World: r4wp

so in my case ANY ["quit" "q"] will ALWAYS return "quit" since it 
is a valid expression

Correct.

So think of how to solve it other ways. ANY evaluates, so you could 
put your comparison expressions inside the ANY block. That will get 
unwieldy very fast though. How else might you do it? What is it you 
want to do (in a general sense)?

I suppose the CASE command would be better

My goal is to simply stay in a loop, accepting all valid rebol commands 
until I quit the loop

For example, I've defined some variables to script names, and so 
when I enter the variable, it should DO those names, until quit

And for the case of q and quit, and maybe others, you want to see 
if they command is in a set of commands you want to process in a 
special way, correct?

That is, you want to see if you FIND the command in a set of known 
commands and act accordingly.

not really, it's just a quick shortcut to allow any REBOL command 
to be performed while it is in a script that is already executing.
...doing stuff...

stopping here to accept various rebol commands and looping until 
finished
...doing the rest of the script

Its a way to "pause" a running script to enter rebol commands and 
then when I'm done, get out of the loop and continue with the rest 
of the script

Right, so you ask for the command, see if it's a command to exit 
your loop (q or quit) and DO it if not, correct?

yep

Although, the way I have it, it should do the command no matter what 
is entered

And it will, which is not what you want.

So start with that, and then add the handling for your special commands.

Actually, it is.  I want it to do ANY rebol command.

forever [cmd: ask "? "  do cmd]

Any command except q or quit, which should break your loop, correct?

And what about an empty command?

Doesn't work

It just repeats what i've entered

forever [do ask "? "]  will work on some rebol commands like HELP 
or PRINT "HI" but not "Q" or "QUIT"

which is why I tried to state the condition to break out of the loop

So if you type "quit" (no quotes) after running that, it doesn't 
quit REBOL?

right

it is like the word is not being evaluated

What version of REBOL, and what OS? It works as expected here on 
Win7.

r3 111 vista

Was just askin about R3 vs R2 :/ I fear you hit a known bug in R3.

Ah, R3. Let me try.

Indeed. I now see your behavior.

thanks Andreas,  that explains it

(http://issue.cc/r3/851-- that's the bug, just in case.)

Just FYI: workaround the bug:

forever	[
	do script: ask	[~ " REBOL COMMAND? "]	; do the entered command
	if script = "q"		[break]
	if script = "quit"	[break]	
	]

So, coming back to the original question... :-) Rather than doing 
"script =" for every command, you could say "if find ["quit" "q"] 
cmd [break]", so it's easier to check multiple commands, aliases, 
etc. e.g., what about HALT?

So I would still hold the result of ASK in a temp var, rather than 
DOing it directly and relying on the bug's behavior.

i.e., get the command, check if it's special and, if not, DO it.

Yes, that would work better

May be we should create a "R3 School" and rename this group to "R2 
School"?

So we do not have to ask for version for every question asked in 
this group. What do you think?

I think this group is fine. Otherwise we may have fragmentation about 
general questions.

In R3, I want to be able to request a specific directory quickly 
and easily.  The easiest way I've found is to use REQUEST-FILE since 
it allows the user to quickly "navigate to" the desired directory. 
 Thing is, it requires the user to pick an existing file , even though 
I don't care about the file itself.  In most cases, this is fine 
since the user can pick any one of the files, but in cases where 
a directory is empty of a file, I have a problem.  

example code:

request-file/file to-file join "/" second parse what-dir "/"   <-- 
I use this to default the directory at the highest level is   ie 
 %/c  

Is there a better way to do this in R3?

There is also request-dir I think.

I'm using 2.100.111 and no REQUEST-DIR, unless it was added in a 
later version

In Saphirion's build we have REQUEST-DIR already added.

I tried request-file in the android build, it didn't crash but nothing 
showed up. Not that I needed it - I was just curious.

The android version doesn't have thesee calls implemented yet (AFAIK 
android doesn't have any "default OS" requesters for that so we need 
to do it ourself or reuse custom code)

But in Windows version this works.

It's even in the lates public source release here: http://development.saphirion.com/downloads/
so if anyone have time to make pull-request?

(check the OS_Request_Dir() function in src\os\win32\host-lib.c as 
a base for the feature)

Thanks Cyphre, I've just downloaded from Saphirion -- Looks exciting!

I am trying to troubleshoot a peculiarity in   R3    2.101.0 from 
Saphirion

>> print type? what-dir

file!				<-- Ok, it's a file, even if has an end slash instead of 
a specific file path
>> print type? request-dir	; select any directory
file!				<-- Ok, Same thing


So it stands to reason that passing the value returned by WHAT-DIR 
and by REQUEST-DIR  will be FILE!

So here is my code that is giving me some trouble:

file-list:	[]

read-dir:	func	[
	dir	[file!	]
	] [
	foreach file read dir [
		file: either dir = %./ [file] [dir/:file]
		append file-list file
		if dir? file [
			read-dir file
	]	]	]

inp-dir: request-dir/path	what-dir 

unless inp-dir [ask	">>> No directory selected, cannot proceed  (Enter)" 
 quit ]
cd :inp-dir


read-dir inp-dir		; <-- does not work as expected, must use cd and 
what-dir instead
;read-dir what-dir
new-line/all file-list on
print mold file-list