Your bug report

#54443: 29.0.50; decipher.el: (wrong-type-argument bufferp nil) when calling decipher-digram-list (and others)

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 54443@debbugs.gnu.org.

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54443: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=54443
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