bug#52545: 29.0.50; Make org-babel-execute-buffer ignore irrelevant src blocks

[Berry, Charles]

Rudy,

> On Dec 29, 2021, at 11:26 PM, Rudolf Adamkovič <salutis@me.com> wrote:
> 
> (Note: I do not know what ECM stands for.)


ECM stands for =Exemple Complet Minimal=, per 
https://orgmode.org/worg/org-faq.html#ecm, which says "The term refers to test 
files that can reliably reproduce a bug with the minimal amount of code."

It also references 
https://list.orgmode.org/orgmode/80oc3s13rg.fsf@somewhere.org/ for more details.

Roughly, an ECM is something a reader should be able to copy into a file and 
run "as is" on his/her setup. 

HTH,
Chuck