World: r4wp

It severely restricts what you can pass to the scheme actors without 
any suitable refinements

Don't see it on the blog.

WRITE is as unrestricted as READ/custom was. One of the ways that 
R3's port model was sped up was to restrict the number of options 
passed to the actions.

/options is better than nowt, but I'd maintain a /params (/args) 
refinement would be beneficial to at least a few different schemes.

The /options refinements was one of the proposals for standard function 
options; /into was another such proposal. You'd have to look in R3 
chat for details.

read/lines passes thru .. so I'm not sure what you're saving but 
not allowing /args

Looked in chat #1097 (the area where standard options were discussed) 
and we haven't brought it up there yet, but Carl did a blog about 
it.

uRL?

No idea, I just remember him doing so.

The main subject of the initial /options proposal was MOLD, to replace 
all of the MOLD-related system/options settings.

Still haven't found it -- just another point where you were waiting 
on changes : )
http://www.rebol.org/aga-display-posts.r?post=r3wp771x2326

World going offline for a while.

Retrofitting QUERY would be another alternative to READ/custom.

Change the signature of query to always include a mode field: QUERY 
target mode, then you could "default" read actions with READ, read 
actions with options with QUERY and the options as second parameter, 
write actions with options with WRITE.

I'd prefer using QUERY that way over READ/custom (or better, READ/args), 
which in turn I'd prefer over (ab)using WRITE.

When did this behaviour of rejoin change?

>> type? rejoin [ http:// "www.rebol.com" ]
== url!

>> rejoin [ now/date ]
== "17-Jan-2013"

It's behaving like ajoin for dates

oh .. perhaps it never worked like that for dates

Adrian, when make prep is run, prot-http.r is copied to host-init.r

tools/make-host-init.r is where the prot-http.r is included as well 
as all the others that are included into the binary

so looks like we can include our own protocols here

Ok, altering make-host-init.r to add schemes does add them to host-init.r 
but doesn't make the schemes available.  I guess they must be initialised 
somewhere else.

Everything seems to end up in boot-code.r

why is host-init.r checked in though, if it's generated?

mezz/boot-files.r ... add protocols here and they get included into 
the binary.
I managed to add a new scheme to the binary this way

So, looks like they have to be added in two separate files

Adrian, I would guess the directory was just uploaded to git

Aren't there also other autogenerated files on git

https://groups.google.com/forum/?fromgroups#!topic/Rebol/-s8WtukYj1E



You can also discuss here if you prefer, I posted it to GG in hope 
that even Carl might be able to see or discuss it there...

No interest to discuss 'Molding decimal numbers "precisely enough"'?

We just did a codecoverage check with R3 using the test-suite.

So, Andreas and I tipped a priori. So, what's your tip?

What is a "codecoverage check"?

(Just pure line coverage.)

The number of lines in the R3 C sources which are executed at least 
once while running the test suite.

aha, interesting

my estimate: 60%

I did expect that you like this Lad. Which give a good hint, what 
kind of test-cases are missing.

What were your estimates?

I estimated 20% (based on a perceiving the C sources to contain a 
high percentage of unused code).

my estimate: 40%

Anyone else before we resolve?

I seem to be overly optimistic, but what the heck...

Ladislav, a statement you made in that Google Groups topic contradicts 
most of what you have said on the topic on other occasions:

    On the other hand, nobody doubts that the string "0.1" should suffice 
    to represent the Rebol decimal! 0.1:


That is the problem. The value 0.1 can't be precisely represented 
as an IEEE754 64bit floating point value, it can only be approximated. 
When "nobody doubts" that it can, they are wrong. MOLD not displaying 
the value with sufficient precision to show the actual value is the 
only thing that lets MOLD output a 0.1 at all. When MOLD just uses 
15 digits, it outputs "0.1", which may be what you entered, but not 
what is in memory. What is in memory is 0.10000000000000001, so if 
you have MOLD autoexpand the number of digits it uses then MOLD 0.1 
will output "0.10000000000000001".

The limit on the number of digits of precision output by MOLD is 
what lets us pretend that 0.1 is exactly representable in Rebol. 
$0.1 is exact, but 0.1 is approximate.

You already got MOLD/all changed to be this "precise enough" MOLD. 
Why are you trying to push this change into MOLD without /all?

The value 0.1 can't be precisely represented as an IEEE754 64bit 
floating point value, it can only be approximated.
 - yes, correct!


However, if you write 0.1 in Rebol, the interpreter (the LOAD function, 
usually) "understands" it somehow. What I said is that nobody doubts 
that the string "0.1" can "accurately enough represent the (above 
mentioned) Rebol value", not that the "Rebol value accurately enough 
represents the string" (I did not even define  what that means).


'When MOLD just uses 15 digits, it outputs "0.1", which may be what 
you entered, but not what is in memory. What is in memory is 0.10000000000000001, 
so if you have MOLD autoexpand the number of digits it uses then 
MOLD 0.1 will output "0.10000000000000001".' - actually, the number 
"in memory" (it does not matter where the number is, in fact, what 
matters is just that it is the IEEE-754 64-bit binary floating point 
number representing "0.1" in accordance with the IEEE-754) is 0.1000000000000000055511151231257827021181583404541015625 
in fact.

So why do you keep saying that 17 digits are sufficient to represent 
any 64bit floating pouint number?

17 digits are sufficient
 does not mean the same as "17 digits are always necessary".

Sometimes much less digits suffice.