rtensor

@@ -189,13 +189,21 @@ export const BUILTIN_FUNCS = {

         return args["3"].evaluate(ide);

     }]], {}),

     "clear": new MathsFunc([[[], function(args, de) {

+        try {

             iol.innerHTML = "";

+        } catch (_e) {

+            wf("\x1b[2J");

+        }

         return 0;

     }]], {}),

     "tostring": new MathsFunc([[[IDENT_AST], function(args, de) {

+        try {

             const oe = document.createElement("p");

             oe.innerText = args["0"].toString();

             iol.append(oe);

+        } catch (_e) {

+            console.log(args["0"].toString());

+        }

         return 0;

     }]], {}),

     "render": new MathsFunc([[[IDENT_AST], function(args, de) {

@@ -205,10 +213,15 @@ export const BUILTIN_FUNCS = {

         return 0;

     }]], {}),

     "html": new MathsFunc([[[IDENT_AST], function(args, de) {

+        const ah = `<span class="maths"><table></table>${args["0"].toHTML()}</span>`;

+        try {

             const oe = document.createElement("pre");

-        oe.innerText = `<span class="maths"><table></table>${args["0"].toHTML()}</span>`;

+            oe.innerText = ah;

             iol.append(oe);

             return 0;

+        } catch (_e) {

+            console.log(ah);

+        }

     }]], {}),

     "lhs": new MathsFunc([[[IDENT_AST], function(args, de) {

         const ce = args["0"];

@@ -319,6 +332,8 @@ export const BUILTIN_FUNCS = {

     }]], {}),

 };

+AST.BUILTIN_FUNCS = BUILTIN_FUNCS;

+

 function dl(v) {

     // required by maths_parser, but doesn't actually have to do anything

     ioLog(v);

@@ -1,5 +1,7 @@

 "use strict";

+import {AST} from "maths_ast.js";

+

 // maths symbols for which the intuitive name matches the HTML entity (mostly Greek)

 const ENT_SYM = [

     "alpha", "beta", "gamma", "delta", "epsilon", "zeta", "eta", "theta",

@@ -126,7 +128,7 @@ export const RTensorRender = {

                     `${cgify(sbu[0])}<sub>${sbu.slice(1).map(cgify).join("_")}</sub>`:

                     cgify(sbu[0]);

                 const spacify = sbu[0].replace(new RegExp(ucFromNcr("prime"), "g"), "").length >= 2 ? ` class="spaced"` : ``;

-                return (BUILTIN_FUNCS[this.v] != null || EXTRA_BUILTINS.has(this.v)) ?

+                return (AST.BUILTIN_FUNCS[this.v] != null || EXTRA_BUILTINS.has(this.v)) ?

                     `<var class="builtin">${it}</var>` :

                     `<var${spacify}>${it}</var>`;

                 break;