Small update

Author: Kazuki Suzuki Przyborowski

catfile.ini

@@ -1,5 +1,7 @@
 [config]
 usealt = false
+mainfmt = main
+altfmt = alt
 
 [main]
 len = 7

pycatfile.py

@@ -286,37 +286,39 @@ def get_default_threads():
     config = configparser.ConfigParser()
     config.read(__config_file__)
     __use_alt_format__ = config.getboolean('config', 'usealt')
+    main_fmt = config.get('config', 'mainfmt')
+    alt_fmt = config.get('config', 'altfmt')
     def decode_unicode_escape(value):
         if sys.version_info[0] < 3:  # Python 2
             return value.decode('unicode_escape')
         else:  # Python 3
             return bytes(value, 'UTF-8').decode('unicode_escape')
     if not __use_alt_format__:
-        __file_format_name__ = config.get('main', 'name')
-        __program_name__ = config.get('main', 'proname')
-        __file_format_lower__ = config.get('main', 'lower')
-        __file_format_magic__ = decode_unicode_escape(config.get('main', 'magic'))
-        __file_format_len__ = config.getint('main', 'len')
-        __file_format_hex__ = config.get('main', 'hex')
-        __file_format_delimiter__ = decode_unicode_escape(config.get('main', 'delimiter'))
-        __file_format_ver__ = config.get('main', 'ver')
-        __use_new_style__ = config.getboolean('main', 'newstyle')
-        __use_advanced_list__ = config.getboolean('main', 'advancedlist')
-        __use_alt_inode__ = config.getboolean('main', 'altinode')
-        __file_format_extension__ = config.get('main', 'extension')
+        __file_format_name__ = config.get(main_fmt, 'name')
+        __program_name__ = config.get(main_fmt, 'proname')
+        __file_format_lower__ = config.get(main_fmt, 'lower')
+        __file_format_magic__ = decode_unicode_escape(config.get(main_fmt, 'magic'))
+        __file_format_len__ = config.getint(main_fmt, 'len')
+        __file_format_hex__ = config.get(main_fmt, 'hex')
+        __file_format_delimiter__ = decode_unicode_escape(config.get(main_fmt, 'delimiter'))
+        __file_format_ver__ = config.get(main_fmt, 'ver')
+        __use_new_style__ = config.getboolean(main_fmt, 'newstyle')
+        __use_advanced_list__ = config.getboolean(main_fmt, 'advancedlist')
+        __use_alt_inode__ = config.getboolean(main_fmt, 'altinode')
+        __file_format_extension__ = config.get(main_fmt, 'extension')
     else:
-        __file_format_name__ = config.get('alt', 'name')
-        __program_name__ = config.get('alt', 'proname')
-        __file_format_lower__ = config.get('alt', 'lower')
-        __file_format_magic__ = decode_unicode_escape(config.get('alt', 'magic'))
-        __file_format_len__ = config.getint('alt', 'len')
-        __file_format_hex__ = config.get('alt', 'hex')
-        __file_format_delimiter__ = decode_unicode_escape(config.get('alt', 'delimiter'))
-        __file_format_ver__ = config.get('alt', 'ver')
-        __use_new_style__ = config.getboolean('alt', 'newstyle')
-        __use_advanced_list__ = config.getboolean('alt', 'advancedlist')
-        __use_alt_inode__ = config.getboolean('alt', 'altinode')
-        __file_format_extension__ = config.get('alt', 'extension')
+        __file_format_name__ = config.get(alt_fmt, 'name')
+        __program_name__ = config.get(alt_fmt, 'proname')
+        __file_format_lower__ = config.get(alt_fmt, 'lower')
+        __file_format_magic__ = decode_unicode_escape(config.get(alt_fmt, 'magic'))
+        __file_format_len__ = config.getint(alt_fmt, 'len')
+        __file_format_hex__ = config.get(alt_fmt, 'hex')
+        __file_format_delimiter__ = decode_unicode_escape(config.get(alt_fmt, 'delimiter'))
+        __file_format_ver__ = config.get(alt_fmt, 'ver')
+        __use_new_style__ = config.getboolean(alt_fmt, 'newstyle')
+        __use_advanced_list__ = config.getboolean(alt_fmt, 'advancedlist')
+        __use_alt_inode__ = config.getboolean(alt_fmt, 'altinode')
+        __file_format_extension__ = config.get(alt_fmt, 'extension')
 else:
     if not __use_alt_format__:
         # Format Info by Kazuki Przyborowski