New regexp search feature by Bill Soudan

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@78 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

utils.c

@@ -80,7 +80,12 @@ char *strcasestr(char *haystack, char *needle)
 
 char *strstrwrapper(char *haystack, char *needle)
 {
-
+    if (ISSET(USE_REGEXP)) {
+      int result=regexec(&search_regexp, haystack, 10, regmatches, 0);
+      if (!result)
+          return haystack+regmatches[0].rm_so;
+      return 0;
+    }  
     if (ISSET(CASE_SENSITIVE))
 	return strstr(haystack, needle);
     else