Fix find with path not ending with "/" (#668)

Author: martindurant

Diff for: gcsfs/core.py

@@ -1519,10 +1519,17 @@ async def _find(
             objects, _ = await self._do_list_objects(
                 bucket, delimiter="", prefix=_prefix, versions=versions
             )
+        else:
+            _prefix = prefix
 
         dirs = {}
         cache_entries = {}
+        path2 = path.rstrip("/") + "/"
 
+        if not prefix:
+            objects = [
+                o for o in objects if o["name"].startswith(path2) or o["name"] == path
+            ]
         for obj in objects:
             parent = self._parent(obj["name"])
             previous = obj

Diff for: gcsfs/tests/test_core.py

@@ -1574,3 +1574,9 @@ def test_write_x_mpu(gcs):
         with gcs.open(fn, mode="xb", block_size=5 * 2**20) as f:
             f.write(b"0" * 5 * 2**20)
             f.write(b"done")
+
+
+def test_near_find(gcs):
+    gcs.touch(f"{TEST_BUCKET}/inner/aa/file")
+    out = gcs.find(f"{TEST_BUCKET}/inner/a")
+    assert not out