namelist2config: remove array slice syntax from variables

CHANGES.txt

@@ -17,7 +17,7 @@ Global
 * files2config: use '.' short-cut in file definitions,
   use global variables in directories
 * namelist2config: re-enable here-doc detection to remove spurious data,
-  use global variables in namelists and output
+  use global variables in namelists and output, remove array slice syntax
 * Fixes related to python3 and perl-5.26 compatibility
 * Added tools to find differences/similarities between config files
   (compconfig.py, diffconfig.py)

namelist2config

@@ -158,7 +158,7 @@ while(<>) {
             }
             next;
         }
-        elsif(/^\s*(.*?)\s*=\s*(.*?)(\s*!\s*(.*?))?\s*$/) {
+        elsif(/^\s*(.*?)(?:\(\d+:\d+\))?\s*=\s*(.*?)(\s*!\s*(.*?))?\s*$/) {
             if($open_value) {
                 $direct and print("\n");
             }