CW_F_EXEC
if (!(ctx->i_flags & CW_F_EXEC))
main_ctx->i_flags |= CW_F_EXEC;
main_ctx->i_flags |= CW_F_PROG | CW_F_EXEC;
ctx->i_flags &= ~(CW_F_EXEC | CW_F_ECHO);
ctx->i_flags &= ~(CW_F_EXEC | CW_F_ECHO);