Merge branch 'fc/doc-fast-forward'

* fc/doc-fast-forward:
  Use 'fast-forward' all over the place

Conflicts:
	builtin-merge.c
diff --git a/builtin-merge.c b/builtin-merge.c
index c8d7bde..57eedd4 100644
--- a/builtin-merge.c
+++ b/builtin-merge.c
@@ -167,9 +167,9 @@
 	OPT_BOOLEAN(0, "commit", &option_commit,
 		"perform a commit if the merge succeeds (default)"),
 	OPT_BOOLEAN(0, "ff", &allow_fast_forward,
-		"allow fast forward (default)"),
+		"allow fast-forward (default)"),
 	OPT_BOOLEAN(0, "ff-only", &fast_forward_only,
-		"abort if fast forward is not possible"),
+		"abort if fast-forward is not possible"),
 	OPT_CALLBACK('s', "strategy", &use_strategies, "strategy",
 		"merge strategy to use", option_parse_strategy),
 	OPT_CALLBACK('m', "message", &merge_msg, "message",
@@ -1021,7 +1021,7 @@
 				hex,
 				find_unique_abbrev(remoteheads->item->object.sha1,
 				DEFAULT_ABBREV));
-		strbuf_addstr(&msg, "Fast forward");
+		strbuf_addstr(&msg, "Fast-forward");
 		if (have_message)
 			strbuf_addstr(&msg,
 				" (no commit created; -m option ignored)");
@@ -1039,12 +1039,12 @@
 	} else if (!remoteheads->next && common->next)
 		;
 		/*
-		 * We are not doing octopus and not fast forward.  Need
+		 * We are not doing octopus and not fast-forward.  Need
 		 * a real merge.
 		 */
 	else if (!remoteheads->next && !common->next && option_commit) {
 		/*
-		 * We are not doing octopus, not fast forward, and have
+		 * We are not doing octopus, not fast-forward, and have
 		 * only one common.
 		 */
 		refresh_cache(REFRESH_QUIET);
@@ -1088,7 +1088,7 @@
 	}
 
 	if (fast_forward_only)
-		die("Not possible to fast forward, aborting.");
+		die("Not possible to fast-forward, aborting.");
 
 	/* We are going to make a new commit. */
 	git_committer_info(IDENT_ERROR_ON_NO_NAME);