Function refreshShowHints

linenoise.c:1289–1326

Helper of refreshSingleLine() and refreshMultiLine() to show hints * to the right of the prompt. Now uses display widths for proper UTF-8. */

/* Clear all remembered fold ranges. */
static void linenoiseFoldClear(struct linenoiseState *l) {
    l->fold_count = 0;
}

/* Remove one remembered fold range. */
static void linenoiseFoldRemove(struct linenoiseState *l, int j) {
    memmove(l->fold_start+j,l->fold_start+j+1,
            sizeof(size_t)*(l->fold_count-j-1));
    memmove(l->fold_end+j,l->fold_end+j+1,
            sizeof(size_t)*(l->fold_count-j-1));
    l->fold_count--;
}

/* Return true if [pos,pos+len) overlaps any folded range. */
static int linenoiseRangeOverlapsFold(struct linenoiseState *l, size_t pos, size_t len) {
    size_t end = pos + len;
    int j;

    for (j = 0; j < l->fold_count; j++) {
        if (end > l->fold_start[j] && pos < l->fold_end[j])
            return 1;
    }
    return 0;
}

/* Adjust fold ranges after an insertion. If insertion somehow lands inside a
 * fold, remove that fold because it no longer maps to an unchanged range. */
static void linenoiseAdjustFoldsAfterInsert(struct linenoiseState *l, size_t pos, size_t len) {
    int j = 0;

    while (j < l->fold_count) {
        if (pos <= l->fold_start[j]) {
            l->fold_start[j] += len;
            l->fold_end[j] += len;
            j++;
        } else if (pos < l->fold_end[j]) {
            linenoiseFoldRemove(l,j);
        } else {
            j++;
        }
    }