bug#9054: 24.0.50; show source in other window

[Juri Linkov]

> It's an entrance into syntax and font-locking, tells me about text and
> overlay properties, coding, character sets and composition.  What else
> could you desire thinking of how often these topics are discussed here
> on these list?

All these overlay properties, coding, character sets and composition
wouldn't be too confusing for beginners?

>>> A "Select" context submenu should propose something reasonable when
>>> there is no active region.  When there is an active region around the
>>> mouse position it should say _what_ "Undo" undoes and what "Clear"
>>> clears.  And the Edit sub-menu should say the same.
>>
>> I don't understand what it could say.  Do you mean it should change to
>> "Undo in Region"?
>
> I do.  IIUC that's what 'undo' (unfortunately) does when the region is
> active.

Done, with many other your suggestions implemented, thanks for ideas.

>> Then "Context Menus" could be placed below from "Menu Bar".
>
> I'd say we should pluralize some of these, namely "Scroll Bars",
> "Fringes", "Window Dividers" and "Window Tab Lines", move them below
> "Speedbar" and after them add "Tooltips" and "Context Menus" and then
> the separator.

I have no opinion about pluralization, so I only added "Context Menus".