It looks like FF is not supported in linux scripts, e.g.
9!:14''
j903/j64avx2/linux/beta-l/commercial/
www.jsoftware.com/2021-06-17T13:00:33/clang-10-0-0/SLEEF=1
('1',FF,'2') fwrite 't1.ijs'
3
0!:1 <'t1.ijs'
1
2
|spelling error
| 1
2
| ^
|[-0] t1.ijs
I think FF is normally considered to be whitespace, so it can be treated
like LF.
On Sun, Jul 18, 2021 at 1:15 PM Henry Rich <henryhr...@gmail.com> wrote:
> Every bytecode that is not an ASCII graphic or SP, CR, TAB, or LF will
> cause a spelling error if encountered as a word:
>
> ". 12 { a.
> |spelling error
> |
> The question here is whether FF is enough of an industry-standard to be
> called whitespace, like TAB.
>
> I don't know myself. I have looked at the code & decided that making FF
> look like LF for script purposes is not too hard, while making it look
> like TAB takes more work.
>
> But I am loath to make any change at all until I understand why FF works
> sometimes and not others. As I see it, any script containing FF would
> fail when loaded, unless the FF were buried inside a string. If you
> have cases where this is not so I want to know where the FF is
> disappearing to.
>
> In the meantime you can use Eric's trick of stripping FF during load.
>
> Henry Rich
>
>
>
> On 7/18/2021 3:56 PM, Eric Iverson wrote:
> > FF char (12{a.) gets a spelling error if in a script that is loaded in
> > linux. I think this would be the same as in windows but have not tested.
> >
> > There are lots of values that will give spelling errors. I am not sure it
> > makes sense to special case (i.e. ignore FF).
> >
> > If the FF is desired for its behavior in an editor, that is OK. But it
> and
> > perhaps other chars should be stripped out before being fed to load.
> >
> > On Sun, Jul 18, 2021 at 3:39 PM Henry Rich <henryhr...@gmail.com> wrote:
> >
> >> I will look into turning FF into LF when a script is read, & will do it
> >> if there are no problems.
> >>
> >> Does Linux do something to the FF? I don't see why you don't get the
> >> same error there as on Windows.
> >>
> >> Henry Rich
> >>
> >> On 7/18/2021 7:58 AM, Michal Wallace wrote:
> >>> I sometimes use the ^L character (FF, or 12{a.) in source code files to
> >>> divide my code into "pages".
> >>>
> >>> (I have emacs set up so that I can page back and forth showing one page
> >> at
> >>> a time without scrolling, so the top line of the page is always at the
> >> top
> >>> of the screen when that page is showing, etc.)
> >>>
> >>> I've done this with J source code with no problems in the past. It
> works
> >>> fine in jqt and in jconsole on linux, but I just discovered that if I
> try
> >>> to load a J script written this way in the windows version of jconsole,
> >> it
> >>> gives me a spelling error on that character.
> >>>
> >>> Is this something that could be officially supported, or do I need to
> >>> change my ways? :D
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