Re: [Maxima-discuss] ((MPLUS SIMP FACTORED) 2 3) -> 3 + 2

[Robert D. <rob...@gm...>]

On Tue, Oct 29, 2024 at 11:33 AM Stavros Macrakis <mac...@gm...> wrote:

> For one thing, multiline strings don't stay within their matrix cell:

I'll try to look at that later -- the key is probably getting the
string formatter to start over at some nonzero offset from the left
margin.

> For another, I don't know how to get a 2d representation output as a string with embedded Newlines.

There are a couple of ways. Some version of this is exercised in the
tests for the display code -- grepping tests/*.mac for assignments to
display2d will find some or all of them.

expr: 1/(1 + 1/x);

foo1: printf (false, "~m", expr) $
stringp (foo1);
foo1;
map (cint, charlist (foo1));

Note that cint returns the character code for a 1-element string and
charlist returns a list of those; code 10 (decimal) is a newline.

Here is the other way:

S: make_string_output_stream ();
with_stdout (S, print (expr));
foo2: get_output_stream_string (S);
stringp (foo2);
foo2;
map (cint, charlist (foo2));
close (S);

Enjoy,

Robert