If this is a feature, it's a nasty one.

[wouter]

> Bug or feature? or: Don't I love the mechanics of expansion
>
>     * From: Victor Eijkhout
>     * Subject: Bug or feature? or: Don't I love the mechanics of 
> expansion
> * Date: Sun, 16 Mar 2003 17:42:18 -0800
>
> This bug took me an hour or two to find. I don't think I like it.
>
> on tt arg
>   put arg
> end tt
>
>
> on t
>   set the aaa of me to "a"
>   put 1 into a
>   send "tt" && the aaa of me to me
> end t
>
---snip


> Anyway, solution:
>
> send "tt" && quote & the aaa of me & quote
>
------snip

> on t arg1,arg2
>   put arg1
> end t
>
>
> on tt
>   set the aa of me to 3,4
>   send "t" && the aa of me to me
> end tt
>
>
> (I guess, for clarity, another clause is could be added in the above 
> definition.)
> --
> Victor Eijkhout <[EMAIL PROTECTED]>
> tel: 865 974 9308 (W), 865 673 6998 (H), 865 974 8296 (F)
> http://www.cs.utk.edu/~eijkhout/
> _______________________________________________



Hi Victor,

AFAICS it is all very consistent. No bug at all.

In the first handler :

on tt arg
   put arg
end tt


on t
   set the aaa of me to "a"
#####   makes a custom property called "aaa" and  the char "a" is put 
into it
   put 1 into a
#####   a variable "a" is initiated with "1"
   send "tt" && the aaa of me to me
#####   the send command resolves to send "tt" && "a"
##### In this case there is also a variable a which contains "1" so 
this variable is passed
end t

if one uses :  send "tt" && quote & the aaa of me & quote
then the output is "a"

If "3,4" is put into a then the output of this handler is "3,4"

One can see that the params are resolved 1 time (hope I used the right 
expression as I am not a pro)

In the next case :

on t arg1,arg2
   put arg1
end t


on tt
   set the aa of me to 3,4
   send "t" && the aa of me to me
end tt

The custom property is set to "3,4"
The send command is resolved to send "tt" && "3,4"  which is as if 
passing 2 parameters
If one replaces set the aa of me to "3,4"  with set the aa of me to "3 
- 4" then
the send command resolves to send "tt" && "-1"

Try this :

on t arg1,arg2,arg3
   put arg1 && arg2 && arg3
end t


on tt
   set the aa of me to "a,b"
   put "3,4" into a
   send "t" && the aa of me to me
end tt

then the send command resolves to send "t" && "3,4,b"



> If this is a feature, it's a nasty one.
>
>     * From: Victor Eijkhout
>     * Subject: If this is a feature, it's a nasty one.
> * Date: Mon, 17 Mar 2003 15:22:12 -0800
>
> In other words, I consider this a bug.
>
> on mouseup
>   send "t 1" to me
> end mouseup
>
>
> on t a
>   set the a of me to "bar"
> end t
>
>
> Guess what property gets set on mouseup?
>
> And what's worse, I don't see how I can hack my way around it, because 
> <set the "a" of me> is illegal. Ok, take a different name for the 
> parameter, but I want to use logical sounding names.

The above case :

on mouseup
   send "t 1" to me
end mouseup


on t a
   set the a of me to "bar"
end t

Here a custom property is created with the name contained in a.
In this case if a custom property has a number as name or even a space 
as name then it can only be called by a variable containing the number 
or the space.

on t a
   set the a of me to "bar"
put the a of me	##### or    put 1 into b; put the b of me
end t


So as you can see it is rather consistent ( and if I'm wrong, shoot me 
:-)

Have a nice day,

WA