mdocml: STYLE message about full stop at the end of .Nd; inspired by

mdocml: STYLE message about full stop at the end of .Nd; inspired by

[schwarze]

Log Message:
-----------
STYLE message about full stop at the end of .Nd; inspired by mdoclint(1)

Modified Files:
--------------
    mdocml:
        mandoc.1
        mandoc.h
        mdoc_validate.c
        read.c

Revision Data
-------------
Index: mdoc_validate.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/mdoc_validate.c,v
retrieving revision 1.329
retrieving revision 1.330
diff -Lmdoc_validate.c -Lmdoc_validate.c -u -p -r1.329 -r1.330
--- mdoc_validate.c
+++ mdoc_validate.c
@@ -1076,6 +1076,7 @@ static void
 post_nd(POST_ARGS)
 {
 	struct roff_node	*n;
+	size_t			 sz;
 
 	n = mdoc->last;
 
@@ -1089,6 +1090,11 @@ post_nd(POST_ARGS)
 	if (n->child == NULL)
 		mandoc_msg(MANDOCERR_ND_EMPTY, mdoc->parse,
 		    n->line, n->pos, "Nd");
+	else if (n->last->type == ROFFT_TEXT &&
+	    (sz = strlen(n->last->string)) != 0 &&
+	    n->last->string[sz - 1] == '.')
+		mandoc_msg(MANDOCERR_ND_DOT, mdoc->parse,
+		    n->last->line, n->last->pos + sz - 1, NULL);
 
 	post_hyph(mdoc);
 }
Index: mandoc.h
===================================================================
RCS file: /home/cvs/mdocml/mdocml/mandoc.h,v
retrieving revision 1.218
retrieving revision 1.219
diff -Lmandoc.h -Lmandoc.h -u -p -r1.218 -r1.219
--- mandoc.h
+++ mandoc.h
@@ -48,6 +48,7 @@ enum	mandocerr {
 
 	MANDOCERR_MACRO_USELESS, /* useless macro: macro */
 	MANDOCERR_BX, /* consider using OS macro: macro */
+	MANDOCERR_ND_DOT, /* description line ends with a full stop */
 
 	MANDOCERR_WARNING, /* ===== start of warnings ===== */
 
Index: read.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/read.c,v
retrieving revision 1.167
retrieving revision 1.168
diff -Lread.c -Lread.c -u -p -r1.167 -r1.168
--- read.c
+++ read.c
@@ -90,6 +90,7 @@ static	const char * const	mandocerrs[MAN
 
 	"useless macro",
 	"consider using OS macro",
+	"description line ends with a full stop",
 
 	"generic warning",
 
Index: mandoc.1
===================================================================
RCS file: /home/cvs/mdocml/mdocml/mandoc.1,v
retrieving revision 1.191
retrieving revision 1.192
diff -Lmandoc.1 -Lmandoc.1 -u -p -r1.191 -r1.192
--- mandoc.1
+++ mandoc.1
@@ -763,6 +763,11 @@ macro that could be represented using
 .Ic \&Fx ,
 or
 .Ic \&Dx .
+.It Sy "description line ends with a full stop"
+.Pq mdoc
+Do not use punctuation at the end of an
+.Ic \&Nd
+block.
 .El
 .Ss Warnings related to the document prologue
 .Bl -ohang
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