Jamie Matthews <jdm204@cam.ac.uk> writes:

> I can confirm that the key turns red on insert when I altered the key outside of emacs (with that second version of `org-cite-basic--parse-bibliography`).

Great. Then, I am attaching the patch with the new version of the
function. I will let Nicolas decide if it is good enough to be merged. I
do not feel confident enough with org-cite code to judge if my approach
is not missing some edge cases.

> However, I'm now noticing that the hang improvement earlier (< a second down from ~10) doesn't always occur.
>
> Specifically, if I
>
>   1.  emacs -Q
>   2.  eval your code in scratch
>   3.  C-x C-f to the org file
>
> I get the hang. However, if I then
>
>
>   1.  kill the org buffer
>   2.  eval the code again
>   3.  re-find the org file
>
> the hang is gone. Without eval​ing your code in between, killing the org buffer and finding it again in the same emacs session reproduces the hang everytime, which was probably what I did the first time I report the improvement, as in I didn't check it worked from startup.

It is most likely because you defun the function after emacs -Q before
org is loaded, then open Org file (opening Org file autoloads org-mode),
and then org-mode overwrites the manual defun.
If I am correct, putting (require 'oc-basic) before defun will fix what
you are seeing.

Best,
Ihor