Adds new filters

- Begin terminals
- End terminals
- All terminals
- Negate
- AND

1 files changed, 27 insertions, 0 deletions

diff --git a/main/lex.go b/main/lex.go
index fdb3b59..91231ed 100644
--- a/main/lex.go
+++ b/main/lex.go
@@ -116,7 +116,13 @@ const (
 	TokenDot // .
 	TokenAst // *
 	TokenBar // |
+	TokenAnd // &&
+	TokenHat // ^
+	TokenDollar // $
 	TokenQuestion // ?
+	TokenHatDollar // ^$
+	TokenExclamation // !
+	TokenTilde // ~
 	TokenPatternStringIndex // A string index in a pattern
 	TokenPatternIntegerIndex // An integer index in a pattern
 )
@@ -205,6 +211,27 @@ func lexCommand(l *lexer) stateFunc {
 		case '}':
 			l.emit(TokenRBrace)
 			return lexCommandEnd
+		case '&':
+			if l.accept("&") {
+				l.emit(TokenAnd)
+				return lexCommand
+			}
+		case '^':
+			if l.accept("$") {
+				l.emit(TokenHatDollar)
+			} else {
+				l.emit(TokenHat)
+			}
+			return lexCommand
+		case '$':
+			l.emit(TokenDollar)
+			return lexCommand
+		case '!':
+			l.emit(TokenExclamation)
+			return lexCommand
+		case '~':
+			l.emit(TokenTilde)
+			return lexCommand
 	}
 	if isAlpha(r) {
 		l.emit(TokenCommand)