Re: names of cached images

[Jano Kula <jano.kula@gmail.com>]

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Hello again,

likely a bug and one question. Using this code with lmtx:

\starttext
\externalfigure[mill][width=40mm,cache=./first,conversion=gray.pdf] %
mill...
\externalfigure[mill][width=40mm,cache=.,conversion=gray.pdf]       %
m_k_i_v_mill...
\externalfigure[mill][width=40mm,cache=./second]                    % no
visible caching
\stoptext

*First two figures*
Chached image in the ./cache subdirectory has a lmtx name without prefix,
the cached image in the current directory has mkiv syntax with  m_k_i_v_
prefix.

*Third figure*
The images are cached to a specified directory, only when some conversion
is used. I'd like to cache images without any transformation. Is there any
conversion which doesn't alter the figure, just caches it? Is new
conversion type needed? Or is there other way to force caching without
conversion?

Thank you,
Jano


On Wed, Jun 9, 2021 at 3:23 PM Jano Kula <jano.kula@gmail.com> wrote:

> Hello Hans,
>
> On Sun, Jun 6, 2021 at 4:56 PM Hans Hagen <j.hagen@xs4all.nl> wrote:
>
>> On 6/6/2021 1:16 PM, Jano Kula wrote:
>> > Hello list,
>> >
>> > usingconversion=gray.pdf in lmtx the cached images' names have some
>> > string in their name. I thought it's a name of random sequence of
>> luatex
>> > cache, but the string is the same on other machines and I don't know,
>> > where it comes from. mkiv used to have m_k_i_v_ string there.
>> >
>> > hacker.pdf = source image
>> > hacker_jpg_c60ccda70ef92e32d7a6334f31c23259.gray.pdf = cached linux
>> > hacker_jpg_c60ccda70ef92e32d7a6334f31c23259.gray.pdf = cached win
>> >
>> > MWE
>> > \starttext
>> > \externalfigure[hacker]
>> >      [cache=./,
>> >      conversion=gray.pdf]
>> > \stoptext
>> >
>> > Is it intended behavior?
>> sure, something like that is always intended; it's an md5 of a hash of
>> all relevant parameters so that when you change one (say the resolution)
>> we now that we need to update
>>
>
> Thank you, wiki updated.
> J.
>

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