[Flex-help] Are Mulitple EOF's allowed

[Arthur S. <asc...@at...>]

The following code yields the following comment:


"gumdrop.lex:9: multiple <<EOF>> rules for start condition EOLCOMMENT"

If <EOLCOMMENT><<EOF>> is placed outside of the 

<EOLCOMMENT>{ scope the same error message is
given.

Is there any way of using multiple <<EOF>> patterns?
Section 12 End-Of-File Rules says that this is 

possible. Is there anything wrong with my code?

I don't understand what I can do and without some
way of detecting <<EOF>> patterns I have problems
with multiple input buffers/files since restoring
a lexer environment retains the last lexer state
if an included files. Therefore, returning to a
previous environment starts with the last state
of the replaced environment. If the replaced
file contains an unterminating, e.g., string or
comment, then returning to a previous environment
continues trying to detect a string or comment or
etc. This leads to some issues for me.

Do I have to use a kludge and always return to 

INITIAL when I restore an environment, and how
can I do that?

art



-------------- code --------------
%x EOLCOMMENT

%%
<<EOF>>   return 0;

<EOLCOMMENT>{
.** 
\n
<<EOF>> BEGIN(INITIAL);
}  /* <EOLCOMMENT> */