===================================================================
RCS file: /cvs/docbook2mdoc/macro.c,v
retrieving revision 1.9
retrieving revision 1.20
diff -u -p -r1.9 -r1.20
--- docbook2mdoc/macro.c	2019/04/11 04:23:22	1.9
+++ docbook2mdoc/macro.c	2019/05/02 12:40:42	1.20
@@ -1,4 +1,4 @@
-/* $Id: macro.c,v 1.9 2019/04/11 04:23:22 schwarze Exp $ */
+/* $Id: macro.c,v 1.20 2019/05/02 12:40:42 schwarze Exp $ */
 /*
  * Copyright (c) 2019 Ingo Schwarze <schwarze@openbsd.org>
  *
@@ -28,20 +28,36 @@
  */
 
 void
+para_check(struct format *f)
+{
+	if (f->parastate != PARA_WANT)
+		return;
+	if (f->linestate != LINE_NEW) {
+		putchar('\n');
+		f->linestate = LINE_NEW;
+	}
+	puts(".Pp");
+	f->parastate = PARA_HAVE;
+}
+
+void
 macro_open(struct format *f, const char *name)
 {
+	para_check(f);
 	switch (f->linestate) {
 	case LINE_MACRO:
 		if (f->flags & FMT_NOSPC) {
 			fputs(" Ns ", stdout);
 			break;
 		}
-		if (f->flags & (FMT_CHILD | FMT_IMPL)) {
+		if (f->nofill || f->flags & (FMT_CHILD | FMT_IMPL)) {
 			putchar(' ');
 			break;
 		}
 		/* FALLTHROUGH */
 	case LINE_TEXT:
+		if (f->nofill && f->linestate == LINE_TEXT)
+			fputs(" \\c", stdout);
 		putchar('\n');
 		/* FALLTHROUGH */
 	case LINE_NEW:
@@ -53,6 +69,7 @@ macro_open(struct format *f, const char *name)
 	fputs(name, stdout);
 	f->flags &= FMT_IMPL;
 	f->flags |= FMT_ARG;
+	f->parastate = PARA_MID;
 }
 
 void
@@ -79,11 +96,13 @@ void
 macro_addarg(struct format *f, const char *arg, int flags)
 {
 	const char	*cp;
+	int		 quote_now;
 
 	assert(f->linestate == LINE_MACRO);
 
 	/* Quote if requested and necessary. */
 
+	quote_now = 0;
 	if ((flags & (ARG_SINGLE | ARG_QUOTED)) == ARG_SINGLE) {
 		for (cp = arg; *cp != '\0'; cp++)
 			if (isspace((unsigned char)*cp))
@@ -95,6 +114,7 @@ macro_addarg(struct format *f, const char *arg, int fl
 			}
 			putchar('"');
 			flags = ARG_QUOTED;
+			quote_now = 1;
 		}
 	}
 
@@ -112,13 +132,16 @@ macro_addarg(struct format *f, const char *arg, int fl
 
 		/* Escape us if we look like a macro. */
 
-		if ((flags & ARG_QUOTED) == 0 &&
+		if ((flags & (ARG_QUOTED | ARG_UPPER)) == 0 &&
 		    (cp == arg || isspace((unsigned char)cp[-1])) &&
 		    isupper((unsigned char)cp[0]) &&
 		    islower((unsigned char)cp[1]) &&
 		    (cp[2] == '\0' || cp[2] == ' ' ||
-		     (islower((unsigned char)cp[2]) &&
-		      (cp[3] == '\0' || cp[3] == ' '))))
+		     ((cp[3] == '\0' || cp[3] == ' ') &&
+		      (strncmp(cp, "Brq", 3) == 0 ||
+		       strncmp(cp, "Bro", 3) == 0 ||
+		       strncmp(cp, "Brc", 3) == 0 ||
+		       strncmp(cp, "Bsx", 3) == 0))))
 			fputs("\\&", stdout);
 
 		if (*cp == '"')
@@ -130,6 +153,9 @@ macro_addarg(struct format *f, const char *arg, int fl
 		if (*cp == '\\')
 			putchar('e');
 	}
+	if (quote_now)
+		putchar('"');
+	f->parastate = PARA_MID;
 }
 
 void
@@ -147,7 +173,7 @@ void
 macro_addnode(struct format *f, struct pnode *n, int flags)
 {
 	struct pnode	*nc;
-	int		 quote_now;
+	int		 is_text, quote_now;
 
 	assert(f->linestate == LINE_MACRO);
 
@@ -162,6 +188,7 @@ macro_addnode(struct format *f, struct pnode *n, int f
 
 	if (n->node == NODE_TEXT || n->node == NODE_ESCAPE) {
 		macro_addarg(f, n->b, flags);
+		f->parastate = PARA_MID;
 		return;
 	}
 
@@ -191,11 +218,18 @@ macro_addnode(struct format *f, struct pnode *n, int f
 
 	while (nc != NULL) {
 		macro_addnode(f, nc, flags);
+		is_text = pnode_class(nc->node) == CLASS_TEXT;
 		nc = TAILQ_NEXT(nc, child);
-		flags |= ARG_SPACE;
+		if (nc == NULL || pnode_class(nc->node) != CLASS_TEXT)
+			is_text = 0;
+		if (is_text && (nc->flags & NFLAG_SPC) == 0)
+			flags &= ~ARG_SPACE;
+		else
+			flags |= ARG_SPACE;
 	}
 	if (quote_now)
 		putchar('"');
+	f->parastate = PARA_MID;
 }
 
 void
@@ -212,7 +246,11 @@ macro_nodeline(struct format *f, const char *name, str
  * line otherwise.  The flag ARG_SPACE inserts spaces between words.
  */
 void
-print_text(struct format *f, const char *word, int flags) {
+print_text(struct format *f, const char *word, int flags)
+{
+	int	 ateos, inword;
+
+	para_check(f);
 	switch (f->linestate) {
 	case LINE_NEW:
 		break;
@@ -224,8 +262,61 @@ print_text(struct format *f, const char *word, int fla
 		macro_close(f);
 		break;
 	}
-	fputs(word, stdout);
+	if (f->linestate == LINE_NEW && (*word == '.' || *word == '\''))
+		fputs("\\&", stdout);
+	ateos = inword = 0;
+	while (*word != '\0') {
+		if (f->nofill == 0) {
+			switch (*word) {
+			case ' ':
+				if (ateos == 0) {
+					inword = 0;
+					break;
+				}
+				ateos = inword = 0;
+				/* Handle the end of a sentence. */
+				while (*word == ' ')
+					word++;
+				switch (*word) {
+				case '\0':
+					break;
+				case '\'':
+				case '.':
+					fputs("\n\\&", stdout);
+					break;
+				default:
+					putchar('\n');
+					break;
+				}
+				continue;
+			/* Detect the end of a sentence. */
+			case '!':
+			case '.':
+			case '?':
+				if (inword > 1 &&
+				    (word[-2] != 'n' || word[-1] != 'c') &&
+				    (word[-2] != 'v' || word[-1] != 's'))
+					ateos = 1;
+				/* FALLTHROUGH */
+			case '"':
+			case '\'':
+			case ')':
+			case ']':
+				inword = 0;
+				break;
+			default:
+				if (isalnum((unsigned char)*word))
+					inword++;
+				ateos = 0;
+				break;
+			}
+		}
+		putchar(*word);
+		if (*word++ == '\\')
+			putchar('e');
+	}
 	f->linestate = LINE_TEXT;
+	f->parastate = PARA_MID;
 	f->flags = 0;
 }