Re: [BUG] org-babel-tangle may fail due to (org-babel-tangle-collect-blocks lang-re tangle-file) [9.6.9 ( @ /home/andrea/.emacs.d/elpa/org-9.6.9/)]

[Ihor Radchenko]

Andrea <andrea-dev@hotmail.com> writes:

> This is the full trace I get running "emacs --debug-init" (sorry I should 
> have added it in my bug report):
>
>    Debugger entered--Lisp error: (wrong-type-argument stringp nil)
>      string-match("\\`\\(?:e\\(?:\\(?:macs-\\)?lisp\\)\\)\\'" nil nil)
>      string-match-p("\\`\\(?:e\\(?:\\(?:macs-\\)?lisp\\)\\)\\'" nil)
>      (not (string-match-p lang-re src-lang))

That looks like a malformed src block with missing lang.
I recommend running M-x org-lint

I now made Org skip source blocks without defined language when
tangling.
https://git.savannah.gnu.org/cgit/emacs/org-mode.git/commit/?id=f3de4c3e0

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>