Workaround to work with less sophisticated sed versions.
For example NetBSD sed doesn't know about '\|'.
#!/bin/shhg init acd ahg init becho x > b/xecho '# should print nothing'hg stecho '# should print ? b/x'hg st b/xhg add b/xecho '# should print A b/x'hg stecho '# should forget b/x'hg revertecho '# should print nothing'hg st b