Avoid global vars by passing opt args to kwrepo.file "Normal" reading of filelog just expands keywords in given data. Reading filelog for overwrite on commit, kwshrink, kwexpand triggers kwtemplater.process, which returns read data (expanding in case of commit, kwexpand; not expanding for kwshrink) and a count of keywords. If kwcnt is positive file will be overwritten.

Implement kwshrink/kwexpand commands to deal with config, import issues

Set ui to repo.ui at once where needed for backwards compatibility