Switch to parse only single quotes by default + make quote command smart enough to escape captured quotemarks

src/vm/commands/quote.ts

@@ -46,6 +46,7 @@ export class Quote extends Command<{ with?: StrTerm }> {
                 }
 
                 sub = stripQuotemarkLayer(sub)
+                sub = sub.replaceAll(quote, `\\${quote}`)
                 return `${quote}${sub}${quote}`
             }
         }))

src/vm/lexer.ts

@@ -87,8 +87,9 @@ export class Lexer extends BehaviorSubject<LexToken> {
                 continue
             }
 
-            // We are either starting or ending an unescaped matching quote
+            // We are either starting or ending an unescaped matching quote.
-            if ( c === `'` || c === `"` ) {
+            // For now, only parse single quotes. Makes it nicer to type " in commands.
+            if ( c === `'` ) {
                 if ( c === this.inQuote ) {
                     this.inQuote = undefined
                     await this.emitToken('quote', true)