SciTools / cartopy / 28674662989 / 1

84%

main: 84%

Pull #2685

github

Always merge MultiLineString when checking grid label intersections

Sometimes, Shapely will produce a `MultiLineString` with multiple parts
that coincide (most notably on macOS for `LambertConformal`), causing
potential labels to be placed in slightly different places, and then
different ones to be visible due to overlap.

By merging the intersection of the lines and map boundary, we can ensure
that potential labels are placed in consistent spots, and there should
not be any platform-specific changes to lable visibility.

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