[Octave-bug-tracker] [bug #48017] --no-window-system command line option does not disable graphics

[Mike Miller]

Follow-up Comment #1, bug #48017 (project octave):

The option does avoid some things, but not everything. I agree it could be
used to do more.

Here's what it does

* prevent starting the GUI
* prevent trying to initialize $DISPLAY
* set up the display_info class so that height, width, dpi all return 0, and
display_available returns false

The problem seems to lie in that display_info::display_available should be
used in more places.

Making Octave remove DISPLAY from its environment might be one way to go, but
I usually dislike modifying the user's environment unless it's absolutely
necessary.

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