in the new Intellij 9.0 you can add own dictionary files for the build-in spell checker. Bundled are two of them - an english one and one with special terms called jetbrains.
I like to add a german *.dic file. So I started downloading the igerman98 sources  and tried the generated *.dic files for ispell/hunspell. But no such file seems to work. Than I downloaded the old german dictionary  from the old spell checker plugin. In the JAR, I found a german.0 file. I renamed it into german.dic and added it to Intellij 9.0. It works. But than I noticed, that all words with german umlauts and ß won't recordnized.
The difference between the german.0 file inside the old german plugin dictionary is simply a list of newline separated words, where the ispell/hunspell *.dic files contain also some control information for conjugation and case. I suppose that the spell checker in Intellij 9.0 doesn't support this.
So is there a way to convert ispell/hunspell *.dic files in the more simple format suported by Intellij 9.0?