feat:LaTeX conversion of a list of expressions.

Author: antononcube

lib/CortexJS.rakumod

@@ -85,9 +85,24 @@ sub cortex-js-call($func, $expr) is export {
     return $ce.call($func, $expr);
 }
 
-sub to-latex($expr) is export {
+sub to-latex($expr,
+             :$sep is copy = Whatever,
+             Bool:D :b(:$bracketed) = True,
+             Str:D :$left-bracket = '$',
+             Str:D :$right-bracket = '$'
+             ) is export {
     start-ce() without $ce;
-    return $ce.to-latex($expr);
+
+    if $sep.isa(Whatever) { $sep = ', \: ' }
+    die 'The argument $sep is expected to be a string or Whatever' unless $sep ~~ Str:D;
+
+    my $res = do if $expr ~~ (Array:D | List:D | Seq:D) && $expr.all ~~ (Array:D | List:D | Seq:D) {
+        $expr.map({ $ce.to-latex($_) }).join($sep)
+    } else {
+        $ce.to-latex($expr)
+    }
+
+    return $bracketed ?? $left-bracket ~ $res ~ $right-bracket !! $res;
 }
 
 END {