Function dedupe_chars

src/table.py:871–891

Removes duplicate chars — those sharing the same text, fontname, size, and positioning (within `tolerance`) as other characters in the set.

(chars: list, tolerance=1)

def dedupe_chars(chars: list, tolerance=1) -> list:
    """
    Removes duplicate chars — those sharing the same text, fontname, size,
    and positioning (within `tolerance`) as other characters in the set.
    """
    key = itemgetter("fontname", "size", "upright", "text")
    pos_key = itemgetter("doctop", "x0")

    def yield_unique_chars(chars: list):
        sorted_chars = sorted(chars, key=key)
        for grp, grp_chars in itertools.groupby(sorted_chars, key=key):
            for y_cluster in cluster_objects(
                list(grp_chars), itemgetter("doctop"), tolerance
            ):
                for x_cluster in cluster_objects(
                    y_cluster, itemgetter("x0"), tolerance
                ):
                    yield sorted(x_cluster, key=pos_key)[0]

    deduped = yield_unique_chars(chars)
    return sorted(deduped, key=chars.index)


def line_to_edge(line):