c_lflag           511 src/subshell/common.c         raw_mode.c_lflag &= ~ICANON;    /* Disable line-editing chars, etc.   */
c_lflag           512 src/subshell/common.c         raw_mode.c_lflag &= ~ISIG;      /* Disable intr, quit & suspend chars */
c_lflag           513 src/subshell/common.c         raw_mode.c_lflag &= ~ECHO;      /* Disable input echoing              */