File names with newline character break sync

[sedrubal]

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Expected behaviour

Files with a new line character should be synced like normal files or a clear error message should be shown.

Actual behaviour

This error messages are shown:

Steps to reproduce

1. In a folder that gets synced by nextcloud desktop client run:

$ touch "foo
bar"

2. Wait until the directory is synced or trigger a force sync

Client configuration

Client version: 3.2.4 (e5447b5)

Operating system: Linux (Arch Linux)

OS language: en_US.UTF-8

Qt version used by client package (Linux only, see also Settings dialog): 5.15.2

Client package (From Nextcloud or distro) (Linux only): community/nextcloud-client 3.2.4-1

Installation path of client: /

Server configuration

Nextcloud version: 17.0.0.9

Storage backend (external storage): ??

Logs

1. Client logfile: https://gist.github.com/sedrubal/214f5c145f9bc925b8352dc4711ea2cb

2. Web server error log: -

3. Server logfile: nextcloud log (data/nextcloud.log): -

[mgallien]

thanks for the report
from what I can see there are two places where we do not handle that case as well as we should