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