[Bug 1806856] Re: identify from imagemagick breaks with latest ghostscript 9.26

[Skully]

Hmm... have to revert that comment, restart on other machines did not do
the trick. Only downgrade to 9.18 seems to work for now.

The complete error message is:

identify: FailedToExecuteCommand `"gs" -q -dQUIET -dSAFER -dBATCH
-dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0
-dGridFitTT=2 "-sDEVICE=pngalpha" -dTextAlphaBits=4
-dGraphicsAlphaBits=4 "-r72x72" -dFirstPage=1 -dLastPage=1
"-sOutputFile=/tmp/magick-10621s1dvO7RspXlR%d" "-f/tmp/magick-
10621b5cDfJLDPwtD" "-f/tmp/magick-10621kH6YeBIlijBp"' (-1) @
error/delegate.c/ExternalDelegateCommand/461.

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Title:
  identify from imagemagick breaks with latest ghostscript 9.26

Status in ghostscript package in Ubuntu:
  Confirmed
Status in imagemagick package in Ubuntu:
  Confirmed

Bug description:
  Description: Ubuntu 16.04.5 LTS
  Release: 16.04

  imagemagick:
    Installed: 8:6.8.9.9-7ubuntu5.13
    Candidate: 8:6.8.9.9-7ubuntu5.13

  ghostscript:
    Installed: 9.26~dfsg+0-0ubuntu0.16.04.1
    Candidate: 9.26~dfsg+0-0ubuntu0.16.04.1

  Following command gives trouble:

  > identify -format '%wx%h,%[exif:orientation]' 'test.pdf[0]'

  which results in

  > identify: FailedToExecuteCommand `"gs" -q -dQUIET -dSAFER -dBATCH
  -dNOPAUSE -dNOPROMPT .....

  The commands:
  > identify -format '%wx%h,%[exif:orientation]' 'test.pdf'

  and

  > identify 'test.pdf[0]'

  are working but not the combination of both.

  After downgrading ghostscript to version 9.18 (9.18~dfsg~0-0ubuntu2),
  all commands are working again.

  test.pdf is just some random pdf file on my filesystem.

  See
  https://bugs.launchpad.net/ubuntu/+source/imagemagick/+bug/1806854

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