`Comint-mime` causes the shell prompt to be printed twice.

[hongyi-zhao]

On Ubuntu 20.04.3 LTS, I use self-compiled git master Emacs, and installed comint-mime via straight's use-package integration as follows:

(use-package comint-mime
  :straight ( :host github
	      :repo "astoff/comint-mime"
	      :files (:defaults "*.py" "*.sh"))
  ;;https://github.com/jwiegley/use-package#hooks
  ;;https://github.com/astoff/comint-mime#usage
  ;;https://mail.google.com/mail/u/0?ik=7b73d6af10&view=om&permmsgid=msg-a%3Ar-1233702610310931433
  ;;https://mail.google.com/mail/u/0?ik=7b73d6af10&view=om&permmsgid=msg-a%3Ar5550893479419332762
  :hook ((shell-mode inferior-python-mode) . comint-mime-setup)
  :custom
  ;;  https://emacs.stackexchange.com/a/33992
  ;;https://github.com/astoff/comint-mime/issues/4#issuecomment-938384059
  (org-format-latex-options '(plist-put org-format-latex-options :scale 1.5))
  )

When I issue the M-x shell RET command, I found that comint-mime causes the shell prompt to be printed twice as follows:

Are there any tips for solving this problem?

Regards, HZ

[astoff]

Yes, this happens intermittently for me as well. It's because of this call:

https://github.com/astoff/comint-mime/blob/1431605940724318c403a6048049c6a32cc16b0e/comint-mime.el#L225-L229

I'm not quite sure what to do about this, since comint-redirect-send-command is not supposed to print any output. In any case, the extra prompt annoying but doesn't do any harm.

[hongyi-zhao]

Why not try to discuss it on help-gnu-emacs?

[astoff]

It would be nice to know why and exactly when this happens, but since it doesn't seems to cause any actual problems, I'll close the issue.