Thien-Thi Nguyen <[EMAIL PROTECTED]> writes: > i just looked at image.c:1661 (lookup_image), which sez: > > /* If not found, create a new image and cache it. */ > if (img == NULL) > > probably immediately prior to this block is the best place to add > a file timestamp check. that's not as pretty a solution as fully > generalizing the check to some kind of `:volatile VOLATILE-SPEC': > > :volatile VOLATILE-SPEC > > If VOLATILE-SPEC is t, take extra steps to check for "image > change" so that image-cache lookup can DTRT [obviously this > documentation can be improved ;-]. If :file is specified, > use the timestamp of the file. Otherwise, compute a hash of > the data and use that to detect change. > > VOLATILE-SPEC may also be a function that takes one argument, > either the file timestamp or the data (as a string), and returns > non-nil to indicate that the image has changed. > > i was all fired up and ready to do some quick munging and post > code (thereby procrastinating on other emacs munging for vms :-), > but then i saw how image.c leaves file loading to each image type > (not enough abstraction for my tastes) so all the gumption seeped > away... > > perhaps post-release i (or someone else) will do the requisite > refactoring so that :volatile or like can be added more easily.
Sounds like a good idea. I can wait, my hack is working quite nicely for now. /Mathias _______________________________________________ Help-gnu-emacs mailing list Help-gnu-emacs@gnu.org http://lists.gnu.org/mailman/listinfo/help-gnu-emacs