router with strict_slashes disabled doesn't match URL without slash

[pjulian]

Under v2.1.0 and earlier, strict_slashes=False could be used to make a routing rule for /foo/ match /foo as well.
This appears to have changed in 2.2.0. (NOTE: opposite of what was reported in bug report -> #2467)

Example flask app:

# app.py
import flask
app = flask.Flask(__name__)
app.url_map.strict_slashes = False

@app.route("/foo/")
def foo():
    return "hi"

... And then flask run and curl localhost:5000/foo. Under v2.1.0 you should see hi, but under 2.2.0, a 404.

My app currently sets strict_slashes = False and all routes are returning a 404.

Environment:

• Python version: 3.9
• Werkzeug version: 2.2.x

[pgjones]

Duplicate of #2478. Please reopen if you disagree.

[pjulian]

I might possibly agree that #2478 could be a bug report of the same issue ...

Correct me if I'm wrong, but the resolution of #2478 appears to be that the behavior WAS wrong before and has been FIXED in #1074? And all that was needed was to just update the change log to reflect an intentional change/fix in behavior?

The reporter in #2478 seems to be okay with simply updating the change log, but I'm not sure if I agree.

IMO, EITHER of the following should resolve to the same route (currently the latter is treated as if strict_slashes were True and causing /foo to return a 404):

Reported in #2467:

# app.py
import flask
app = flask.Flask(__name__)
app.url_map.strict_slashes = False

@app.route("/foo")
def foo():
    return "hi"

Being reported here #2482 (and I guess also possibly here #2478):

# app.py
import flask
app = flask.Flask(__name__)
app.url_map.strict_slashes = False

@app.route("/foo/")
def foo():
    return "hi"

[pgjones]

I see. I think #2487 is the solution to these issues. There are really three options people expect.