Fixes issue parsing comments in args with quote

Fixed bug where the quoted token did not have `IsQuoted` set to `true`.
I added an additional lex fixture which shows both the existing lexer
and new scanner handle the case correctly.

Author: ornj

lex_test.go

@@ -226,6 +226,20 @@ var lexFixtures = []lexFixture{
 		{";", 15},
 		{"}", 16},
 	}},
+	{"comments-between-args", []tokenLine{
+		{"http", 1},
+		{"{", 1},
+		{"#comment 1", 1},
+		{"log_format", 2},
+		{"#comment 2", 2},
+		{"\\#arg\\ 1", 3},
+		{"#comment 3", 3},
+		{"#arg 2", 4},
+		{"#comment 4", 4},
+		{"#comment 5", 5},
+		{";", 6},
+		{"}", 7},
+	}},
 }
 
 func TestLex(t *testing.T) {

scanner.go

@@ -241,7 +241,7 @@ func (s *Scanner) Scan() (Token, error) { //nolint: funlen, gocognit, gocyclo
 			lexState = inWord
 		case inQuote:
 			if r == quote {
-				return Token{Text: tok.String(), Line: s.tokenStartLine}, nil
+				return Token{Text: tok.String(), Line: s.tokenStartLine, IsQuoted: true}, nil
 			}
 			if r == "\\"+quote {
 				r = quote