[Bug-tar] special character in filename problem ... tar (GNU tar) 1.13.25

[Rudolf Potucek]

Hi!

As per subject, I am trying to use tar (GNU tar) 1.13.25 for backup 
purposes on a filesystem that may contain filenames with special 
characters (Windoze style). The problem I am running into is this:    

   tar -cC source-dir source-file | tar -xC dest-dir source-file

fails if the filename contains '[' or ']' ... which would not be so bad 
... it's just and escaping issue, right? Unfortunetaly, this works:

# tar -cC /home/potucek/ 
safe/misc/rccalcs4/r\(\[r\(rc\)\]\[\(rc\)\]\)-100-50.z | tar -xC 
/mnt/archos-ext/potucek/ 
safe/misc/rccalcs4/r\(\\\[r\(rc\)\\\]\\\[\(rc\)\\\]\)-100-50.z

while this does not:

# tar -cC /home/potucek/ 
safe/misc/rccalcs4/r\(\[r\(rc\)\]\[\(rc\)\]\)-100-50.z | tar -xC 
/mnt/archos-ext/potucek/ 
safe/misc/rccalcs4/r\(\[r\(rc\)\]\[\(rc\)\]\)-100-50.z
tar: safe/misc/rccalcs4/r([r(rc)][(rc)])-100-50.z: Not found in archive

even though a tar -t will list the file as present ... notice the 
inconsistency between the 'create' and 'extract' escaping ... very 
confusing ... I would call that a bug!

 Rudolf