bug#51757: 27.2; [patch] man.el : wait for all man(1) output to be buffered before fontifying

[Eli Zaretskii]

> From: Jason Vas Dias <jason.vas.dias@gmail.com>
> Date: Thu, 11 Nov 2021 12:08:14 +0000
> Cc: 51757@debbugs.gnu.org
> 
> Of course, with the man.el from emacs-28, I get the error:
>   'completing-read: Symbol’s function definition is void: format-prompt'
> under Emacs-27.2 , which is NOT Emacs-28 :-( .
> 
> If you can do 'M-x manual-entry bash' in Emacs-28, and
> it never misses a font transition, let me know - I will
> re-examine once Fedora's Emacs 28 comes out.
> 
> But I enclose a screenshot of how the bash manpage looks with the
> Emacs 27.2 man.el, with all the remaining text of the man-page
> after the start of the 'PARAMETERS' section in bold, because
> only a partial escape sequence was at the end of the buffer
> and the transition was missed by fontification-on-the-fly .

I just did that, and I see no problems with the font transitions.