Add drop, sort commands, start tail command; implement support for destructuredOrLines match type; misc fixes

src/vm/lexer.ts

@@ -10,6 +10,13 @@ export type LexToken = LexTerminator | LexInput
 
 const logger = log.getStreamLogger('lexer')
 
+const LITERAL_MAP: Record<string, string> = {
+    'n': '\n',
+    'r': '\r',
+    't': '\t',
+    's': ' ',
+}
+
 export class Lexer extends BehaviorSubject<LexToken> {
     private isEscape: boolean = false
     private inQuote?: '"'|"'"
@@ -49,7 +56,7 @@ export class Lexer extends BehaviorSubject<LexToken> {
 
             // We got the 2nd character after an escape
             if ( this.isEscape ) {
-                this.tokenAccumulator += c
+                this.tokenAccumulator += LITERAL_MAP[c] || c
                 this.isEscape = false
                 continue
             }