fix for bug #27799: fix for nested-nested-nested variations

[xboard.git] / parser.l

diff --git a/parser.l b/parser.l
index 77837a7..7e42f8a 100755 (executable)
--- a/parser.l
+++ b/parser.l
@@ -9,9 +9,10 @@
  * parser.l -- lex parser of algebraic chess moves for XBoard\r
  *\r
  * Copyright 1991 by Digital Equipment Corporation, Maynard,\r
- * Massachusetts.  Enhancements Copyright\r
- * 1992-2001,2002,2003,2004,2005,2006,2007,2008,2009 Free Software\r
- * Foundation, Inc.\r
+ * Massachusetts.\r
+ *\r
+ * Enhancements Copyright 1992-2001, 2002, 2003, 2004, 2005,\r
+ * 2006, 2007, 2008, 2009 Free Software Foundation, Inc.\r
  *\r
  * The following terms apply to Digital Equipment Corporation's copyright\r
  * interest in XBoard:\r
@@ -918,7 +919,7 @@ extern void CopyBoard P((Board to, Board from));
     return (int) Comment; \r
 }\r
 \r
-\([^()]*(\([^()]*\)[^()]*)+[^()]*\)  {                 /* nested () */\r
+\([^()]*(\([^()]*(\([^()]*(\([^()]*\)[^()]*)*\)[^()]*)*\)[^()]*)+[^()]*\)  { /* very nested () */\r
     return (int) Comment; \r
 }\r
 \r