Match the loader's two-row floor, and record that an extension may name two media types

data-import/mimetype.py

@@ -16,7 +16,6 @@ SOURCE = "https://raw.githubusercontent.com/jshttp/mime-db/master/db.json"
 OUT = Path(__file__).resolve().parent.parent / "data" / "misc" / "mimetype.tsv"
 CACHE = Path(__file__).resolve().parent / "cache"
 COLUMNS = ["ext", "type"]
-# mime-db lists extensions in no particular order, so where the everyday one is not first, name it.
 FIXUPS = {"application/mp4": "mp4s", "audio/mpeg": "mp3", "audio/ogg": "ogg", "video/quicktime": "mov"}
 
 

data-import/tsv.py

@@ -5,14 +5,14 @@ from pathlib import Path
 
 
 def write(path, columns, rows):
-    """Write the rows as a TSV; the table needs a row, and every cell must be non-empty and free of tabs, newlines and braces."""
+    """Write the rows as a TSV; the table needs two rows, and every cell must be non-empty and free of tabs, newlines and braces."""
     lines = ["\t".join(columns)]
     for row in rows:
         cells = [str(row[c]) for c in columns]
         if not all(cells) or any(re.search(r"[\t\n{}]", c) for c in cells):
             raise ValueError(f"{path}: a cell is empty or holds a tab, newline or brace: {row}")
         lines.append("\t".join(cells))
-    if len(lines) < 2:
-        raise ValueError(f"{path}: has no rows below its header; a table is at least two rows")
+    if len(lines) < 3:
+        raise ValueError(f"{path}: has {len(lines) - 1} rows below its header; a table is at least two rows")
     Path(path).write_text("\n".join(lines) + "\n", encoding="utf-8")
     print(f"{path}: {len(lines) - 1} rows", file=sys.stderr)