2002-10-11  Ruslan Ermilov  <ru@FreeBSD.org>

       * src/roff/troff/env.cc (hyphen_trie::read_patterns_file): Add
       cast to `unsigned char' to properly read patterns with 8bit
       characters.

--- groff-1.18.1/src/roff/troff/env.cc
+++ groff-1.18.1/src/roff/troff/env.cc
@@ -3924,7 +3924,7 @@
     if (i > 0) {
       if (have_patterns || final_pattern || traditional) {
 	for (int j = 0; j < i; j++)
-	  buf[j] = hpf_code_table[buf[j]];
+	  buf[j] = hpf_code_table[(unsigned char)buf[j]];
 	insert_pattern(buf, i, num);
 	final_pattern = 0;
       }