bug#62250: 29.0.60; Allow context menu from text properties to not override everything

[Eli Zaretskii]

> From: Augusto Stoffel <arstoffel@gmail.com>
> Cc: 62250@debbugs.gnu.org,  juri@linkov.net
> Date: Sat, 18 Mar 2023 12:19:56 +0100
> 
> On Sat, 18 Mar 2023 at 10:31, Eli Zaretskii wrote:
> 
> >> Alternatively, it can return a completely new menu.  In
> >> this case, no further functions from `context-menu-functions' are
> >> called.
> 
> > What if a Lisp program _does_ want to override the menu specified by
> > context-menu-functions? or what if it wants the menu specified by the
> > text property to be the _last_ entry, not the first?
> 
> It's explained in the bit I kept: you ignore the MENU argument and
> return a totally new keymap / not `eq'.

What MENU argument?  I see only a CLICK argument.

> Adding things at the beginning or end of a menu is an option that
> easy-menu-add-item etc already offer, right?

I admit I don't see how easy-menu-add-item is related to this.

> Note that currently a member of context-menu-functions cannot override
> the menu, and a context-menu-function cannot _not_ override it.  My
> suggestions allows all possibilities.

That part I did understand, but it looked to me that your proposal
stops short of covering all the possible situations.