Do not lowercase module:// backends#28473
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timhoffm
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…473-on-v3.9.x Backport PR #28473 on branch v3.9.x (Do not lowercase module:// backends)
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Corresponding change in IPython is ipython/ipython#14475. |
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This is something I missed as part of moving the backend resolution to Matplotlib. Since version 3.9.0 Matplotlib handles the case-sensitivity of backend names, making them all lowercase for internal use. But since matplotlib/matplotlib#28473 uppercase letters are allowed in backend names of the form `module://soMe_moDule.sOmE_NAme`. Hence we need to not force backend names to be lowercase in IPython when passing them to Matplotlib. It is just a one line change that happens to make the code simpler, plus a new test. The Matplotlib change will be released in 3.9.1 which is due shortly, possibly today. The new test checks the Matplotlib version to know whether uppercase backend module names are allowed or not.
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Closes #28432
PR summary
This adds checks to avoid changing cases of
module://names.Entry point names and default names will still be normalized.
Adds a test to ensure loading is case sensitive as well as a unit test of the normalization function (which is private, but fairly central)
PR checklist