Format errors in REPL based on source

2 files changed, 6 insertions, 4 deletions

diff --git a/docs/bqn.js b/docs/bqn.js
index 329dd83c..3c6d4c5b 100644
--- a/docs/bqn.js
+++ b/docs/bqn.js
@@ -82,8 +82,7 @@ let run = (B,O,S) => { // Bytecode, Objects, Sections/blocks
 
 // Runtime
 let assertFn = pre => (x,w) => {
-  if (x!==1) throw Error(pre + (has(w)?(pre?": ":"")+w.join(""):""));
-  return x;
+  if (x!==1) throw {src:pre, message:w}; return x;
 }
 let arr = (r,sh) => {r.sh=sh;return r;}
 let list = l => arr(l,[l.length]);
diff --git a/docs/repl.js b/docs/repl.js
index 05f870a9..14927537 100644
--- a/docs/repl.js
+++ b/docs/repl.js
@@ -14,9 +14,12 @@ let repl = ()=>{
     try {
       doc.rslt.textContent=fmt(bqn(s));
     } catch(e) {
-    //if (console&&console.error) console.error(e.stack);
+      let s=e.src, w=e.message, i=-1;
+      if (s==="Compiler"&&w.sh[0]===2) [i,w]=w;
+      if (s==="!") w=w?fmt(w).replace(/^/gm,'! '):'! Error';
+      else w=w.sh?w.join(""):w;
       doc.rslt.classList.add('err');
-      doc.rslt.textContent=e.message||'Error';
+      doc.rslt.textContent=w;
     }
   }, 0);
 }