[Flex-help] [suggestion] Change define/undef from the header file to the source file

[slipbits <ho...@sl...>]

Flex 2.6.4

In looking at the generated header file is looks like all the 
defines/undefs, except for YY_DECL, are local to and used only by the 
Flex generated source code. If that's the  case then is there any reason 
that they can not all be moved from the header file to the source file? 
That would ensure that the generated header file can be imported 
everywhere, including the flex generated source file. At the moment the 
header file can not be imported to the source file, and, except for 
YY_DECL, does not seem to contain anything useful for any other 
header/source file.