First run of serve is not respecting --no-default-folder

[Fryuni]

What happened?

When running syncthing serve --no-default-folder on a machine where Syncthing was never executed before it still generates the default "Sync" folder.

By the --no-default-folder flag docs, that shouldn't happen.

Syncthing version

v1.27.5 "Gold Grasshopper" (go1.22.1 darwin-amd64) brew@Sonoma 2024-03-25 03:45:14 UTC [noupgrade]

Platform & operating system

MacOS amd64

Browser version

No response

Relevant log output

[start] 2024/04/07 10:32:57 INFO: syncthing v1.27.5 "Gold Grasshopper" (go1.22.1 darwin-amd64) brew@Sonoma 2024-03-25 03:45:14 UTC [noupgrade]
[QCDML] 2024/04/07 10:32:57 INFO: My ID: <DEVICE ID>
[QCDML] 2024/04/07 10:32:58 INFO: Single thread SHA256 performance is 1174 MB/s using minio/sha256-simd (1162 MB/s using crypto/sha256).
[QCDML] 2024/04/07 10:32:59 INFO: Hashing performance is 752.17 MB/s
[QCDML] 2024/04/07 10:32:59 INFO: Detected upgrade from v1.27.1 to v1.27.5
[QCDML] 2024/04/07 10:32:59 INFO: Overall send rate is unlimited, receive rate is unlimited
[QCDML] 2024/04/07 10:32:59 INFO: Stored folder metadata for "default" is 2086h0m0s old; recalculating
[QCDML] 2024/04/07 10:32:59 INFO: Using discovery mechanism: global discovery server https://discovery.syncthing.net/v2/?noannounce&id=<ID 2>
[QCDML] 2024/04/07 10:32:59 INFO: Using discovery mechanism: global discovery server https://discovery-v4.syncthing.net/v2/?nolookup&id=<ID 2>
[QCDML] 2024/04/07 10:32:59 INFO: Using discovery mechanism: global discovery server https://discovery-v6.syncthing.net/v2/?nolookup&id=<ID 2>
[QCDML] 2024/04/07 10:32:59 INFO: Using discovery mechanism: IPv4 local broadcast discovery on port 21027
[QCDML] 2024/04/07 10:32:59 INFO: Using discovery mechanism: IPv6 local multicast discovery on address [ff12::8384]:21027
[QCDML] 2024/04/07 10:32:59 INFO: Ready to synchronize "Default Folder" (default) (sendreceive)
[QCDML] 2024/04/07 10:32:59 INFO: Relay listener (dynamic+https://relays.syncthing.net/endpoint) starting
[QCDML] 2024/04/07 10:32:59 INFO: GUI and API listening on 127.0.0.1:8384
[QCDML] 2024/04/07 10:32:59 INFO: Access the GUI via the following URL: http://127.0.0.1:8384/
[QCDML] 2024/04/07 10:32:59 INFO: QUIC listener ([::]:22000) starting
[QCDML] 2024/04/07 10:32:59 INFO: My name is "Lotus Mac"
[QCDML] 2024/04/07 10:32:59 INFO: Cleaned away old file config.xml.v0
[QCDML] 2024/04/07 10:32:59 INFO: Completed initial scan of sendreceive folder "Default Folder" (default)
[QCDML] 2024/04/07 10:32:59 INFO: TCP listener ([::]:22000) starting
[QCDML] 2024/04/07 10:33:06 INFO: Sent usage report (version 3)
[QCDML] 2024/04/07 10:33:09 INFO: quic://0.0.0.0:22000 detected NAT type: Symmetric NAT
[QCDML] 2024/04/07 10:33:30 INFO: New external port opened: external TCP address(es) [<MY IP>] to local address [::]:22000.
[QCDML] 2024/04/07 10:33:30 INFO: Detected 1 NAT service
[QCDML] 2024/04/07 10:35:03 INFO: Joined relay relay://129.148.29.67:22067

[er-pa]

Perhaps the brew package (seems to be the source?) changes/overwrites defaults and prevents you from supplying arguments. What you show isn't really the typical behaviour for absolutely no previous config present using the default Syncthing binary. I also cannot reproduce it using the default binary.

[calmh]

Yeah... log output is clearly not the first time it's run for that account, and I also cannot reproduce.

[Fryuni]

Yeah... log output is clearly not the first time it's run for that account, and I also cannot reproduce.

It was though...
Syncthing was never even installed on this machine. I freshly formatted it.

But ok... nothing really that annoying.

[calmh]

I mean, it even shows which version it was upgraded from and how long ago metadata was last updated...