Hi David,


> On Apr 7, 2018, at 2:52 PM, David T. Lewis <lewis at mail.msen.com> wrote:
> 
>> On Sat, Apr 07, 2018 at 11:05:46AM -0700, tim Rowledge wrote:
>> 
>> 
>>> On 07-04-2018, at 7:44 AM, Eliot Miranda <eliot.miranda at gmail.com> wrote:
>>> 
>> 
>>> $ myvm spurreader.image
>>> squeak> 3 + 4!
>>> 7
>> 
>> Works on Pi/Raspbian once you remember the ! thing. Damn, I even read the code and missed that...
>> 
>> Seems to me that for the purposes of a headless terminal-access system we would probably not want the ! to be essential since it can only confuse users of 'regular' stuff. What do most terminal things do to continue a line? Isn't it \ on unix? What about others?
>> 
>> 
> 
> Ah, but wait. That spurreader REPL is pretty cool,

It is not.  It's just a very quick hack to test the threaded ffi and the simulator.

> but just in case
> they ever start handing out Ig Nobel awards (1) in the field of computer
> science (sic), I want to claim  prior art (2). I assert that I am the
> perpetrator of the most ghastly syntax mashup since invention of English,
> or possibly even (gasp!) Perl.
> 
> The $! delimiter means that the stuff before it should be interpreted as
> Smalltalk, so if you were to mix this up with unix shell syntax, it might
> look something like this:
> 
>    lewis at lewis-Gazelle-Pro:~/squeak/Squeak5.1$ run osp64.image
> 
>    sqsh> 3 + 4 !
>    7
>    sqsh> 3 + 4
>    7

So do you require long expressions occur on one line?

>    sqsh> 3 + 4! | /bin/cat
>    7
>    sqsh> exit
>    lewis at lewis-Gazelle-Pro:~/squeak/Squeak5.1$ 
> 
> So, in the above, $! is a chunk terminator but it is not essential in a
> context where the chunk can be disambiguated from other unixy syntax cruft.

The issue is how to input a multi line doit.  Do you allow it and hence either require each end of line to be escaped (Unix/C, end a non end line with \ CR) or I escaped and require an input terminator (st chunk's ! or Unix here script's repeat of the opening tag)?

> 
> Dave
> 
> (1) https://www.improbable.com/ig/winners/
> (2) http://wiki.squeak.org/squeak/1064
> 
>