[Flex-help] [suggestion] Include a means to put items in the header file.

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

Flex 2.6.4

I've looked at the Flex manual and I can't seem to find any way of 
inserting anything into the output header file. It would be useful to 
allow an option to put things into the header file.

Let me give an example. I have a bison parser using Flex. In the parser 
I detect an include statement (similar to a #include) which requires 
that activity in the current file be suspended, the data relevant to the 
current process be stacked, and a new one opened and processed. Flex 
provides a mechanism to do this. I would like to provide my own 
interface to the Flex functions to the Bison parser. There is no way to 
do this other than to hand code the function prototype. This hand coding 
is something that Flex can do if there were a means to insert a function 
prototype into the Flex generated header file.