Re: Should undefined behavior be encouraged in Emacs?

[ken manheimer <ken.manheimer@gmail.com>]

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On Fri, Oct 7, 2011 at 11:26 AM, Barry Warsaw <barry@python.org> wrote:

> On Oct 06, 2011, at 10:12 PM, Lars Magne Ingebrigtsen wrote:
>
> >Andreas Röhler <andreas.roehler@online.de> writes:
> >
> >> for me transient-mark-mode in connection with a mark set is enough.
> >
> >Oh, are we having this discussion again?
> >
> >I, like (I'm assuming) all other oldey-timey Emacs users :-), disabled
> >`transient-mark-mode' the first chance I got.  And the reason for that
> >is that `C-x C-x' activates the region, which makes it impossible to use
> >that command to jump around in buffers.  Which I do constantly.
> >
> >If that rather odd overloading of the `C-x C-x' command went away, I
> >might start using `transient-mark-mode'.
>

i'm jumping in the discussion to say a bit more about namedmarks.el, which
barry mentioned, but while i'm here.  i'm an old timer that leaves transient
mark mode active, and likes it - but i think it's tolerable because i
customized the 'region' face to be only slightly different than the
background, so it's barely noticeable.  (i set the region background to
darkslategray, which blends in almost but not quite completely with the
black background which i have as the default for my emacs frames.)

barry:



[...]


> One quick note about C-x C-x and C-space.  For several decades now I've
> used Ken Manheimer's most awesome namedmarks code[1].  With no C-u, these
> work just like their default cousins (I think, it's been a long time), but
> with an argument, they allow you to name locations in the buffer.  E.g.
>
> C-u C-space
> -> Set named mark:
> here RET
> (move somewhere far away)
> C-u C-x C-x
> -> Goto mark named (default here)
> RET
>
> jumps you back to the mark named 'here'.  Of course, you can have any
> number of named marks, and both prompts support completion.  It's a
> testament to its elegant simplicity that I don't think this code has been
> touched in 20 years and still works beautifully.  It's a great addition to
> the core UI, IMO.  Notably, going to a named mark does *not* activate the
> region, which I think makes perfect sense given that I'm often jumping
> around over several screen fulls.  I don't think I could function without
> namedmarks.
>

me, too! :-)  i've just now put a more legible - but essentially unchanged -
copy of namedmarks.el on my current
site<http://myriadicity.net/software-and-systems/craft/crafty-hacks/emacs-sundries/namedmarks.el/view>,
and would love to see it incorporated in emacs.  the view in that location
is more usable than the old location which barry mentions (and i put a
redirect there - a bit of overdue tidying...)

ken

-Barry
>
> [1] My local copy is (C) 1991 FSF, which looks pretty close to
> http://wiki.zope.org/klm/namedmarks.el
>

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