Also catch "new sentence, new line" if there are three blanks

between the sentences.  Thomas Klausner says he has seen some
of these, and i don't see any false positives.

diff --git a/usr.bin/mandoc/mdoc.c b/usr.bin/mandoc/mdoc.c
index a788941..bc0ec42 100644 (file)
--- a/usr.bin/mandoc/mdoc.c
+++ b/usr.bin/mandoc/mdoc.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: mdoc.c,v 1.154 2017/06/07 20:30:13 schwarze Exp $ */
+/*     $OpenBSD: mdoc.c,v 1.155 2017/06/07 20:58:36 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010, 2012-2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -278,12 +278,18 @@ mdoc_ptext(struct roff_man *mdoc, int line, char *buf, int offs)
                        continue;
                if (end - c < 3)
                        break;
-               if (isalpha((unsigned char)c[-2]) &&
-                   isalpha((unsigned char)c[-1]) &&
-                   c[1] == ' ' &&
-                   isupper((unsigned char)(c[2] == ' ' ? c[3] : c[2])) &&
-                   (c[-2] != 'n' || c[-1] != 'c') &&
-                   (c[-2] != 'v' || c[-1] != 's'))
+               if (c[1] != ' ' ||
+                   isalpha((unsigned char)c[-2]) == 0 ||
+                   isalpha((unsigned char)c[-1]) == 0 ||
+                   (c[-2] == 'n' && c[-1] == 'c') ||
+                   (c[-2] == 'v' && c[-1] == 's'))
+                       continue;
+               c += 2;
+               if (*c == ' ')
+                       c++;
+               if (*c == ' ')
+                       c++;
+               if (isupper((unsigned char)(*c)))
                        mandoc_msg(MANDOCERR_EOS, mdoc->parse,
                            line, (int)(c - buf), NULL);
        }