fix(_comp_initialize): fix completions of redirections without space

This is a regression by commit 38150db.  Although the shellcheck
issues a warning SC2295, $redir is intensionally a pattern here.

Fixes #832

bash_completion

@@ -1382,7 +1382,8 @@ _comp_initialize()
                 esac
                 ;;
         esac
-        cur=${cur##"$redir"}
+        # shellcheck disable=SC2295 # redir is a pattern
+        cur=${cur##$redir}
         _comp_compgen_filedir "$xspec"
         return 1
     fi

test/t/unit/test_unit_initialize.py

@@ -57,3 +57,10 @@ def test_redirect_2(self, bash, cmd1_empty_completion_setup, redirect):
             bash, "cmd1 %s f" % redirect, cwd="shared/default"
         )
         assert "foo" in completion
+
+    @pytest.mark.parametrize("redirect", "> >> 2> < &>".split())
+    def test_redirect_3(self, bash, redirect):
+        completion = assert_complete(
+            bash, "cmd1 %sf" % redirect, cwd="shared/default"
+        )
+        assert "foo" in completion