Mathias Dahl <[EMAIL PROTECTED]> writes: > I probably can change the code to work the way > `insert-image-file' does, but I would rather like to, in some > way, be able to flush one particular image from the image cache. > > Can this be done or do I need to write a more advanced piece of code?
yes. ;-) > For now I will use `clear-image-cache' although it feels "ugly". 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. thi _______________________________________________ Help-gnu-emacs mailing list Help-gnu-emacs@gnu.org http://lists.gnu.org/mailman/listinfo/help-gnu-emacs