> How can this be true? By magic, or the will of Knuth, or something. > What happens if a command in the middle of a line changes the catcodes makes no difference: the notion of line for the input buffer is hardwired into the implementation it is not changable via TeX commands and does not depend on catcodes or the value of \endlinechar. > or contains a macro that expands to a \input <filename>? The rest of the line of the original file sits buffered in one of those input streams until the input file finishes. Incidentally one reason why xmltex can not support utf16 is that TeX buffers to ^J (or ^M) and throws away any bytes with value 32 that occur at the end of this buffer, which might just be half of a 16bit quantity that you'd rather keep. there's no way to control this behaviour from within TeX. David _____________________________________________________________________ This message has been checked for all known viruses by Star Internet delivered through the MessageLabs Virus Control Centre. For further information visit http://www.star.net.uk/stats.asp