[Development] Requesting a break in behavior in QML Text element

[Bo Thorsen]

Den 30-01-2015 kl. 08:51 skrev Mathias Hasselmann:
>
>
> Am 30.01.2015 um 08:12 schrieb Bo Thorsen:
>> Den 29-01-2015 kl. 23:24 skrev Robin Burchell:
>>> Hi,
>>>
>>> Rationale: Text.AutoFormat is a terrible misfeature in almost every
>>> case out there.
>>> [...]
>>
>> I agree that it would be better to set plain text as the default. In
>> most cases it's what there is in the Text elements anyway. This is at
>> least the case for most applications I have come across.
>>
>> But we can't do this before 6.0. It's a clear API change that will
>> affect every single QML application with rich text in Text elements,
>> where they don't explicitly set the format. And why would anyone set it
>> if they accept rich text? AutoFormat is superior to plain text in that
>> it can accept plain text as well.
>>
>> We would not accept such a change for QWidget based classes, so we can't
>> accept it for QML elements either.
>
> Sorry, but that's nonsense.
>
> With QML we can as we have versioned import statements. They are made 
> exactly for cases like this, incompatible API changes: If the proposed 
> change only gets implemented for "import QtQuick 2.5" all existing 
> applications will keep running as they'll import QtQuick 2.4 at maximum.

You are right that this is a possibility. But it's not without cost to 
do this. It adds complexity for Qt developers to keep multiple versions 
alive and weird bugs for our users.

You say it's easy for developers to upgrade to a new version and then so 
a quick search and replace. This is only correct if you assume that 
developers know they have to do this. I really don't like forcing people 
to have to go through a list of things that must be done when upgrading 
from one minor QML version to another. IMHO that's an abuse of the concept.

If this was a big problem that should be fixed, sure. But I tried to 
argue why it's not as big a problem as the OP said. I completely 
disagree that having the versioning gives the right to change all kinds 
of details.

Bo.

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