1 files changed, 16 insertions, 0 deletions
diff --git a/src/cmd/bzip2/bzip2.c b/src/cmd/bzip2/bzip2.c
index 17c2d06d..e7ac9953 100644
--- a/src/cmd/bzip2/bzip2.c
+++ b/src/cmd/bzip2/bzip2.c
@@ -23,7 +23,9 @@ void
 main(int argc, char **argv)
 {
 	int i, ok, stdout;
+	char **oargv;
 
+	oargv = argv;
 	level = 6;
 	stdout = 0;
 	ARGBEGIN{
@@ -36,6 +38,20 @@ main(int argc, char **argv)
 	case 'c':
 		stdout++;
 		break;
+	case 'd':
+		/*
+		 * gnu tar expects bzip2 -d to decompress
+		 * humor it.  ugh.
+		 */
+		/* remove -d from command line - magic! */
+		if(strcmp(argv[0], "-d") == 0){
+			while(*argv++)
+				*(argv-1) = *argv;
+		}else
+			memmove(_args-1, _args, strlen(_args)+1);
+		exec("bunzip2", oargv);
+		sysfatal("exec bunzip2 failed");
+		break;
 	case '1': case '2': case '3': case '4':
 	case '5': case '6': case '7': case '8': case '9':
 		level = ARGC() - '0';