Changes to m4/NEWS,v [branch-1_4]

[Eric Blake]

CVSROOT:        /sources/m4
Module name:    m4
Branch:         branch-1_4
Changes by:     Eric Blake <ericb>      06/06/22 23:17:22

Index: NEWS
===================================================================
RCS file: /sources/m4/m4/NEWS,v
retrieving revision 1.1.1.1.2.23
retrieving revision 1.1.1.1.2.24
diff -u -b -r1.1.1.1.2.23 -r1.1.1.1.2.24
--- NEWS        22 Jun 2006 14:55:48 -0000      1.1.1.1.2.23
+++ NEWS        22 Jun 2006 23:17:21 -0000      1.1.1.1.2.24
@@ -8,6 +8,13 @@
   in the low-order byte.
 * The maketemp macro is no longer subject to platform limitations (such as
   26 or 32 max files from a given template).
+* Frozen files now require that the first directive be V (version), to
+  better diagnose version mismatch.  Additionally, if the F directive
+  (builtin function) names an unknown builtin that existed in the m4 that
+  froze the file but not in the current m4 (for example, changeword), the
+  warning is deferred until an attempt is made to actually use the builtin.
+  This allows downgrading from beta m4-1.4o to m4-1.4.5 without breaking
+  autoconf.
 
 Version 1.4.4b - 17 June 2006, by Eric Blake  (CVS version 1.4.4a)