Add the table node: rows TSV, key and name selection, linked tables drawn consistently, and the choice-of-rows fence

inline.go

@@ -69,9 +69,15 @@ func isTemplate(arg string) (bool, error) {
 		}
 		return true, nil
 	}
-	if i := strings.IndexAny(arg, `[]}"`); i >= 0 {
+	if i := strings.IndexAny(arg, `}"`); i >= 0 {
 		return false, fmt.Errorf("%q holds a %q, which no path may, and it is not valid JSON, so it names no template either", arg, arg[i:i+1])
 	}
+	if strings.HasPrefix(strings.TrimSpace(arg), "[") {
+		return false, fmt.Errorf(`%q starts with "[" and is not valid JSON, so it names no template; a path starts with a name`, arg)
+	}
+	if _, err := splitPath(arg); err != nil {
+		return false, err
+	}
 	if path := strings.TrimLeft(arg, "/"); path != arg && path != "" {
 		return false, pathAdvice(path, fmt.Sprintf("path %s starts with /, and every path starts at the root already", arg))
 	}