For reference, this has been like this sincee34a333 and has no previous history.

We also do not appear to ever use it internally. All of our backends useget_dashes instead which (mostly) ensures that the dash pattern is the same across all backends (and enables us to scale the pattern with line width).

This needs an API changes note (there may be third-party backends working around this), but given that the current API is obviously problematic (and no one has complained) I do not think it needs a deprecation cycle.

GraphicsContextBase.get_linestyle is not used anywhere in mpl code.
GraphicsContextBase._linestyle is used only inGraphicsContextBase.copy_properties and it sets the variable DIRECTLY.
GraphicsContextBase.set_linestyle is used only inone place andoverridden only in wx backend.
There isa TODO entry in pdf backend about_linestyle from 2006 year and I am not sure it makes any sense now.

So I assume it is safe to fix this without deprecation (or even to remove the property).

If we're going to break backcompat, let's just remove the property?

power cycled to run CI with fixes from master branch to other tests.

Current coverage is 62.52% (diff: 100%)

Merging#7730 intomaster will increase coverage by0.40%

@@             master      #7730   diff @@==========================================  Files           174        174            Lines         56028      56703   +675     Methods           0          0            Messages          0          0            Branches          0          0          ==========================================+ Hits          34805      35453   +648- Misses        21223      21250    +27  Partials          0          0

Powered byCodecov. Last update8279f64...0980bc5

LGTM 👍
Thanks@Kojoley