Function linenoiseBeep

tools/shell/linenoise.cpp:1032–1035

Beep, used for completion when there is nothing to complete or when all * the choices were already shown. */

/* Beep, used for completion when there is nothing to complete or when all
 * the choices were already shown. */
static void linenoiseBeep(void) {
    fprintf(stderr, "\x7");
    fflush(stderr);
}

void linenoiseSetHighlightCallback(linenoiseHighlightCallback* fn) {
    highlightCallback = fn;