Deltachat-android: Problem in the group name

[ghost]

• Operating System (Linux/Mac/Windows/iOS/Android): Android 10
• Delta Chat Version: 1.12.2
• Expected behavior: When I paste a multiline phrase into the group name, it allows me to set a profile picture and receive any name changes via system messages and not normal messages.
• Actual behavior: You cannot set the group image and receive system messages as normal messages.
• Steps to reproduce the problem: Copy any multi-line message and paste it into the group name.

• Screenshots:
  

• Logs:

[gerryfrancis]

@AndreazLattmann Thank you for your report. It took a while for me to understand what you have meant, but I can confirm your finding, that is a tricky one! Actually the problem does occur when the following steps are performed:

-- Create a group with at least two members (you and another contact). The group must be named with a multi-line phrase, e.g. by copying a short text including line breaks into the group name field.
-- Send the introduction message to the group member(s).
-- Rename the group.

It is not necessary to apply a picture to the group at all to reproduce the issue.

[ghost]

@gerryfrancis it was a bit difficult to explain this error.😅

[gerryfrancis]

@AndreazLattmann Never mind, it is a great catch anyway! :+1:

[Hocuri]

Actually, I would expect that multiline group names are just rejected or all newlines are removed.

[gerryfrancis]

@Hocuri You are right, nevertheless it would be good to know why renaming the group is causing that behavior (sending a normal message instead of a system message). (I would like to find out, but unfortunately I have no coding skills.)

[cyBerta]

Actually, I would expect that multiline group names are just rejected or all newlines are removed.

It would make sense to sanitize the strings in the core.