Builtin launcher function for vterm

[DrLoiseau]

Hey,

I'm starting to use the package and it is great ! However I am facing an issue when running my executable in a compile buffer or eshell. It is quite verbose in debug mode, so it becomes very slow. the vterm package uses vtermlib which is an external library written in C, so it is much faster. I am struggling to implement the cmake-integration-program-launcher-function to handle vterm as I am not fluent in emacs-lisp !

Would it be possible to integrate it with a symbol like for eshell ?

Thanks,

[darcamo]

A good approach is to use an LLM to create the launcher function for you. You can pass the source of the ci-eshell-program-launch-function function in the cmake-integration-launch-functions.el file to an LLM and ask it to implement a different one that uses vterm instead of eshell. The changes are minimal and an LLM should be able to generate working code. I actually did just that and added a commit detailing this process in the README.md.

For reference, this is the launch function that gpt-5.1-codex created (which I added as example in the README)

(defun vterm-program-launch-function (command &optional buffer-name)
  "Launch COMMAND in a vterm buffer named BUFFER-NAME (defaults to *vterm*)."
  (unless (featurep 'vterm)
    (user-error "vterm is not available"))
  (let ((buffer-name (or buffer-name "*vterm*")))
    (unless (get-buffer buffer-name)
      (vterm buffer-name))
    (let ((vterm-buffer (get-buffer buffer-name)))
      (with-current-buffer vterm-buffer
        (goto-char (point-max))
        (vterm-send-string command)
        (vterm-send-return))
      (pop-to-buffer vterm-buffer))))

Adding that to your Emacs configuration and setting cmake-integration-program-launcher-function with

(setq cmake-integration-program-launcher-function 'vterm-program-launch-function)

should cover you use case.

Let me know if that is not enough and I can take another look.

[DrLoiseau]

sorry for the late answer, it is perfect, thanks !