bugGNU gv - Bugs: bug #41737, Is `gv -grayscale` meaning...


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bug #41737: Is `gv -grayscale` meaning reverted?

Submitted by:  Victor Porton <porton>
Submitted on:  Fri Feb 28 21:25:07 2014  
Category: PostScript renderingSeverity: 3 - Normal
Item Group: NoneStatus: None
Privacy: PublicAssigned to: None
Open/Closed: OpenRelease: None

Sun Mar 2 07:54:03 2014, comment #5:

I posted to http://bugs.ghostscript.com/show_bug.cgi?id=695081

William Bader <william8000>
Fri Feb 28 21:45:28 2014, comment #4:

Please somebody report this bug at http://bugs.ghostscript.com (I've entered there at http://bugs.ghostscript.com/createaccount.cgi my email but received no confirmation email). So I can't access bugs.ghostscript.com service.

Victor Porton <porton>
Fri Feb 28 21:40:48 2014, comment #3:

$ pcal 03 2014 > ~/t/cal.ps
$ ps2pdf ~/t/cal.ps ~/t/cal.pdf
$ acroread ~/t/cal.pdf

Then I printed it in Acrobat Reader with its "Output Mode" setting being "Color" and "High Quality Grayscale". They outputted no gray regions at all or gray regions as VERY fade color which a man would have trouble to read.

But! When I've set Acrobat Reader to "Black Only Grayscale" it printed a high quality page with all needed degrees of gray.

It seems that we have a trouble with GhostScript confusing different "quality" settings.

Victor Porton <porton>
Fri Feb 28 21:27:30 2014, comment #2:

$ gs -version
GPL Ghostscript 9.05 (2012-02-08)

Victor Porton <porton>
Fri Feb 28 21:27:04 2014, comment #1:

$ gv -version
gv 3.7.4

Victor Porton <porton>
Fri Feb 28 21:25:07 2014, original submission:

$ pcal 03 2014 | gv -grayscale -

This outputs a colored window (PNG attached), despite of -grayscale argument.

It seems that -grayscale meaning is reverted. (Without -grayscale flag it looks like grayscale).

Victor Porton <porton>


Attached Files
file #30740:  cal.ps added by porton (11kB - application/postscript - the files we have trouble with)
file #30741:  cal.pdf added by porton (4kB - application/pdf - the files we have trouble with)
file #30739:  shot.png added by porton (37kB - image/png)


Depends on the following items: None found

Items that depend on this one: None found


Carbon-Copy List
  • -unavailable- added by william8000 (Posted a comment)
  • -unavailable- added by porton (Submitted the item)

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    Follow 3 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Fri Feb 28 22:00:08 2014portonAttached File-=>Added cal.ps, #30740
      Attached File-=>Added cal.pdf, #30741
    Fri Feb 28 21:25:07 2014portonAttached File-=>Added shot.png, #30739

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