Description

In Rust the correct way to escape a reserved word is to use raw identifiers:

https://doc.rust-lang.org/book/appendix-01-keywords.html#raw-identifiers

Currently they are being prefixed with _ which in Rust is used to indicate an unused identifier:

https://doc.rust-lang.org/stable/nightly-rustc/rustc_lint_defs/builtin/static.UNUSED_VARIABLES.html#explanation

openapi-generator version

All versions as far as I am aware:

https://github.com/OpenAPITools/openapi-generator/blob/7.0.x/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RustClientCodegen.java#L418

Related issues/PRs

A similar issue was created for Rust Server (not Rust client), which correctly identified the issue with using _ but applied the prefix of param_ instead:

#5455

Suggest a fix/enhancement

I will create a PR to fix this