Create and yank bibtex entry from a DOI

yank-bibtex-from-doi.el

(defun yank-bibtex-from-doi ()
  "Create and yank bibtex entry from a DOI."
  (interactive)
  ;; read the doi from minibuffer
  (setq doi (read-from-minibuffer "doi: "))
  ;; define the curl shell command
  (setq cmd
        (concat
         "curl -LH \"Accept: application/x-bibtex\" "
         "https://doi.org/"
         doi))
  ;; define the bibtex entry by calling the cmd and strip stderr
  (setq bibtex
        (shell-command-to-string
         (concat cmd " 2>/dev/null")
         )
        )
  (insert-for-yank bibtex)
  )

the comment re: global vars is simply that after running your function, C-h v RET bibtex RET will show you the value of the bibtex variable. This might be intended, as it helps with debugging, but for finished functions, it is better to not clobber the global environment.

Thank you very much! The global var is a mistake, thank you for showing me (let*).

I also get the bibtex entry as a single long line (also from the command line). However, C-c C-q doesn't work for me (tested two GNU/Linux distros), but bibtex-reformat does exactly what I need.