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Maintenance Ruby 3.4 gets fixes, but no new features. Switch to Ruby 4.0 →

class method

Gem.rdoc_hooks_defined_via_plugin?

rdoc_hooks_defined_via_plugin?

Returns whether RDoc defines its own install hooks through a RubyGems plugin. This and whatever is guarded by it can be removed once no supported Ruby ships with RDoc older than 6.9.0.