add the \(ru (0.5m baseline ruler) character escape sequence,

abused by mail/nmh; groff_char(7) confirms that this really exists

1 files changed, 1 insertions, 0 deletions

diff --git a/chars.c b/chars.c
index 7dd957cd..f1b738a1 100644
--- a/chars.c
+++ b/chars.c
@@ -61,6 +61,7 @@ static struct ln lines[] = {
 	{ "ba",			"|",		0x007c	},
 	{ "br",			"|",		0x2502	},
 	{ "ul",			"_",		0x005f	},
+	{ "ru",			"_",		0x005f	},
 	{ "rn",			"-",		0x203e	},
 	{ "bb",			"|",		0x00a6	},
 	{ "sl",			"/",		0x002f	},