GNU Regex 0.12

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+This directory contains the GNU regex library.  It is compliant with
+POSIX.2, except for internationalization features.
+
+See the file NEWS for a list of major changes in the current release.
+
+See the file INSTALL for compilation instructions.  (The only thing
+installed is the documentation; regex.c is compiled into regex.o, but
+not installed anywhere.)
+
+The subdirectory `doc' contains a (programmers') manual for the library.
+It's probably out-of-date.  Improvements are welcome.
+
+The subdirectory `test' contains the various tests we've written.
+
+We know this code is not as fast as it might be.  If you have specific
+suggestions, profiling results, or other such useful information to
+report, please do.
+
+Emacs 18 is not going use this revised regex (but Emacs 19 will).  If
+you want to try it with Emacs 18, apply the patch at the end of this
+file first.
+
+Mail bug reports to bug-gnu-utils@prep.ai.mit.edu.
+
+Please include an actual regular expression that fails (and the syntax
+used to compile it); without that, there's no way to reproduce the bug,
+so there's no way we can fix it.  Even if you include a patch, also
+include the regular expression in error; otherwise, we can't know for
+sure what you're trying to fix.
+
+Here is the patch to make this version of regex work with Emacs 18.
+
+*** ORIG/search.c	Tue Jan  8 13:04:55 1991
+--- search.c	Sun Jan  5 10:57:00 1992
+***************
+*** 25,26 ****
+--- 25,28 ----
+  #include "commands.h"
++ 
++ #include <sys/types.h>
+  #include "regex.h"
+***************
+*** 477,479 ****
+  				/* really needed. */
+!       && *(searchbuf.buffer) == (char) exactn /* first item is "exact match" */
+        && searchbuf.buffer[1] + 2 == searchbuf.used) /*first is ONLY item */
+--- 479,482 ----
+  				/* really needed. */
+!          /* first item is "exact match" */
+!       && *(searchbuf.buffer) == (char) RE_EXACTN_VALUE
+        && searchbuf.buffer[1] + 2 == searchbuf.used) /*first is ONLY item */
+***************
+*** 1273,1275 ****
+    searchbuf.allocated = 100;
+!   searchbuf.buffer = (char *) malloc (searchbuf.allocated);
+    searchbuf.fastmap = search_fastmap;
+--- 1276,1278 ----
+    searchbuf.allocated = 100;
+!   searchbuf.buffer = (unsigned char *) malloc (searchbuf.allocated);
+    searchbuf.fastmap = search_fastmap;