[obelos]

Oh, c'mon, “purl” was right there!

[Izkata]

Given what it does, and to avoid confusion with perl, "transform url" seems more reasonable. Though I probably would have gone with "turl" so it's easier to pronounce.

[enneff]

It seems like a nod to the “tr” command.

[jcul]

Yup, I guessed the same, and indeed it explicitly states so in the blog post linked by another commenter.

> trurl is a tool in a similar spirit of tr but for URLs. Here, tr stands for translate or transpose.

[obelos]

Though it hardly gets any use because s/// is so much more flexible, Perl also has a tr/// builtin that replicates the behavior of the command line tool.

[sidpatil]

That would collide with this: https://en.m.wikipedia.org/wiki/Persistent_uniform_resource_...

[twic]

I wonder if the name is a Lem reference: https://en.wikipedia.org/wiki/The_Cyberiad