closingpunct() was testing the LS byte of the Rune rather than
utf8 when looking for known punctionation chars.

Reference: /n/sources/patch/applied/htmlfmt-whitespace
Date: Wed Sep 19 13:14:21 CES 2007
Signed-off-by: steve@quintile.net

--- /sys/src/cmd/htmlfmt/html.c	Wed Sep 19 13:12:50 2007
+++ /sys/src/cmd/htmlfmt/html.c	Wed Sep 19 13:12:47 2007
@@ -52,7 +52,7 @@
 }
 
 int
-closingpunct(int c)
+closingpunct(char c)
 {
 	return strchr(".,:;'\")]}>!?", c) != nil;
 }
@@ -66,7 +66,7 @@
 	if(nr == 0)
 		return;
 	s = smprint("%.*S", nr, r);
-	space = (b->n>0) && !isspace(b->b[b->n-1]) && !closingpunct(r[0]);
+	space = (b->n>0) && !isspace(b->b[b->n-1]) && !closingpunct(*s);
 	if(col>0 && col+space+nr > width){
 		growbytes(b, "\n", 1);
 		space = 0;