oddily ncCF datasets cannot be quoted

erddapy/core/url.py

@@ -25,8 +25,12 @@
 
 def quote_url(url: str) -> str:
     """Quote URL args for modern ERDDAP servers."""
-    # We should always quote for queries.
-    if "?" in url and "/erddap/search/" not in url:
+    # No idea why csv must be quoted in 2.23 but ncCF doesn't :-/
+    do_not_quote = ["/erddap/search/", "ncCF"]
+    if any(True for string in do_not_quote if string in url):
+        return url
+    # We should always quote some queries.
+    if "?" in url:
         base, unquoted = url.split("?")
         url = f"{base}?{parse.quote_plus(unquoted)}"
     return url

tests/test_to_objects.py

@@ -146,6 +146,19 @@ def test_to_xarray_tabledap(dataset_tabledap):
     assert ds["temperature"].name == "temperature"
 
 
+@pytest.mark.web
+def test_to_xarray_cannot_be_quoted():
+    """Test dataset that failed when quoted."""
+    e = ERDDAP(server="https://erddap.aoos.org/erddap/", protocol="tabledap")
+    e.dataset_id = "kotzebue-alaska-water-level"
+    e.constraints = {
+        "time>=": "2018-09-05T21:00:00Z",
+        "time<=": "2019-07-10T19:00:00Z",
+    }
+    ds = e.to_xarray()
+    assert isinstance(ds, xr.Dataset)
+
+
 @pytest.mark.web
 def test_to_xarray_requests_kwargs(dataset_tabledap):
     """Test converting tabledap to an xarray Dataset with manual timeout."""