Duplicate filter 1.4 Jean-Christian Denis, Pierre Van Glabeke Antispam for duplicate comments on multiblog https://git.dotclear.watch/JcDenis/dcFilterDuplicate/releases/download/v1.4/plugin-dcFilterDuplicate.zip 2.28 https://git.dotclear.watch/JcDenis/dcFilterDuplicate/src/branch/master/README.md https://git.dotclear.watch/JcDenis/dcFilterDuplicate/issues