Function linenoiseEditBackspace

tools/shell/linenoise.cpp:3235–3248

Backspace implementation. */

/* Backspace implementation. */
void linenoiseEditBackspace(struct linenoiseState* l) {
    if (l->pos > 0 && l->len > 0) {
        uint32_t newPos = prevChar(l);
        uint32_t charSize = l->pos - newPos;
        memmove(l->buf + newPos, l->buf + l->pos, l->len - l->pos);
        l->len -= charSize;
        l->pos = newPos;
        if (charSize > 1) {
            l->totalUTF8Chars--;
        }
        l->buf[l->len] = '\0';
        refreshLine(l);
    }
}

/* Delete the previous word, maintaining the cursor at the start of the
 * current word. */