IniWriteSection does not sufficiently control the "data" parameter.

[helloyou_tos_jg@…]

For this code :

IniWriteSection (@ScriptDir & "\myIni.ini", "MySection", "MyKey1=MyValues2" & @LF & "MyKey2")

the return should be 0 and @error = 1 because the data format is invalid.

For this code :

IniWriteSection ($ini, "MySection", "MyKey1=MyValue1" & @LF & "MyKey1=MyValue2")

the MyKey1 should not be written two times.

[Matt Diesel]

No issue here in the example, as an ini file will still work when multiple keys have the same name (the first defined value will be returned by IniRead, so MyValue1). If you want unique keys then this is up to the programmer to implement.

However, absolutely no checking is done on the string format at all, so completely invalid strings can still be written. That is more of an issue.

I still believe it is up to programmer to make sure the data they are writing is correct though.

[helloyou_tos_jg@…]

Thank for this fast answer.
It's not a problem to check to format (for me).
Maybe you can add a remark in the helpfile about this.
Good luck