Tiny EOS patch. Back-end cues front-end through flag. Front-end cues output engine with flag.

5 files changed, 38 insertions, 2 deletions

diff --git a/mdoc.c b/mdoc.c
index 08064f34..efa18631 100644
--- a/mdoc.c
+++ b/mdoc.c
@@ -689,7 +689,33 @@ mdoc_ptext(struct mdoc *m, int line, char *buf)
 
 	/* Allocate the whole word. */
 
-	return(mdoc_word_alloc(m, line, 0, buf));
+	if ( ! mdoc_word_alloc(m, line, 0, buf))
+		return(0);
+
+	/*
+	 * End-of-sentence check.  If the last character is an unescaped
+	 * EOS character, then flag the node as being the end of a
+	 * sentence.  The front-end will know how to interpret this.
+	 */
+
+	assert(i);
+
+	switch (buf[i - 1]) {
+	case ('.'):
+		if (i > 1 && '\\' == buf[i - 2])
+			break;
+		/* FALLTHROUGH */
+	case ('!'):
+		/* FALLTHROUGH */
+	case ('?'):
+		m->last->flags |= MDOC_EOS;
+		break;
+	default:
+		break;
+
+	}
+
+	return(1);
 }
 
 
diff --git a/mdoc.h b/mdoc.h
index 911c88ec..9246b2a3 100644
--- a/mdoc.h
+++ b/mdoc.h
@@ -260,6 +260,7 @@ struct	mdoc_node {
 	int		  flags;
 #define	MDOC_VALID	 (1 << 0)
 #define	MDOC_ACTED	 (1 << 1)
+#define	MDOC_EOS	 (1 << 2)
 	enum mdoc_type	  type;
 	enum mdoc_sec	  sec;
 
diff --git a/mdoc_term.c b/mdoc_term.c
index b175c784..de9af97e 100644
--- a/mdoc_term.c
+++ b/mdoc_term.c
@@ -337,6 +337,9 @@ print_mdoc_node(DECL_ARGS)
 		if (termacts[n->tok].post)
 			(*termacts[n->tok].post)(p, &npair, m, n);
 
+	if (MDOC_EOS & n->flags)
+		p->flags |= TERMP_SENTENCE;
+
 	p->offset = offset;
 	p->rmargin = rmargin;
 }
diff --git a/term.c b/term.c
index cf068e44..bdd3d38c 100644
--- a/term.c
+++ b/term.c
@@ -445,12 +445,17 @@ term_word(struct termp *p, const char *word)
 			break;
 		}
 
-	if ( ! (TERMP_NOSPACE & p->flags))
+	if ( ! (TERMP_NOSPACE & p->flags)) {
 		bufferc(p, ' ');
+		if (TERMP_SENTENCE & p->flags)
+			bufferc(p, ' ');
+	}
 
 	if ( ! (p->flags & TERMP_NONOSPACE))
 		p->flags &= ~TERMP_NOSPACE;
 
+	p->flags &= ~TERMP_SENTENCE;
+
 	/* FIXME: use strcspn. */
 
 	while (*word) {
diff --git a/term.h b/term.h
index f048e091..62da4174 100644
--- a/term.h
+++ b/term.h
@@ -39,6 +39,7 @@ struct	termp {
 	size_t		  col;		/* Bytes in buf. */
 	int		  overstep;	/* See termp_flushln(). */
 	int		  flags;
+#define	TERMP_SENTENCE	 (1 << 1)	/* Space before a sentence. */
 #define	TERMP_NOSPACE	 (1 << 2)	/* No space before words. */
 #define	TERMP_NOLPAD	 (1 << 3)	/* See term_flushln(). */
 #define	TERMP_NOBREAK	 (1 << 4)	/* See term_flushln(). */