Feature Request: Additional format specs

[azriel91]

Sublime Text Version

E.g Sublime Text 4 (Build 4150)

Rust Enhanced Version

2.25.0

Operating system

Pop OS 22.04 / Linux 6.2.6

Feature Request

Heya 👋

TL;DR: Extend or provide some way to extend RustEnhanced.sublime-syntax with additional macros which take format specs, and highlight the args in them.

Description

The indoc crate provides macros to dedent whitespace in string literals. Example:

let arg = 123;
let string = formatdoc!("
        this is some text
            and an {arg}
        more text
        ");
//                 ^^^^ The {arg} is interpreted as it would be in a `format!()` macro
//      ^^^^ The spaces on the second line are kept.
// ^^^^^ these spaces are removed by the macro.

I'd like {arg}s inside these additional macros to also be highlighted since it makes it easier to spot format strings.

There are 4 macros that do the interpolation:

• formatdoc!($fmt, ...) — equivalent to format!(indoc!($fmt), ...)
• printdoc!($fmt, ...) — equivalent to print!(indoc!($fmt), ...)
• eprintdoc!($fmt, ...) — equivalent to eprint!(indoc!($fmt), ...)
• writedoc!($dest, $fmt, ...) — equivalent to write!($dest, indoc!($fmt), ...)

I think concatdoc!(...) doesn't interpolate.

Solutioning

I could just edit RustEnhanced.sublime-syntax#L149-L182 in a local clone of the plugin, though:

• Maybe others want it as well
• It would be nice to not have to remember to update my local copy

There's the "wrong-but-easy" solution to just include it in the regex; I haven't worked on sublime's plugin system to know if it can be made configurable, but I suspect it's possible.

Would this be something you're happy to have in the plugin?