[Gimp-developer] Parasites and Tattoos: some questions

[David Gowers]

There is a flag for making a parasite undoable (GIMP_PARASITE_UNDOABLE?)
Are you saying that this flag doesn't work? It does for me in PyGimp -- I
use it most of the time.

On 8/24/06, saulgoode at brickfilms.com <saulgoode at brickfilms.com> wrote:
>
> Parasites:
>
> Is there a philosophical reason that parasite changes are not
> UNDOable? If not, could someone provide a nudge on how "non-tile"
> information is saved to the UNDO history (for example, layer name
> changes)?
>
> Also, the "*-parasite-find" PDB functions return a list containing a
> single list: for example,
>
> (("gimp-comment" 1 #18"4372656174656420776974682047494d5000"))


This looks like a Script-fu bug. PyGimp doesn't do this, it just returns the
parasite itself.


Tattoos:
>
> If an object has a specific tattoo assigned to it then, when the
> object is destroyed, is the tattoo value made available for re-use?
> For example, I have three layers and record their tattoos. I then
> merge those layers which generates a new layer (with a new tattoo).
> Can I rely on the tattoos of the original layers not being assigned to
> a new object (during that image editing session)? (If so, I would like
> to assign the original tattoo to the merged layer.)


I did some tests on this awhile ago, and IIRC they don't get  reused until a
very long time (about 2^31 iterations of creating new
layers/vectors/channels). Much the same as IDs in that respect.
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