[Coco] Color Basic Renumber

[Arthur Flexser]

It would probably be easier to extract the RENUM code from the Extended
Basic ROM and adapt it to be a stand-alone program.  I recall setting the
display window to where a program resided in memory and watching RENUM
occur.  The Basic program looks like a balloon suddenly blowing up and then
shrinking.  That's because the algorithm first expands all line number
references within lines to 5 bytes, so as to be able to accommodate a
possible 5-digit substitute that results from renumbering.  Then after
renumbering, all that extra space is removed.

Art

On Tue, Jan 27, 2015 at 4:29 PM, Allen Huffman <alsplace at pobox.com> wrote:

> > On Jan 27, 2015, at 3:25 PM, Stephen H. Fischer <SFischer1 at Mindspring.com>
> wrote:
> >
> > I am unable to find any RENUM programs in Rainbow. Either by searching
> the Text Searchable Rainbow Index or using Google search on Aarons site
> which includes Rainbow, 68 Micro Journal, and six more magazines.
>
> Crap. Maybe it was Hot CoCo or Color Computer. If it was one of those, it
> will be easy to find. I think I had only one or two of each before I chose
> Rainbow as my magazine.
>
> Nick, do you know much about the BASIC tokenizer format? It would be
> trivial to write a renumber program as an exercise. You would have to do
> some parsing but there is a small number of tokens that could have line
> numbers after them. It might be as simple as starting at a line, scanning
> through and stopping at each potential token to see if a line number is
> after it. By making as list, it would be easy to renumber.
>
> Heck, in my CoCoSDC program, I wanted a way to renumber just a range of my
> program. Maybe I will have to write SuperRenum for us.
>
>                 -- A
>
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco
>