What about chars for vertical tab, bell, etc? What is whitespace and what is an error is a tricky question. I would be against any change in this area. It has been this way for 30 years.
Fancier scripts (literate programming) are great, but FF is the tip of that iceberg. I suggest that a script preprocessor is the right solution. On Sun, Jul 18, 2021 at 4:55 PM chris burke <[email protected]> wrote: > 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 <[email protected]> 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 <[email protected]> > 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 > > >>> > ---------------------------------------------------------------------- > > >>> For information about J forums see > http://www.jsoftware.com/forums.htm > > >> > > >> -- > > >> This email has been checked for viruses by AVG. > > >> https://www.avg.com > > >> > > >> ---------------------------------------------------------------------- > > >> For information about J forums see > http://www.jsoftware.com/forums.htm > > >> > > > ---------------------------------------------------------------------- > > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > > > -- > > This email has been checked for viruses by AVG. > > https://www.avg.com > > > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
