[Coco] What are the rules for naming basic09 variables ?

[Wayne Campbell]

I recall reading in the Basic09 manual there is a 29 character variable
name limit. String variables can be DIMd to 32767 characters length. OS-9
filenames are also limited to 29 characters I believe.

On Fri, Jul 26, 2019, 6:01 PM James Jones <jejones3141 at gmail.com> wrote:

> Looked a little more, and the only hard limit I've found so far is that as
> part of the lexical scanning, the name length is accumulated in the B
> register..
>
> On Fri, Jul 26, 2019 at 5:49 PM L. Curtis Boyle <curtisboyle at sasktel.net>
> wrote:
>
> > Actually, from what I remember, the length of a variable name is only
> > limited to free RAM. If you want to make a 100 character variable, it
> will
> > work (and if you made a second the same length but the last character
> > changed, they would still be considered unique). Of course, once you PACK
> > it, that is all gone anyways, but in the BASIC09 editor, it just consumes
> > more space in the variable name table.
> >
> > L. Curtis Boyle
> > curtisboyle at sasktel.net
> >
> >
> >
> > > On Jul 26, 2019, at 4:16 PM, coco at jechar.ca wrote:
> > >
> > >
> > > Thanks I will try some things based on these rules to confirm and then
> > let everyone know.
> > >
> > > On 2019-07-26 17:49, James Jones wrote:
> > >> I'd have to look or experiment to confirm the 29-character limit,
> > though I
> > >> have no reason not to believe it and it would make sense if symbol
> table
> > >> entries are 32 bytes. The rest I can confirm is exactly right.
> Variable
> > >> (and parameter) names must start with a letter, with the remaining
> being
> > >> either letters, digits, or underscores, optionally ending with dollar
> > sign
> > >> but only if its type is string.
> > >
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