set-filename / use-embedded-filename

[Atom Smasher]

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Hash: SHA256

does the embedded file name info only apply to encrypted (and stored) 
data, but not signed data? in the rfc (2440:5.9) i don't see where it 
shouldn't apply to signed files.

verifying a signed file with "-v" i always see this line:
  	gpg: original file name=''
even if i use "--set-filename" when creating a signature.


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   762A 3B98 A3C3 96C9 C6B7 582A B88D 52E4 D9F5 7808
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Version: GnuPG v1.4.0 (FreeBSD)
Comment: What is this gibberish?
Comment: http://atom.smasher.org/links/#digital_signatures

iQEcBAEBCAAGBQJCDSLcAAoJEAx/d+cTpVciLcMH/3/Gna0AqXQ92QWJQLeItuA+
C+eyhtV9LOH5XUoSjEw/zy426ID3RPiX3pKdT4glGtTetQ5+kCbLE7KWAwRueIDM
GciW9FNodfFbKYGM5K6wQU4pXNAzsOzEX1iAy0+imWg1kLQkRLMar771NQbrWdmX
aftYi4kLuOTElcZNbA2yMt5+cZGGi5Zic8Pz+nEBgUhJLdFx6Hu5VL7+vIlqH6Os
3DDNBTfZ7kfRGZYGSz0bMECq2LnFdXGNNY+rQb3tc+jTxk3LX+GgCWx6gNrQhfg+
5un/aeBBd5TAtM9J1fIRkd9DoS86a4IOA9DhcI+QGv1NnJUq4G/d3ugMX03Jxaw=
=2tzV
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