--DETAB - by Les Kneeling--
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     TAB22 was written in response to the ST User 22 line challenge. Since one
of the  requirements for files to reproduce properly in the magazine is that 
they have no tabs in them, it seemed reasonable to produce a program that 
removes them. DETAB is a slightly less cryptic version (which doesn't fit into
22 lines).

     Of course it would not be sufficient to simply replace each occurrence of
a tab character (0x09) with say four spaces. This would result in a ragged 
listing. What is actually needed is to replace the character with the required
number of spaces to move the cursor to the next tab column. The program does
this by working out how far the character is from the last tab column using
current_column%tabsize. It then outputs the spaces needed to reach the next
tab column, tabsize - current_column%tabsize. The listing as it stands has a
fixed tab size of 4, which strangely enough is what I use, although it would
be simple to modify it - I would suggest that you restore it to a more normal
state by making it one statement per line first.

     The program is called from the desktop by double clicking on the icon and
supplying INPUT.EXT OUTPUT.EXT when requested. There is sufficient error
trapping in the program for most cases, but you must ensure that the input and
output files have different names.