add more options to pre and post punc

Author: Tomotz

lang/usenglish/usenglish.c

@@ -42,8 +42,8 @@
 #include "us_text.h"
 #include "us_ffeatures.h"
 
-static const char * const us_english_punctuation = "\"'`.,:;!?(){}[]";
-static const char * const us_english_prepunctuation = "\"'`({[";
+static const char * const us_english_punctuation = "\"'`.,:;!?(){}[]-_*/+#$%^&";
+static const char * const us_english_prepunctuation = "\"'`.,:;!?(){}[]-_*/+#$%^&";
 static const char * const us_english_singlecharsymbols = "";
 static const char * const us_english_whitespace = " \t\n\r";