Remove legacy .jsono format extension

The homepage routes now only accept .json, and the row view no longer
redirects .jsono to .json?_shape=objects. The .jsono extension was
superseded by ?_shape= and returned output identical to .json.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GrHZSypDfMnym1tM5XJAFZ

datasette/app.py

@@ -2514,8 +2514,8 @@ class Datasette:
         def add_route(view, regex):
             routes.append((regex, view))
 
-        add_route(IndexView.as_view(self), r"/(\.(?P<format>jsono?))?$")
-        add_route(IndexView.as_view(self), r"/-/(\.(?P<format>jsono?))?$")
+        add_route(IndexView.as_view(self), r"/(\.(?P<format>json))?$")
+        add_route(IndexView.as_view(self), r"/-/(\.(?P<format>json))?$")
         add_route(permanent_redirect("/-/"), r"/-$")
         add_route(favicon, "/favicon.ico")
 

datasette/views/row.py

@@ -21,7 +21,6 @@ from datasette.utils import (
     InvalidSql,
     make_slot_function,
     path_from_row_pks,
-    path_with_added_args,
     path_with_format,
     path_with_removed_args,
     to_css_class,
@@ -209,18 +208,6 @@ class RowView(BaseView):
         end = time.perf_counter()
         data["query_ms"] = (end - start) * 1000
 
-        # Special case for .jsono extension - redirect to _shape=objects
-        if format_ == "jsono":
-            return self.redirect(
-                request,
-                path_with_added_args(
-                    request,
-                    {"_shape": "objects"},
-                    path=request.path.rsplit(".jsono", 1)[0] + ".json",
-                ),
-                forward_querystring=False,
-            )
-
         if format_ in self.ds.renderers.keys():
             # Dispatch request to the correct output format renderer
             # (CSV is not handled here due to streaming)

existing-api.md

@@ -25,8 +25,7 @@ directory: every claim below is based on the route table in `datasette/app.py`
 
 - Most read endpoints are registered with an optional format suffix:
   `/(...)(\.(?P<format>json))?$`. The bare path returns HTML; the `.json`
-  extension returns JSON. The homepage additionally accepts the legacy
-  `.jsono` extension, which returns identical JSON (app.py:2517-2518).
+  extension returns JSON.
 - Table, row and query routes accept any `\w+` format extension; formats other
   than the built-in `html`, `json`, `csv`, `blob` must be provided by a plugin
   via `register_output_renderer`, otherwise the request 404s.
@@ -772,8 +771,7 @@ tilde-encoded primary key values (rowid for rowid tables).
 - **Foreign-key label expansion does not apply to row JSON** — `_labels` has
   no effect here; expansion happens only in the HTML path
   (views/row.py:445-475).
-- `_shape`, `_json`, `_nl`, `_json_infinity`, `_ttl` apply. A `.jsono`
-  request redirects to `.json?_shape=objects`.
+- `_shape`, `_json`, `_nl`, `_json_infinity`, `_ttl` apply.
 
 ### The .blob format
 

stable-api-recommendations.md

@@ -233,8 +233,10 @@ Concerns:
   `_labels=on/off`, `?all=1`, `is_write=1|0|true|false|t|f|yes|no|on|off`,
   `_nocount=1`. Adopt one accepted set (the query-list parser at
   query_helpers.py:81-94 is a good candidate) and apply it everywhere.
-- **`.jsono`** survives on the homepage route (identical output to `.json`)
-  and as a row-view redirect. Remove it at 1.0; it is pure legacy.
+- ~~**`.jsono`** survives on the homepage route (identical output to `.json`)
+  and as a row-view redirect. Remove it at 1.0; it is pure legacy.~~
+  ✅ Removed: the homepage routes only accept `.json` and the row-view
+  redirect is gone.
 - **`_json` is overloaded:** on GET it is a renderer option naming a column
   to parse as JSON (repeatable); on canned-query POST a `_json` body field
   forces a JSON response. Two unrelated meanings for one name.