Properly indent even if the indenting character isn't the last one

Properly indent even if the indenting character isn't the last one

For all languages, this change allows comments at the end of the
checked line, e.g.:

	if 42:  # magic number
		print("I'm indented!")

For languages with braces, it also properly indent if there is code
on the same line as the opening brace, e.g.:

	if (42) { printf("some code here...");
		printf("...but I'm properly indented");
	} else { /* comment! */
		printf("normal block is fine too, of course");
	}

Although this is uncommon (and quite ugly) it's valid and should be
handled properly.