Swap syntaxes

alphabetseq

@@ -32,9 +32,9 @@ def convert_start_stop(s, alphabet):
 	if ':' in s:
 		valalphabet, value = s.split(':')
 		if not valalphabet:
-			valalphabet = alphabet
+			valalphabet = '0123456789'
 	else:
-		valalphabet, value = '0123456789', s
+		valalphabet, value = alphabet, s
 	return alphabet_to_decimal(value, valalphabet)
 
 
@@ -60,6 +60,6 @@ if __name__ == '__main__':
 		print('Generates the sequence from START to STOP (inclusive) using ALPHABET', file = sys.stderr)
 		print('If STOP is omitted, it defaults to START, effectively making this a simple base transformation', file = sys.stderr)
 		print('START and STOP have values of the form [[VALALPHABET]:]VALUE.', file = sys.stderr)
-		print('  In the [VALALPHABET]:VALUE form, VALUE is expressed in terms of VALALPHABET, which defaults to ALPHABET if omitted.', file = sys.stderr)
-		print('  In the VALUE form, it is treated as a decimal number.', file = sys.stderr)
+		print('  In the [VALALPHABET]:VALUE form, VALUE is expressed in terms of VALALPHABET, which defaults to 0123456789 (i.e. decimal) if omitted.', file = sys.stderr)
+		print('  In the VALUE form, it is converted using ALPHABET.', file = sys.stderr)
 		sys.exit(1)