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

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

[schwarze]

Log Message:
-----------
add the \(ru (0.5m baseline ruler) character escape sequence,
abused by mail/nmh; groff_char(7) confirms that this really exists

Modified Files:
--------------
    mdocml:
        chars.c
        mandoc_char.7
    mdocml/regress/char/unicode:
        ascii.in
        ascii.out_ascii
        ascii.out_html
        ascii.out_utf8

Revision Data
-------------
Index: chars.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/chars.c,v
retrieving revision 1.70
retrieving revision 1.71
diff -Lchars.c -Lchars.c -u -p -r1.70 -r1.71
--- chars.c
+++ chars.c
@@ -61,6 +61,7 @@ static struct ln lines[] = {
 	{ "ba",			"|",		0x007c	},
 	{ "br",			"|",		0x2502	},
 	{ "ul",			"_",		0x005f	},
+	{ "ru",			"_",		0x005f	},
 	{ "rn",			"-",		0x203e	},
 	{ "bb",			"|",		0x00a6	},
 	{ "sl",			"/",		0x002f	},
Index: mandoc_char.7
===================================================================
RCS file: /home/cvs/mdocml/mdocml/mandoc_char.7,v
retrieving revision 1.66
retrieving revision 1.67
diff -Lmandoc_char.7 -Lmandoc_char.7 -u -p -r1.66 -r1.67
--- mandoc_char.7
+++ mandoc_char.7
@@ -260,6 +260,7 @@ Lines:
 .It \e(ba    Ta \(ba        Ta bar
 .It \e(br    Ta \(br        Ta box rule
 .It \e(ul    Ta \(ul        Ta underscore
+.It \e(ru    Ta \(ru        Ta underscore (width 0.5m)
 .It \e(rn    Ta \(rn        Ta overline
 .It \e(bb    Ta \(bb        Ta broken bar
 .It \e(sl    Ta \(sl        Ta forward slash
Index: ascii.out_ascii
===================================================================
RCS file: /home/cvs/mdocml/mdocml/regress/char/unicode/ascii.out_ascii,v
retrieving revision 1.1
retrieving revision 1.2
diff -Lregress/char/unicode/ascii.out_ascii -Lregress/char/unicode/ascii.out_ascii -u -p -r1.1 -r1.2
--- regress/char/unicode/ascii.out_ascii
+++ regress/char/unicode/ascii.out_ascii
@@ -21,7 +21,7 @@ D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
        \\\\ REVERSE SOLIDUS
        ]]]  RIGHT SQUARE BRACKET
        ^^^^ CIRCUMFLEX ACCENT
-       ___  LOW LINE
+       ____ LOW LINE
        ```` GRAVE ACCENT
        {{{  LEFT CURLY BRACKET
        |||| VERTICAL LINE
Index: ascii.out_utf8
===================================================================
RCS file: /home/cvs/mdocml/mdocml/regress/char/unicode/ascii.out_utf8,v
retrieving revision 1.1
retrieving revision 1.2
diff -Lregress/char/unicode/ascii.out_utf8 -Lregress/char/unicode/ascii.out_utf8 -u -p -r1.1 -r1.2
--- regress/char/unicode/ascii.out_utf8
+++ regress/char/unicode/ascii.out_utf8
@@ -21,7 +21,7 @@ D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
        \\\\ REVERSE SOLIDUS
        ]]]  RIGHT SQUARE BRACKET
        ^^^^ CIRCUMFLEX ACCENT
-       ___  LOW LINE
+       ____ LOW LINE
        ```` GRAVE ACCENT
        {{{  LEFT CURLY BRACKET
        |||| VERTICAL LINE
Index: ascii.out_html
===================================================================
RCS file: /home/cvs/mdocml/mdocml/regress/char/unicode/ascii.out_html,v
retrieving revision 1.1
retrieving revision 1.2
diff -Lregress/char/unicode/ascii.out_html -Lregress/char/unicode/ascii.out_html -u -p -r1.1 -r1.2
--- regress/char/unicode/ascii.out_html
+++ regress/char/unicode/ascii.out_html
@@ -13,7 +13,7 @@ $$$	DOLLAR SIGN
 \\\\	REVERSE SOLIDUS
 ]]]	RIGHT SQUARE BRACKET
 ^^^^	CIRCUMFLEX ACCENT
-___	LOW LINE
+____	LOW LINE
 ````	GRAVE ACCENT
 {{{	LEFT CURLY BRACKET
 ||||	VERTICAL LINE
Index: ascii.in
===================================================================
RCS file: /home/cvs/mdocml/mdocml/regress/char/unicode/ascii.in,v
retrieving revision 1.1
retrieving revision 1.2
diff -Lregress/char/unicode/ascii.in -Lregress/char/unicode/ascii.in -u -p -r1.1 -r1.2
--- regress/char/unicode/ascii.in
+++ regress/char/unicode/ascii.in
@@ -18,7 +18,7 @@ BEGINTEST
 \[u005C]\N'92'\e\(rs	REVERSE SOLIDUS
 \[u005D]\N'93'\(rB	RIGHT SQUARE BRACKET
 \[u005E]\N'94'\(a^\(ha	CIRCUMFLEX ACCENT
-\[u005F]\N'95'\(ul	LOW LINE
+\[u005F]\N'95'\(ul\(ru	LOW LINE
 \[u0060]\N'96'\`\(ga	GRAVE ACCENT
 \[u007B]\N'123'\(lC	LEFT CURLY BRACKET
 \[u007C]\N'124'\(ba\(or	VERTICAL LINE
--
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