2.2 changes

diff --git a/NEWS b/NEWS
index e62f1c57ad67cd932078765784ecebd7dd967a45..08e91089cafb6e4848fc2430974ec21cab09cc05 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,87 @@
+Changes between 2.2 (alpha) release of March '90 and previous release:
+
+    User-visible:
+
+       - Full user documentation now available.
+
+       - Support for 8-bit scanners.
+
+       - Scanners now accept NUL's.
+
+       - A facility has been added for dealing with multiple
+         input buffers.
+
+       - Two manual entries now.  One which fully describes flex
+         (rather than just its differences from lex), and the
+         other for quick(er) reference.
+
+       - A number of changes to bring flex closer into compliance
+         with the latest POSIX lex draft:
+
+               %t support
+               flex now accepts multiple input files and concatenates
+                   them together to form its input
+               previous -c (compress) flag renamed -C
+               do-nothing -c and -n flags added
+               Any indented code or code within %{}'s in section 2 is
+                   now copied to the output
+
+       - yyleng is now a bona fide global integer.
+
+       - -d debug information now gives the line number of the
+         matched rule instead of which number rule it was from
+         the beginning of the file.
+
+       - -v output now includes a summary of the flags used to generate
+         the scanner.
+
+       - unput() and yyrestart() are now globally callable.
+
+       - yyrestart() no longer closes the previous value of yyin.
+
+       - C++ support; generated scanners can be compiled with C++ compiler.
+
+       - Primitive -lfl library added, containing default main()
+         which calls yylex().  A number of routines currently living
+         in the scanner skeleton will probably migrate to here
+         in the future (in particular, yywrap() will probably cease
+         to be a macro and instead be a function in the -lfl library).
+
+       - Hexadecimal (\x) escape sequences added.
+
+       - Support for MS-DOS, VMS, and Turbo-C integrated.
+
+       - The %used/%unused operators have been deprecated.  They
+         may go away soon.
+
+
+    Other changes:
+
+       - Makefile enhanced for easier testing and installation.
+       - The parser has been tweaked to detect some erroneous
+         constructions which previously were missed.
+       - Scanner input buffer overflow is now detected.
+       - Bugs with missing "const" declarations fixed.
+       - Out-of-date Minix/Atari patches provided.
+       - Scanners no longer require printf() unless FLEX_DEBUG is being used.
+       - A subtle input() bug has been fixed.
+       - Line numbers for "continued action" rules (those following
+         the special '|' action) are now correct.
+       - unput() bug fixed; had been causing problems porting flex to VMS.
+       - yymore() handling rewritten to fix bug with interaction
+         between yymore() and trailing context.
+       - EOF in actions now generates an error message.
+       - Bug involving -CFe and generating equivalence classes fixed.
+       - Bug which made -CF be treated as -Cf fixed.
+       - Support for SysV tmpnam() added.
+       - Unused #define's for scanner no longer generated.
+       - Error messages which are associated with a particular input
+         line are now all identified with their input line in standard
+         format.
+       - % directives which are valid to lex but not to flex are
+         now ignored instead of generating warnings.
+
+
 Changes between 2.1 beta-test release of June '89 and previous release:
 
     User-visible:
@@ -88,17 +172,10 @@ Changes between 2.1 beta-test release of June '89 and previous release:
          trimmed to be 31 or fewer characters.  Shortened file names
          for dinosaur OS's.  Checks for allocating > 64K memory
          on 16 bit'ers.  Amiga tweaks.  Compiles using gcc on a Sun-3.
-
        - Compressed and fast scanner skeletons merged.
-
        - Skeleton header files done away with.
-
        - Generated scanner uses prototypes and "const" for __STDC__.
-
        - -DSV flag is now -DSYS_V for System V compilation.
-
        - Removed all references to FTL language.
-
        - Software now covered by BSD Copyright.
-
        - flex will replace lex in subsequent BSD releases.