Hello,<br><br>I was unable to locate change files for Knuth&#39;s original TANGLE and CWEAVE<br>programs on CTAN, so I&#39;ve written a port of the system for the gpc version<br>20060325. <br><br>I reverted the file I/O in Knuth&#39;s code that he ported to C back to GNU Pascal. 
<br>I might have preserved Knuth's I/O routines in C, except that GNU
Pascal <br>changed the way it makes file structures available to the
programmer since<br>Knuth wrote his port (around 2000). The GNU PASCAL function GetFile() might <br>have been used to pass a
C-style FILE pointer to this code, but GetFile() is no <br>longer availble.
In its place, GNU PASCAL provides a BindingType data structure <br>and
related functions; these might have been usable if they had provided a
<br>valid file descriptor, but on my Debian Linux system, the value of BindingType.Handle <br>is always -1
(if I may abuse the PASCAL language by referring to a variable of
<br>BindingType by its type).<br><br>Am I mistaken about this?<br><br>Florian<br><br>P.S. I&#39;ve made the change files, the mysterious GPCtypes.h file and a modified<br>tangext.c file available at <br><br><a href="http://research.gc.cuny.edu/wiki/index.php/Port_of_Knuth%27s_TANGLE_and_WEAVE_to_GNU_Pascal_20060325">
http://research.gc.cuny.edu/wiki/index.php/Port_of_Knuth%27s_TANGLE_and_WEAVE_to_GNU_Pascal_20060325</a><br><br>