Merge branch 'ma/branch-list-paginate'

"git branch --list" learned to show its output through the pager by
default when the output is going to a terminal, which is controlled
by the pager.branch configuration variable.  This is similar to a
recent change to "git tag --list".

* ma/branch-list-paginate:
  branch: change default of `pager.branch` to "on"
  branch: respect `pager.branch` in list-mode only
  t7006: add tests for how git branch paginates

builtin/branch.c

@@ -675,6 +675,9 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 		copy *= 2;
 	}
 
+	if (list)
+		setup_auto_pager("branch", 1);
+
 	if (delete) {
 		if (!argc)
 			die(_("branch name required"));