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fix: return empty JSON for markdown tables with blank headers #638

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fix: return empty JSON for markdown tables with blank headers #638

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42ee078
fix: return empty JSON for markdown tables with blank headers
santhreal Jul 18, 2026
a21b757
Treat multi-column blank markdown headers as empty tables.
santhreal Jul 18, 2026
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3 changes: 2 additions & 1 deletion src/chonkie/utils/table_converter.py
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Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,8 @@ def _read_markdown_table(table_content: str):
) from e

lines = [line.strip("|").strip() for line in table_content.split("\n") if line.strip()]
if len(lines) < 2:
# Empty/blank headers (incl. multi-col "| | | |") yield EmptyDataError from pandas.
if len(lines) < 2 or not lines[0].replace("|", "").strip():
return pd.DataFrame()

csv_content = "\n".join([lines[0]] + lines[2:])
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6 changes: 6 additions & 0 deletions tests/test_table_converter.py
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Expand Up @@ -68,6 +68,12 @@ def test_empty_table(self) -> None:
"""Test empty and header-only tables."""
assert markdown_table_to_json("") == []
assert markdown_table_to_json("| Name |\n|------|") == []
# Empty header cells must not leak pandas EmptyDataError.
assert markdown_table_to_json("|\n|-|") == []
assert markdown_table_to_json("||\n|-|") == []
# strip("|") leaves inner pipes for 3+ blank columns; still empty JSON.
assert markdown_table_to_json("| | | |\n|---|---|---|") == []
assert markdown_table_to_json("| | | | |\n|---|---|---|---|") == []


class TestHTMLTableToJson:
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