From 33a3f0e1345154954045278772f7ce88f22f1444 Mon Sep 17 00:00:00 2001
From: Ali Mohammad Pur <ali.mpfard@gmail.com>
Date: Thu, 31 Aug 2023 02:36:38 +0330
Subject: [PATCH] Shell: Implement close redirections in POSIX mode

Fixes #20631.
---
 Userland/Shell/PosixParser.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Userland/Shell/PosixParser.cpp b/Userland/Shell/PosixParser.cpp
index 4b1936bace..00646cab46 100644
--- a/Userland/Shell/PosixParser.cpp
+++ b/Userland/Shell/PosixParser.cpp
@@ -2103,7 +2103,14 @@ ErrorOr<RefPtr<AST::Node>> Parser::parse_io_file(AST::Position start_position, O
         auto is_less = io_operator == Token::Type::LessAnd;
         auto source_fd = fd.value_or(is_less ? 0 : 1);
         if (word->is_bareword()) {
-            auto maybe_target_fd = static_ptr_cast<AST::BarewordLiteral>(word)->text().bytes_as_string_view().to_int();
+            auto text = static_ptr_cast<AST::BarewordLiteral>(word)->text();
+            if (!is_less && text == "-"sv) {
+                return make_ref_counted<AST::CloseFdRedirection>(
+                    position,
+                    source_fd);
+            }
+
+            auto maybe_target_fd = text.bytes_as_string_view().to_int();
             if (maybe_target_fd.has_value()) {
                 auto target_fd = maybe_target_fd.release_value();
                 if (is_less)