From:	pjfarley AT banet DOT net (Peter J. Farley III)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Flex 2.5.4 patch for redefining input() and/or unput()
Date:	Fri, 31 Mar 2000 03:00:37 GMT
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To:	djgpp AT delorie DOT com
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Eli,

Below is a patch for the Flex 2.5.4 skeleton code to allow the input()
function to be undefined just as the unput() function can be
undefined.  The package has to be re-built to include the change.

Flex allows the input() and/or unput() functions to be undefined (or
more correctly, not defined at all) so that the user can define their
own, by using a compile-time flag (-DYY_NO_INPUT and/or
-DYY_NO_UNPUT).  The flex skeleton correctly tests YY_NO_UNPUT, but it
looks like the corresponding test was omitted for YY_NO_INPUT.

I will also submit this to the gnu bugs list, but I'm posting it here
so that DJGPP users can apply it sooner than the next release, if they
want or need to do so.

<==============flexskl.dif=========================>
*** flex.sk0	Wed Sep 11 02:58:54 1996
--- flex.skl	Wed Mar 29 21:39:56 2000
***************
*** 970,975 ****
--- 970,976 ----
  
  
  %-
+ #ifndef YY_NO_INPUT
  #ifdef __cplusplus
  static int yyinput()
  #else
***************
*** 1045,1050 ****
--- 1046,1054 ----
  
  	return c;
  	}
+ %-
+ #endif	/* ifndef YY_NO_INPUT */
+ %*
  
  
  %-
<==============flexskl.dif=========================>


----------------------------------------------------
Peter J. Farley III (pjfarley AT nospam DOT dorsai DOT org OR
                     pjfarley AT nospam DOT banet DOT net)

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