sailfish VS handlebars-rust

Any recommendations for rust template engines? I'd like something that can easily render labeled fragments of a template instead of requiring me to split a page into a dozen little files. Kinda like inline {{block}} definitions in Go's html/template. Speed is also nice.

From template-benchmark-rs [0] I found sailfish [1] (fast, but no fragments(?)). render-rs [2] and syn-rsx [3] (2022) both let you write html in rust macros which is cool (maybe that can substitute for fragments?). Then there's gtmpl-rust [4] which is just Go templates reimplemented in rust.

[0]: https://github.com/rosetta-rs/template-benchmarks-rs

[1]: https://github.com/rust-sailfish/sailfish

[2]: https://github.com/render-rs/render.rs last updated Jul 2020

[3]: https://github.com/stoically/syn-rsx last updated Nov 2022

[4]: https://github.com/fiji-flo/gtmpl-rust

Sailfish (very fast, but lots of unsafe usages)

(Sailfish is fastest, but it's syntax is of the more traditional <%= msg %> flavour and Markup.rs is second-fastest with a Maud-like syntax but the author apparently doesn't have time to rewrite the syntax reference, so you have to follow a link from the open issue to an old version of the README.)

Using [Actix](actix.rs/), Sailfish, thiserror, and a bunch of supporting libraries reminds me of when I was building a project using Pylons and Mako (now replaced with Pyramid), except without the SQL.

If you're OK with a template engine that can't be used in any sort of "if debug builds, support hot reloading" mode, Sailfish compiles its templates to native code and it's the fastest option around.

handlebars to create the HTML templates of all the built-in components

handlebars-rust, based on Handlebars

Handlebars/guide/#what-is-handlebars)

filling out templates inside files using Handlerbars

Would Handlebars-Rust be good for parsing non-Rust files? Or is there another templating engine built in Rust that I should use?

I am learning Rust currently, so to improve my skills, I am considering using its Handlebars implementation.

If you paid attention to the function code above, it might have occurred to you that the assets we serve don't have to be completely static. For example we could instead embed a handlebars template or similar & render it with the handlebars crate, allowing us "semi-dynamic" content for lack of a better name.

Tera is a templating engine, inspired by Jinja2 and Django. There are other options like handlerbars and askama, but in this case I prefer to use tera because I'm familiarized with the syntax.

This weekend I learned some unfamiliar behaviors with the way Handlebars handles nested variable scopes. I typically use Handlebars via the handlebars-rust implementation which aims to maintain nearly one to one compatibility with the JavaScript implementation. They have block scope helpers such as #each and #with, both of which create an inner scope for variable resolution. Unfortunately, the syntax can be quite unintuitive for accessing outer scope once in those nested scopes.

I have been tweaking and fixing issues with newline stripping feature for handlebars: https://github.com/sunng87/handlebars-rust/pull/448/files