Enable CTL for Default?

[Norbert Thiebaud]

On Tue, Jun 19, 2012 at 1:12 PM, Christian Lohmaier
<lohmaier+libreoffice at googlemail.com> wrote:
> Hi Norbert,  *,
>
> On Tue, Jun 19, 2012 at 7:52 PM, Norbert Thiebaud <nthiebaud at gmail.com> wrote:
>> On Tue, Jun 19, 2012 at 8:41 AM, Christian Lohmaier
>> <lohmaier+libreoffice at googlemail.com> wrote:
>> [..]
>>> * visible cursor travelling, input sequence checking and detection of
>>> writing mode that are only active for CTL might have a tiny
>>> performance impact
>>
>> Either it _has_ a tiny performance impact
>> or it _might_ have a performance impact
>> But qualifying a performance impact, that has not been measured, as
>> 'tiny' up-front, is 'begging the question'.
>
> Well, I have a fairly slow machine, and I have enable Asian language
> support enabled and don't notice any difference compared to not having
> it enabled. But I don't work with huge documents.
> Also I frequently did enable CTL support when I was doing more QA work
> (processing issues) and didn't note any performance drawbacks either,
> but then again I only used it to check/verify bugs, not to actually
> create documents that are RTL or whatnot.
>
> I only use the textgrid and vertical writing myself.
>
>> (note: it is quite possible that the impact, if any, is
>> tiny/negligible... I'm just objecting to the biased wording of the
>> statement of 'fact')
>
> Well, free free to provide some numbers, or even a way to measure it.
> If stuff is done in addition, that needs more CPU. That is my
> rationale. I myself didn't notice any penalty that would make me not
> activate the option because of performance issues, but I'm no heavy
> user myself.
>

Fair enough.

>>> * will work out-of the box for all users
>> No regression for any document that does not rely on these features today ?
>> (note: This is not a rhetorical question. I honestly do not know if
>> these options only impact the UI or if they also can impact the way a
>> document is rendered)
>
> Well - I always was under the assumption that the option would only
> affect the UI, but Eike corrected me on that point and mentioned the
> additional input sequence checking and writing mode detection & cursor
> traveling stuff that is only used with the option enabled.
>
> If there is a change in rendering of the document based on whether the
> option is enabled or not, then it is a bug.

I agree it would be... I'm concerned that they would all become very
visible at once...

Norbert