Re: Reading text properties from a yanked text

[Gregory Heytings]

> 1. I evaluate the line below to get a bold "Hello" and I copy the result 
> in the kill ring.
>
> (insert (propertize "Hello" 'face 'bold))
>
> 2. If I try to get the properties of the yanked text, I get nil. 
> However, the text is displayed bold and a (text-properties-at (point)) 
> returns '(face bold) when point is on the H letter.
>
> (text-properties-at 0 "Hello")
>
> 3. This version works as expected (but this is not what I need): 
> (text-properties-at 0 (propertize "Hello" 'face 'bold))
>
> Why do I get a nil result in case 2 (using Emacs 28.2) even though the 
> text is displayed bold?

I think I see what you mean (but I'm not sure).

Is your recipe the following one?

emacs -Q
M-x text-mode RET
M-: (insert (propertize "Hello" 'face 'bold)) RET
C-SPC
M-b
M-w
M-: (text-properties-at 0 "<press C-y>") RET

in which you see the text in bold in the minibuffer before pressing RET? 
(Instead of M-: you could also type (text-properties-at 0 "<press C-y>") 
followed by C-x C-e somewhere else.)