Make the "new sentence, new line" check stricter, allowing digits

in the last two letters of the last word of the sentence.
No false positives in base or Xenocara.
Suggested by and OK jmc@.

1 files changed, 3 insertions, 3 deletions

diff --git a/mdoc.c b/mdoc.c
index 7afcc5d2..71803531 100644
--- a/mdoc.c
+++ b/mdoc.c
@@ -1,4 +1,4 @@
-/*	$Id: mdoc.c,v 1.267 2017/06/17 13:06:16 schwarze Exp $ */
+/*	$Id: mdoc.c,v 1.268 2017/08/11 16:56:21 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010, 2012-2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -297,8 +297,8 @@ mdoc_ptext(struct roff_man *mdoc, int line, char *buf, int offs)
 		if (end - c < 3)
 			break;
 		if (c[1] != ' ' ||
-		    isalpha((unsigned char)c[-2]) == 0 ||
-		    isalpha((unsigned char)c[-1]) == 0 ||
+		    isalnum((unsigned char)c[-2]) == 0 ||
+		    isalnum((unsigned char)c[-1]) == 0 ||
 		    (c[-2] == 'n' && c[-1] == 'c') ||
 		    (c[-2] == 'v' && c[-1] == 's'))
 			continue;