use this for cases: \r \R
filter-pass seems to want - in symbols -a -1/2 but not separately
use some other symbol instead
(filter-pass '(» « \. ! ) '(» s c h o e n e r w i t z \. « ! » u n b e d e u t e n d \. «))
(filter-pass '(» « \. _ ) '(» s c h o e n e r w i t z \. « _ » u n b e d e u t e n d \. «))
see extended symbols, try out what other symbols are saveable, editor complains if it finds wrong one, it appears in listener
Peter