Support templated long URLs (inject forwarded path/query into arbitrary positions)

[julioz]

Summary

There is no way to inject the forwarded value into an arbitrary position of the long URL — in particular, into the middle of an existing query-param value.

I'd like to propose optional templated long URLs, closely modeled on how Tailscale's golink handles this.

Use case

Consider a destination where a variable segment must live inside an existing query-param value, alongside fixed content:

https://example.com/search?q=fixed-prefix+SOMETHING

I want a single short URL such that visiting:

https://exam.ple/s/whatever-the-user-typed

redirects to:

https://example.com/search?q=fixed-prefix+whatever-the-user-typed

[acelaya]

The feature request per se makes sense. It has been requested in the past and I think it might be useful.

However, I don't appreciate the super verbose, AI-generated issue body. Please, summarize and simplify it with your own words or I'll close the issue, as this project forbids the use of AI in any way.

[julioz]

Hi @acelaya, I couldn't find where it has been requested in the past (even though I did search for it). I'm glad you acknowledge the feature-gap. About the issue description: it's trimmed.