff <options> <rev>{0,2} -- <path>*";
 
 static int builtin_diff_files(struct rev_info *revs,
 			      int argc, const char **argv)

builtin-init-db.c

@@ -267,7 +267,7 @@ int cmd_init_db(int argc, const char **argv, const char *prefix)
 		else if (!strncmp(arg, "--shared=", 9))
 			shared_repository = git_config_perm("arg", arg+9);
 		else
-			die(init_db_usage);
+			usage(init_db_usage);
 	}
 
 	/*

builtin-mv.c

@@ -99,7 +99,7 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
 			ignore_errors = 1;
 			continue;
 		}
-		die(builtin_mv_usage);
+		usage(builtin_mv_usage);
 	}
 	count = argc - i - 1;
 	if (count < 1)

builtin-prune.c

@@ -10,7 +10,7 @@
 #include "builtin.h"
 #include "cache-tree.h"
 
-static const char prune_usage[] = "git prune [-n]";
+static const char prune_usage[] = "git-prune [-n]";
 static int show_only = 0;
 static struct rev_info revs;
 

builtin-push.c

@@ -8,7 +8,7 @@
 
 #define MAX_URI (16)
 
-static const char push_usage[] = "git push [--all] [--tags] [-f | --force] <repository> [<refspec>...]";
+static const char push_usage[] = "git-push [--all] [--tags] [-f | --force] <repository> [<refspec>...]";
 
 static int all = 0, tags = 0, force = 0, thin = 1;
 static const char *execute = NULL;

builtin-rm.c

@@ -80,7 +80,7 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
 			force = 1;
 			continue;
 		}
-		die(builtin_rm_usage);
+		usage(builtin_rm_usage);
 	}
 	if (argc <= i)
 		usage(builtin_rm_usage);
@@ -115,7 +115,7 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
 		printf("rm '%s'\n", path);
 
 		if (remove_file_from_cache(path))
-			die("git rm: unable to remove %s", path);
+			die("git-rm: unable to remove %s", path);
 		cache_tree_invalidate_path(active_cache_tree, path);
 	}
 
@@ -139,7 +139,7 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
 				continue;
 			}
 			if (!removed)
-				die("git rm: %s: %s", path, strerror(errno));
+				die("git-rm: %s: %s", path, strerror(errno));
 		}
 	}
 

builtin-tar-tree.c

@@ -314,6 +314,7 @@ static int generate_tar(int argc, const char **argv, const char *prefix)
 	struct commit *commit;
 	struct tree_desc tree;
 	struct strbuf current_path;
+	void *buffer;
 
 	current_path.buf = xmalloc(PATH_MAX);
 	current_path.alloc = PATH_MAX;
@@ -341,8 +342,8 @@ static int generate_tar(int argc, const char **argv, const char *prefix)
 	} else
 		archive_time = time(NULL);
 
-	tree.buf = read_object_with_reference(sha1, tree_type, &tree.size,
-	                                      tree_sha1);
+	tree.buf = buffer = read_object_with_reference(sha1, tree_type,
+	                                               &tree.size, tree_sha1);
 	if (!tree.buf)
 		die("not a reference to a tag, commit or tree object: %s",
 		    sha1_to_hex(sha1));
@@ -351,6 +352,7 @@ static int generate_tar(int argc, const char **argv, const char *prefix)
 		write_entry(tree_sha1, &current_path, 040777, NULL, 0);
 	traverse_tree(&tree, &current_path);
 	write_trailer();
+	free(buffer);
 	free(current_path.buf);
 	return 0;
 }

builtin-write-tree.c

@@ -73,7 +73,7 @@ int cmd_write_tree(int argc, const char **argv, const char *unused_prefix)
 		else if (!strncmp(arg, "--prefix=", 9))
 			prefix = arg + 9;
 		else
-			die(write_tree_usage);
+			usage(write_tree_usage);
 		argc--; argv++;
 	}
 

hash-object.c

@@ -46,7 +46,7 @@ int main(int argc, char **argv)
 		if (!no_more_flags && argv[i][0] == '-') {
 			if (!strcmp(argv[i], "-t")) {
 				if (argc <= ++i)
-					die(hash_object_usage);
+					usage(hash_object_usage);
 				type = argv[i];
 			}
 			else if (!strcmp(argv[i], "-w")) {
@@ -66,8 +66,8 @@ int main(int argc, char **argv)
 				hash_stdin(type, write_object);
 			}
 			else
-				die(hash_object_usage);
-		} 
+				usage(hash_object_usage);
+		}
 		else {
 			const char *arg = argv[i];
 			if (0 <= prefix_length)

mktag.c

@@ -123,7 +123,7 @@ int main(int argc, char **argv)
 	unsigned char result_sha1[20];
 
 	if (argc != 1)
-		usage("cat <signaturefile> | git-mktag");
+		usage("git-mktag < signaturefile");
 
 	setup_git_directory();
 

mktree.c

@@ -71,7 +71,7 @@ static void write_tree(unsigned char *sha1)
 	write_sha1_file(buffer, offset, tree_type, sha1);
 }
 
-static const char mktree_usage[] = "mktree [-z]";
+static const char mktree_usage[] = "git-mktree [-z]";
 
 int main(int ac, char **av)
 {