BUG: Fixed @ONLY configuration to not try to parse ${} syntax at all. This fixes the original fix to bug#4393 and adds a test.

Tests/StringFileTest/InputFile.h.in

@@ -5,6 +5,10 @@
 /* This should be configured to a commented undef with the curlies in place */
 #cmakedefine TEST_NOT_DEFINED ${TEST_NOT_DEFINED} 
 
+/* This complicated line should be configured unchanged: */
+static const char* configvar =
+"@$@$junk =~ s/#$xyz#/$foo_bar{$wibble}->{$xyz}/;@@";
+
 int CheckMethod(const char* var, const char* val )
 {
   if ( !var )

Tests/StringFileTest/StringFile.cxx

@@ -24,6 +24,8 @@ int main(int, char*[])
   res += CheckMethod(tuvar, "CMAKE");
   res += CheckMethod(tlvar, "cmake");
   res += CheckMethod(relpath, "../../X11R6/bin/xnest");
+  res += CheckMethod(configvar,
+                     "@$@$junk =~ s/#$xyz#/$foo_bar{$wibble}->{$xyz}/;@@");
   
   return res;
 }