Cargo.toml file if mains to ".rs" rust analyzer doesn't work, changine main file to "_.rs" solves it.

[hq-zyrosk]

rust-analyzer version: rust-analyzer version: 0.4.2309-standalone

rustc version: rustc 1.86.0-nightly (ef148cd7e 2025-02-12)

editor or extension: VSCode

relevant settings: none

repository link (if public, optional): (eg. rust-analyzer)

code snippet to reproduce:

// any code of rust doesn't show editor token colors or hints if the Cargo.toml file has a lib which mains to ".rs" file, if I use "_.rs" as main file it works, next code if the Cargo.toml file I used.

[lib]
path = ".rs"
doctest = false

[package]
name = "en"
version = "1.1.1"
edition = "2024"
license = "MIT OR Apache-2.0"

[dependencies]
libc = "0.2.169"

[ChayimFriedman2]

This is probably because VSCode doesn't send us the file, because it doesn't consider it a Rust file.

[Veykril]

Might also be our VFS not recognizing that as a file. What even is .rs? An empty file name with an rs extension or a file named .rs with no extension?

[lnicola]

IIRC those don't even work on Windows. Could be VS Code, could be our bug.

[hq-zyrosk]

VSCode detects it as a Rust file—confirmed via the status bar.

Using .rs as the main file is unconventional, but hey, we already chose Rust over the usual suspects—might as well embrace being different.

[hq-zyrosk]

Might also be our VFS not recognizing that as a file. What even is .rs? An empty file name with an rs extension or a file named .rs with no extension?

A blank file name with .rs extension.