[cmd] Fix sort of boundaries in solutions

command_line/cadbiom_cmd/solution_search.py

@@ -330,10 +330,10 @@ def find_mac(mcla,
             next_mac_object.save(file)
 
         # Save MAC (in alphabetic order...)
-        next_mac = sorted(next_mac_object.activated_frontier)
+        next_mac = sorted(next_mac_object.activated_frontier, key=lambda s: s.lower())
         LOGGER.debug("%s:: Save next MAC: %s", final_prop, next_mac)
         with open(mac_file, 'a') as file:
-            file.write(" ".join(sorted(next_mac, key=lambda s: s.lower()))+'\n')
+            file.write(" ".join(next_mac) + '\n')
 
         # Save min steps
         min_step = mcla.unfolder.get_current_step() - 1 # Magic number !