1 files changed, 15 insertions, 1 deletions
diff --git a/src/ninep/ctl.zig b/src/ninep/ctl.zig
index 31382279..92342525 100644
--- a/src/ninep/ctl.zig
+++ b/src/ninep/ctl.zig
@@ -1996,7 +1996,7 @@ test "pty/ctl exec in a directory that is gone fails ENOENT; a shell that cannot
     try testing.expectEqualStrings("shell: access denied", p.fs.late_failure[0..p.fs.late_failure_len]);
 }
 
-test "a script whose interpreter is not there: Tty refuses it up front, only an err logged" {
+test "a script whose interpreter is not there: Tty refuses it up front, only an err logged, and pty/ctl exec keeps the running shell" {
     const p = try th.withTerm(testing.allocator);
     defer p.deinit();
     const Starting = struct {
@@ -2023,6 +2023,20 @@ test "a script whose interpreter is not there: Tty refuses it up front, only an
     try testing.expect(th.logHas(p, "Tty: interpreter /no/such/interp not found\n"));
     try testing.expect(!th.logHas(p, "\nmsg "));
     try testing.expect(!th.logHas(p, "\ndel "));
+    // The shell to start again is that script: refused before the running
+    // one goes.
+    const id = p.paneBySerial(serial).?;
+    p.panes[id].?.shell = try p.gpa.dupe(u8, try std.fmt.bufPrint(&line, "{s}/bad", .{dir}));
+    p.setCwd(id, dir);
+    const exec_refused = wr(p, Node.of(serial, .pty_ctl), "exec\n");
+    try testing.expectEqual(E.NOENT, exec_refused.errno());
+    try testing.expectEqualStrings("exec: interpreter /no/such/interp not found", exec_refused.reply.ename);
+    // One the host found could not start (the script changed after): said
+    // with the interpreter's name, and the running shell is not gone.
+    p.fs.late_failure_len = 0;
+    p.restartFailed(@intCast(id), error.InterpreterNotFound);
+    try testing.expectEqualStrings("shell: interpreter /no/such/interp not found", p.fs.late_failure[0..p.fs.late_failure_len]);
+    try testing.expect(!p.panes[id].?.shell_failed);
 }
 
 test "every EINVAL a write gets says why, in its err record too; DEL is a control character in a line" {