[Toybox] Editors and such.

[David Seikel]

On Wed, 20 Jun 2012 18:57:03 -0500 Rob Landley <rob at landley.net> wrote:

> On 06/18/2012 10:10 PM, Andre Renaud wrote:
> >> No, they have an implementation of screen. The first one I used
> >> (circa 1993) was from Sun.
> >>
> >> The wonkypedia article says the first pair of maintainers handed
> >> it over to a second pair of maintainers who handed it over to the
> >> gnu project. So it's a bit like Gold and Patch and Grub and EGCS
> >> so on: somebody wrote a thing that worked and the Gnu project
> >> managed to take it over and plaster their name all over it as the
> >> versions they ship bloat and lose reliability.
> > 
> > There is a BSD-licensed terminal multiplexer - 'tmux'. It's
> > conceptually the same as GNU screen, but I'm assuming it's a
> > completely clean code base.
> 
> I wrote a terminal multiplexer for my old "chamelyn" bulletin board
> system as a teenager. (DOS with Desqview. Those were the days. Well,
> some of 'em anyway.)
> 
> All the tabbed browsing terminals are also terminal multiplexers. In
> Linux, ptys make it easy.
> 
> The fiddly part is curses output, but the line handling stuff for
> editing a shell command line and doing command line history is 90% of
> the work, and then stacking those vertically gets you something like
> vi. (That was my general plan of attack, anyway.)
> 
> Keep in mind that Unix doesn't implement backspace sanely (like the
> commodore 64 did), thus you have to figure out when you're at the left
> edge of the screen (keeping track of your cursor position)
> 
> That's why if you do "echo -n this will screw bash up" and then cursor
> up a few times bash's command history gets all wonky because it
> _thinks_ it knows where the cursor is but actually started farther to
> the right. (I contributed ansi escape screen position querying code
> to busybox to improve the situation for ash.)
> 
> I'm pretty sure I blogged about this... Recentish:
> 
> http://landley.net/notes-2011.html#15-11-2011
> 
> During toybox's first regeneration:
> 
> http://landley.net/notes-2007.html#19-10-2007

I was pretty much coming to the conclusion that I would have to write
something that smells like readline.  Sounds like you agree.

I'm half tempted to implement tabbed boxes as well, but that would be
low priority

-- 
A big old stinking pile of genius that no one wants
coz there are too many silver coated monkeys in the world.
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