- Prevent false matches when DFA is disabled (bug #138558).

grep-2.5.1-dfa-optional.patch

@@ -1,5 +1,5 @@
---- grep-2.5.1/src/search.c.dfa-optional	2004-11-07 20:04:26.181494244 +0000
-+++ grep-2.5.1/src/search.c	2004-11-07 20:11:07.437866925 +0000
+--- grep-2.5.1/src/search.c	2004-11-07 20:11:07.437866925 +0000
++++ grep-2.5.1/src/search.c	2004-11-10 09:40:44.994750111 +0000
 @@ -305,11 +305,33 @@
    int backref, start, len;
    struct kwsmatch kwsm;
@@ -55,6 +55,15 @@
  	      if (offset == (size_t) -1)
  		break;
  	      /* Narrow down to the line we've found. */
+@@ -416,7 +441,7 @@
+ 		--beg;
+ 	    }
+ 	  /* Successful, no backreferences encountered! */
+-	  if (!backref)
++	  if (use_dfa && !backref)
+ 	    goto success_in_beg_and_end;
+ 	}
+       else
 @@ -450,7 +475,11 @@
  		    if ((start == 0 || !WCHAR ((unsigned char) beg[start - 1]))
  			&& (len == end - beg - 1

grep.spec

@@ -83,6 +83,9 @@ fi
 %{_mandir}/*/*
 
 %changelog
+* Wed Nov 10 2004 Tim Waugh <twaugh@redhat.com>
+- Prevent false matches when DFA is disabled (bug #138558).
+
 * Mon Nov  8 2004 Tim Waugh <twaugh@redhat.com> 2.5.1-36
 - Automatically disable DFA when processing multibyte input.  GREP_USE_DFA
   environment variable overrides.