[Octave-bug-tracker] [bug #43907] OpenGL render code called even when gnuplot is graphics_toolkit

[Dan Sebald]

Follow-up Comment #12, bug #43907 (project octave):

This isn't a bug.  That warning appears regardless of toolkit.  That motivated
me to find the source of the 2205, so I changed the interpreter of the text
from 'tex' to 'none' and then got the expected text   on the plot:


>> h = text (0.5, 0.5, ' ', 'fontname', 'arial')
warning: ft_render: skipping missing glyph for character '2205'
warning: called from
    text at line 148 column 12
h = -6.3267
>> set(h, 'interpreter', 'none')
>> set(h, 'interpreter', 'tex')
warning: ft_render: skipping missing glyph for character '2205'
>>


For Tex,   means empty set.  (Consult with this guy:
https://savannah.gnu.org/bugs/?39828.)  So that is where the 2205 is coming
from.  That's the empty set character and it doesn't exist in the arial font.

Is Tex supposed to be the default text interpreter?

The other part of this discussion was the behavior of switching between
graphics tool kits and/or some way of changing all open figures at once.  Do
we want to pursue that (and retitle bug report), or is it fine as is?


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