allow _ as silence

packages/mondo/mondo.mjs

@@ -20,7 +20,8 @@ export class MondoParser {
     open_curly: /^\{/,
     close_curly: /^\}/,
     number: /^-?[0-9]*\.?[0-9]+/, // before pipe!
-    op: /^[*/:!@%?+-]|^\.{2}/, // * / : ! @ % ? ..
+    // "+" and "-" might be added here, but then "-" won't work as silence anymore..
+    op: /^[*/:!@%?]|^\.{2}/, // * / : ! @ % ? ..
     // dollar: /^\$/,
     pipe: /^#/,
     stack: /^[,$]/,

packages/mondough/mondough.mjs

@@ -28,6 +28,7 @@ let nope = (...args) => args[args.length - 1];
 let lib = {};
 lib['nope'] = nope;
 lib['-'] = silence;
+lib['_'] = silence;
 lib['~'] = silence;
 lib.curly = stepcat;
 lib.square = (...args) => stepcat(...args).setSteps(1);

packages/superdough/superdough.mjs

@@ -575,7 +575,7 @@ export const superdough = async (value, t, hapDuration, cps) => {
 
   let audioNodes = [];
 
-  if (['-', '~'].includes(s)) {
+  if (['-', '~', '_'].includes(s)) {
     return;
   }
   if (bank && s) {