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My interpretation... the author is arguing against creating a new Domain Specific Language when you could just use the host language.

I haven't understood that but then again I don't really understand what the post is about.

I would agree if so with the caveats that it's all fine unless the host language lacks a lot of semantic features that the DSL will add.

Then again, I don't understand the blog post. Is it about programmable programming language?

this is the blogpost version of "could have been an email" :D thanks.