diff 2.8.7 -yB bug

[Ian! D. Allen]

Diff misbehaves when using options "-yB".  See the last output below:

$ diff --version
diff (GNU diffutils) 2.8.7
Written by Paul Eggert, Mike Haertel, David Hayes,
Richard Stallman, and Len Tower.

Copyright (C) 2004 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ rpm -q diffutils
diffutils-2.8.7-3mdk

# *** THIS IS CORRECT OUTPUT
$ diff -u a b
--- a   2006-02-12 19:49:37.000000000 -0500
+++ b   2006-02-12 19:49:43.000000000 -0500
@@ -1,8 +1,6 @@
 xxx
 yyy
 zzz
-
 aaa
 bbb
 ccc
-

# *** THIS IS CORRECT OUTPUT
$ diff -uB a b

# *** THIS IS CORRECT OUTPUT
$ diff a b
4d3
< 
8d6
< 

# *** THIS IS CORRECT OUTPUT
$ diff -B a b

# *** THIS IS CORRECT OUTPUT
$ diff -y a b
xxx                                                             xxx
yyy                                                             yyy
zzz                                                             zzz
                                                              <
aaa                                                             aaa
bbb                                                             bbb
ccc                                                             ccc
                                                              <

# *** THIS OUTPUT FROM -yB IS VERY WRONG ***
$ diff -yB a b
xxx                                                             xxx
yyy                                                             yyy
zzz                                                             zzz
                                                                aaa
aaa                                                             bbb
bbb                                                             ccc
ccc                                                           (
                                                              (

# *** THE CORRECT OUTPUT FOR -yB SHOULD LOOK LIKE THIS ***
$ diff -yB a b
xxx                                                             xxx
yyy                                                             yyy
zzz                                                             zzz
                                                              (
aaa                                                             aaa
bbb                                                             bbb
ccc                                                             ccc
                                                              (

-- 
-IAN!  Ian! D. Allen       Ottawa, Ontario, Canada - www.ottawa.ca
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