30 	"""Takes a T2CharString program list and returns list of commands.
37 	commands = []
52 				commands.append(('', [width]))
56 				commands.append(('', stack))
57 			commands.append((token, []))
58 			commands.append(('', [next(it)]))
60 			commands.append((token,stack))
63 		commands.append(('', stack))
64 	return commands
67 def commandsToProgram(commands):  argument
68 	"""Takes a commands list as returned by programToCommands() and converts
71 	for op,args in commands:
207 def generalizeCommands(commands, ignoreErrors=False):  argument
210 	for op,args in commands:
220 				# Store op as data, such that consumers of commands do not have to
270 def specializeCommands(commands,  argument
278 	# 0. Generalize commands.
307 	# 0. Generalize commands.
309 		commands = generalizeCommands(commands, ignoreErrors=ignoreErrors)
311 		commands = list(commands) # Make copy since we modify in-place later.
314 	for i in range(len(commands)-1, 0, -1):
315 		if 'rmoveto' == commands[i][0] == commands[i-1][0]:
316 			v1, v2 = commands[i-1][1], commands[i][1]
317 			commands[i-1] = ('rmoveto', [v1[0]+v2[0], v1[1]+v2[1]])
318 			del commands[i]
366 	for i in range(len(commands)):
367 		op,args = commands[i]
371 			commands[i] = c+op[1:], args
377 			commands[i] = c1+c2+'curveto', args1+args[2:4]+args2
403 		for i in range(len(commands)-1, -1, -1):
404 			op, args = commands[i]
411 				commands[i] = op, args
416 				del commands[i]
421 					(op == commands[i-1][0]) and
423 				_, other_args = commands[i-1]
425 				commands[i-1] = (op, [other_args[0]+args[0]])
426 				del commands[i]
431 	for i in range(1, len(commands)-1):
432 		op,args = commands[i]
433 		prv,nxt = commands[i-1][0], commands[i+1][0]
438 			commands[i] = ('rlineto', args)
453 			commands[i] = ('rrcurveto', args)
457 	for i in range(len(commands)-1, 0, -1):
458 		op1,args1 = commands[i-1]
459 		op2,args2 = commands[i]
503 			commands[i-1] = (new_op, args1+args2)
504 			del commands[i]
507 	for i in range(len(commands)):
508 		op,args = commands[i]
511 			commands[i] = 'h'+op[1:], args
534 			commands[i] = op0+op1+'curveto', args
537 	return commands
550 	commands = programToCommands(program)  variable
551 	print("Commands:"); print(commands)
552 	program2 = commandsToProgram(commands)
553 	print("Program from commands:"); print(programToString(program2))