World: r4wp

Could be it is a compiler error, the message suggests it imho.

Pointers are not my specialty :(

Have you previously done a while loop in Red/System like that? Try 
it a little simpler while [0 < len][mem: mem + 1 len: len - 1] to 
be sure it is not the combined statement that is confusing the compiler. 
(Just trying to help here until the real experts jump in)

It seems the all [] inside the while test block the problem, so how 
can I do more then one test inside it?

Assignments can't be embedded, so you have to split them out into 
a separate expression

put all [] in a block too?

len: len - 1  len > 0

keep it simple

The ALL [ ] is not needed

Good thing Red isn't called Green (as in combined blue and yellow)

The all [] was meant to be a test to see if Red/System can handle 
it?

It can, but it's not needed here

yep

Not needed here but the original was:
while [all [mem/1 <> string/1 0 < len: len - 1]][mem: mem + 1]

while [len: len - 1  len > 0]

so try

while [all [mem/1 <> string/1 len: len - 1 0 < len]][mem: mem + 1]

while [len: len - 1  all [mem/1 <> string/1  len > 0]]

6 seconds, you are fast Kaj!

It has taken 45 years for someone to say that to me :-)

Ok, understood.

I would like to have that feature in Red/System v2 :-)

Poor Marco! Hope this is still helpful!
I think those 'features' are confusing (and bad practice)

Even while [len: len - 1 0 < len] or while [0 < len len: len - 1] 
is terrible if you ask me. Luckily you do not ask me. :)

You mean the features that define REBOL?

while [0 < len len: len - 1] doesn't work, either in Red/System or 
in REBOL

I mean code like 0 < len: len - 1 is confusing to me.

That's a good functional programming idiom that REBOL and Red support. 
Without it, they wouldn't really be functional languages

Adding to Kaj's reply, assignments in Red/System are not returning 
anything, so they can't be used in ANY or ALL blocks. This is something 
we'll change in 2.0 (maybe even before if it's possible without rewritting 
most of the compiler).

Good news

Shared library generation for MacOS X has been released.

Use -t DarwinSO as compilation target for now. Some details needs 
more work and I will probably change the naming scheme for shared 
libraries targets.

Don't use -dlib compilation option as it won't activate all the required 
flags for non-Windows platforms. This should be fixed tonight.

I found out that not only does Red not support Unicode, it doesn't 
support Latin-1, not even on Windows

Both the compile time and runtime lexers don't let Latin-1 through

I've relabeled my console versions as supporting only ASCII

Hey guys was just thinking.  Why not a RED group on linkedin.com? 
 Doc you should start one up.  I'll definatley join and think many 
here would.  Would be another outlet to get more discussion with 
those outside of the usual outlets.

Good idea. I would join from the start. But better maybe in a later 
stage of the development? When it is more appropriate to attrackt 
more outside momentum because there is even more Red to show to the 
world? After Red becomes really selfsupporting? It seems to me all 
the other channels are taking a lot of time for Nenad as is.

It's low maintemance - more a badge of recognition for the time being 
but since Doc updates the red-lang.lorg site may just as well put 
those posts in the linked group also.

I don't use it, but isn't it more for business networking? Not saying 
it would be bad to show that people use Red (when that time comes), 
but I don't know how appropriate it would be for language discussion.

If Doc needs to do updates another place, that's not good, as we 
need to help keep him focused. If someone else is responsible, that 
would be best.

What we need is more activity on Facebook as well. Just look when 
last message was posted. Ppl are grateful for any kind of news ....

Gregg: +1

Paul: feel free to open one and send us invitations, but I personaly 
have no time to post news on yet another channel  (I already post 
here, on Twitter and on red-lang.org, and answer questions on IRC, 
SO chat, ...)

Pekr: I think FB was a mistake, it's not the right place/tool where 
to have technical discussions (especially on deep topic like programming 
languages).

Kaj: I don't understand what you are talking about. If you cared 
about giving an example or any useful information I could look at 
or work on, your post would look a bit more constructive.

I've been working on adding UTF-8 support for the past week, so you'll 
see construction soon

Here's what happens when I paste UTF-8 in the console on Linux:

-=== Red Console alpha version ===-
(only Latin-1 input supported)

red>> s: "Español"
== "Espa"
red>> length? s
== 4

A very similar thing happens when I paste Latin-1 into Windows

Here's what happens when I try to compile Latin-1 source code:

-= Red Compiler =- 
Compiling /home/kaj/Red/common/examples/Latin-1.red ...
*** Syntax Error: Invalid string! value
*** line: 5
*** at: {"Espa\ufffdol.txt" "Espa\ufffdol"^M
}