The purpose of this question is primarily to serve my curiosity, but it can maybe save some time for others who may press
isearch-forward-regexp) just like they would press
isearch-forward), but who would see nothing happening.
In fact, when I press
C-M-s just like I would for any other keystroke, nothing happens, and I lately figured out I had to hold it pressed for about half a second for it to work.
This is also the case if I want to get the description of
What is the reason for that? Is it related to my configuration?