Nokogiri will now accept up to Ruby v. 2.5.x; I ran it on Ruby 2.6.x today, after upgrading to nokogiri 1.8.5, and got this:

nokogiri requires Ruby version >= 2.2, < 2.6. The current ruby version is 2.6.3.62.

Running Ruby under a package manager makes it easier to update/upgrade. So, on Windows, I'm using Chocolatey to install/upgrade.

When I do a minor-version upgrade, like 2.5 -> 2.6, a nice thing with Chocolatey is that it leaves the 2.5 install alone, in its own folder, and puts the new, 2.6 version in a different folder. Then you can change which Ruby version you're using, just by changing the filepath for it in your PATH environment variable (e.g., edit it to have either

C:\tools\ruby25\bin

or

C:\tools\ruby26\bin

A very slight downside is that you have to re-install your self-installed gems, including Asciidoctor, in the new Ruby version; they won't carry over from the old version).

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NAML