> On 12 Jun 2019, at 20:21, Aurélien Pierre <rese...@aurelienpierre.com> wrote:
> 
> Hi,
> 
> I'm the author of the lighttable's compress history button. White balance and 
> highlight reconstruction         should never be turned off, so what would be 
> the purpose of having them disabled in the first place ?
> 

Yet they can be disabled, some other modules can’t.

> Then, we can discuss what the history compression should do/avoid/prevent. 
> 

History compression shouldn’t modify the image.

> Aurélien.
> 
>> Le 12/06/2019 à 11:40, dt-l...@stefan-klinger.de a écrit :
>> thokster (2019-Jun-11, excerpt):
>>> Hi,
>>> 
>>> Am 11.06.19 um 15:32 schrieb dt-l...@stefan-klinger.de:
>>> 
>>>> This option is not about saving disk space, but rather about cleaning
>>>> up.
>>> Is the "compress history" button in lighttable view doing anything else?
>> Woha.  I have been talking about "compress history" in darkroom, not
>> lighttable.
>> 
>> They seem not to use the same code internally.
>> 
>> I have to admit that I have not thought about the "compress history"
>> button in lighttable.  That one already seems to remove switched-off
>> modules in current master [1].  And it seems to do this incorrectly
>> wrt. parafin's email:
>> 
>>     * In darkroom, disable "white balance" and/or "highlight
>>       reconstruction".
>> 
>>     * Go to lighttable, select that image, and apply "history stack →
>>       compress history"
>> 
>>     * When you open the image again, "white balance" and "highlight
>>       reconstruction" will be enabled again.
>> 
>> So if compressing should not change the image, then my current
>> implementation [2] is even more correct, although it only is
>> applicable from darkroom, not lighttable.
>> 
>> Cheers
>> Stefan
>> 
>> ____________________
>> [1] 2.7.0+1443~g9bfbb225e
>> [2] 
>> https://github.com/darktable-org/darktable/compare/master...s5k6:compressHistory
>> 
>> 
>> --
>> http://stefan-klinger.de                                        o/X
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