[Octave-bug-tracker] [bug #50466] makehgtform function missing

[Rik]

Follow-up Comment #30, bug #50466 (project octave):

This has been a small but signicant thread.  When pulled on, it has unraveled
the entire sweater.  I've located three bugs so far.

1) axes::properties::update_axis_limits is using a 1x4 vector for limits when
it should be using a 1x2 vector.  This results in the error when trying to set
"xlim".  The incorrect assumption also looks to be causing a significant
performance hit as the limits are being updated every time this function is
called, rather than only when values have changed.

2) Out-of-order processing of property/value pairs when the property is
"parent".  This results in the wrong behavior for hgtransform.

3) "Lost" graphics handles if multiple "parent" properties are specified. 
This isn't good coding style, but the interpreter should cope rather than
potentially segfault.

I'm going to be filing separate bug reports about those three so that this
report stays on target about the missing "makehgtform" function.

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