Fixes for backtrace on run + test

[netromdk]

• Added a missing type for cargo-process--enable-rust-backtrace
• Fixed set-rust-backtrace such that if cargo-process--enable-rust-backtrace is set and command is "run" or "test" (before it would check for "cargo run" or "cargo test" while the input didn't contain "cargo"), then it sets cargo-process--rust-backtrace. Additionally, if cargo-process--enable-rust-backtrace is not set then it resets cargo-process--rust-backtrace. Otherwise, it is enabled for the next commands as well even if cargo-process--enable-rust-backtrace is disabled.

I found the bug while testing with this:

(defun msk/cargo-run-backtrace ()
  (interactive)
  (let ((cargo-process--enable-rust-backtrace t))
    (cargo-process-run)))

[netromdk]

Any update on this? :)

[kwrooijen]

Sorry for the late response, thanks for this!