Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

===================================================================
RCS file: /ftp/cvs/cvsroot/src/lib/libc/gen/glob.c,v
retrieving revision 1.18
retrieving revision 1.18.8.2
diff -u -p -r1.18 -r1.18.8.2
--- src/lib/libc/gen/glob.c	2006/12/01 18:57:29	1.18
+++ src/lib/libc/gen/glob.c	2008/03/23 00:40:25	1.18.8.2
@@ -1,4 +1,4 @@
-/*	$NetBSD: glob.c,v 1.18 2006/12/01 18:57:29 christos Exp $	*/
+/*	glob.c,v 1.18.8.1 2008/01/09 01:34:05 matt Exp	*/
 
 /*
  * Copyright (c) 1989, 1993
@@ -37,7 +37,7 @@
 #if 0
 static char sccsid[] = "@(#)glob.c	8.3 (Berkeley) 10/13/93";
 #else
-__RCSID("$NetBSD: glob.c,v 1.18 2006/12/01 18:57:29 christos Exp $");
+__RCSID("glob.c,v 1.18.8.1 2008/01/09 01:34:05 matt Exp");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -59,6 +59,10 @@ __RCSID("$NetBSD: glob.c,v 1.18 2006/12/
  *	expand ~user/foo to the /home/dir/of/user/foo
  * GLOB_BRACE:
  *	expand {1,2}{a,b} to 1a 1b 2a 2b 
+ * GLOB_PERIOD:
+ *	allow metacharacters to match leading dots in filenames.
+ * GLOB_NO_DOTDIRS:
+ *	. and .. are hidden from wildcards, even if GLOB_PERIOD is set.
  * gl_matchc:
  *	Number of matches in the current invocation of glob.
  */
@@ -74,6 +78,7 @@ __RCSID("$NetBSD: glob.c,v 1.18 2006/12/
 #include <glob.h>
 #include <pwd.h>
 #include <stdio.h>
+#include <stddef.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
@@ -582,6 +587,8 @@ glob2(Char *pathbuf, Char *pathend, Char
 	__gl_stat_t sb;
 	Char *p, *q;
 	int anymeta;
+	Char *pend;
+	ptrdiff_t diff;
 
 	_DIAGASSERT(pathbuf != NULL);
 	_DIAGASSERT(pathend != NULL);
@@ -623,7 +630,26 @@ glob2(Char *pathbuf, Char *pathend, Char
 			*q++ = *p++;
 		}
 
-		if (!anymeta) {		/* No expansion, do next segment. */
+                /*
+		 * No expansion, or path ends in slash-dot shash-dot-dot,
+		 * do next segment.
+		 */
+		if (pglob->gl_flags & GLOB_PERIOD) {
+			for (pend = pathend; pend > pathbuf && pend[-1] == '/';
+			    pend--)
+				continue;
+			diff = pend - pathbuf;
+		} else {
+			/* XXX: GCC */
+			diff = 0;
+			pend = pathend;
+		}
+			
+                if ((!anymeta) ||
+		    ((pglob->gl_flags & GLOB_PERIOD) &&
+		     (diff >= 1 && pend[-1] == DOT) &&
+		     (diff >= 2 && (pend[-2] == SLASH || pend[-2] == DOT)) &&
+		     (diff < 3 || pend[-3] == SLASH))) {
 			pathend = q;
 			pattern = p;
 			while (*pattern == SEP) {
@@ -695,8 +721,20 @@ glob3(Char *pathbuf, Char *pathend, Char
 		u_char *sc;
 		Char *dc;
 
-		/* Initial DOT must be matched literally. */
-		if (dp->d_name[0] == DOT && *pattern != DOT)
+		/*
+		 * Initial DOT must be matched literally, unless we have
+		 * GLOB_PERIOD set.
+		 */
+		if ((pglob->gl_flags & GLOB_PERIOD) == 0)
+			if (dp->d_name[0] == DOT && *pattern != DOT)
+				continue;
+		/*
+		 * If GLOB_NO_DOTDIRS is set, . and .. vanish.
+		 */
+		if ((pglob->gl_flags & GLOB_NO_DOTDIRS) &&
+		    (dp->d_name[0] == DOT) &&
+		    ((dp->d_name[1] == EOS) ||
+		     ((dp->d_name[1] == DOT) && (dp->d_name[2] == EOS))))
 			continue;
 		/*
 		 * The resulting string contains EOS, so we can