[Bug] pdfjam-pocketmod: pdfjam ERROR: --outfile cannot be a directory when input is stdin

[Wikinaut]

bph.pdf is an eight-page pdf.

./pdfjam-pocketmod bph.pdf 
          ----
  pdfjam: This is pdfjam version 3.11.
  pdfjam: Reading any site-wide or user-specific defaults...
          (none found)
  pdfjam: Effective call for this run of pdfjam:
          /usr/bin/pdfjam --outfile /dev/stdout -- bph.pdf 1-8 
  pdfjam: Calling /usr/bin/pdflatex...
  pdfjam: Finished.  Output was written to '/dev/stdout'.
          ----
  pdfjam: This is pdfjam version 3.11.
  pdfjam: Reading any site-wide or user-specific defaults...
          (none found)
  pdfjam: Effective call for this run of pdfjam:
          /usr/bin/pdfjam --angle '180' --outfile /dev/stdout -- /dev/stdin 1,8,7,6 
  pdfjam: Calling /usr/bin/pdflatex...
  pdfjam: Finished.  Output was written to '/dev/stdout'.
          ----
  pdfjam: This is pdfjam version 3.11.
  pdfjam: Reading any site-wide or user-specific defaults...
          (none found)
  pdfjam: Effective call for this run of pdfjam:
          /usr/bin/pdfjam --nup '4x2' --landscape --frame 'true' -- bph.pdf 2-5 /dev/stdin - 
  pdfjam: Calling /usr/bin/pdflatex...
  pdfjam ERROR: --outfile cannot be a directory when input is stdin