Convert WAV to FLAC while preserving tags

Is there a command utility that can convert between various audio formats (or more specifically from wav to flac) while preserving tags? Or an utility that can copy tags from one audio file to another? There are various tags, not just track name and artist. There are also custom tags (i.e. tags with custom names not commonly found in tag databases). Tags are generated by different tools and every tool saves tags in different formats. Some tools just make a "LIST" chunk with type "INFO". Other tools also make an "ID3 " or "id3 " chunk with ID3v2 tags inside. Other tools just stick ID3v2 tags to the end of the file without even making a RIFF chunk.