[pstricks] \psaxes: showorigin=true and origin label overlaps axis

[Peter Mueller]

Dear PSTricks group,
dear Herbert,
Let me drive your attention to the following issue with \psaxes, also described at http://tex.stackexchange.com/questions/632217 http://tex.stackexchange.com/questions/632217.
Feeding mwe.tex containing
\documentclass{standalone} \usepackage{pst-plot} \begin{document}% \begin{pspicture}(-1,-1.6)(1.6,1.6) \psaxes{->}(0,0)(0,-1.5)(1.5,1.5) \end{pspicture}% \end{document}
to
latex mwe && dvipdf -dALLOWPSTRANSPARENCY mwe
results in the lower 0 overlapping the vertical axis:
You could also use
dvips mwe
instead of
dvipdf -dALLOWPSTRANSPARENCY mwe
and get the same result.
There has been some (apparently) silent change: in 2017, the output had only the left, nonoverlapping 0 but not the lower, overlapping 0.
Moreover, PSTricks User's Guide clearly states:
showorigin=true/false
Default: true
If true, then labels are placed at the origin, as long as the label doesn’t end up on one of the axes. If false, the labels are never placed at the origin.
The quoted description is formally-logically open on the output when showorigin is true and a label ends up on one of the axes. Still, in this case, a typical reader would probably expect that the label is not placed at the origin.
How to get the old behavior back, i.e., such that the left, nonoverlapping label 0 is shown but the lower, overlapping label 0, is not shown?
(Of course, one could resort to
\psaxes[showorigin=false]{->}(0,0)(0,-1.5)(1.5,1.5) \uput[l](-.14;0){$0$}
However, -0.14 is a (probably, font-dependent) guess here to ensure that the left 0 is aligned with the other labels of the vertical axis. It would be much more helpful if the original \psaxes{->}(0,0)(0,-1.5)(1.5,1.5) or \psaxes[showXorigin=false,showYorigin=true]{->}(0,0)(0,-1.5)(1.5,1.5) would do the job).
Thanks in advance,
Peter
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