Hi Ihor,

A thousand apologies for my horrible carelessness with the parentheses.
I should have checked the code. Here goes the patch again corrected. I
hope it's alright now.

Ihor Radchenko writes:

> Also, the original code contained the clause:
> (or (get lang from the alist1)
>     (get lang from the alist2)
>     lang ; Fallback to provided language if not known.
>     )
>
> Your variant does not have the fallback part. Is it intentional?

Yes, I removed it because I thought it was not necessary, because after
all the user must put a supported language as the value of #+language.
Anyway, in case it breaks something backwards I have replaced it. Now
the or expression is:

(or (nth 1 (assoc-string lang org-latex-language-alist t))
	lang)

Best regards,

Juan Manuel