IOhannes--
Please check your grep invocation. There are many hits of "rance" in the source, including all these words:
occurance (which is actually a spelling mistake!), appearance, France, entrance, tolerance.
Here's something which works, and also filters out the bogus hits.
Note also the typo ("rance" should be "range") has been there a long time, as it is also in Pd-0.43.4 ("extended")
$ find pd-extended/ pd-0.46-7/ -type f -print0 | xargs -0 grep rance | egrep -v "(occu|ppea|F|ent|tole)rance"
pd-extended/extra/vanilla/adc~_dac~-help.pd:more channels \, and channel numbers out of rance will be dropped (dac~)
pd-0.46-7/doc/5.reference/adc~_dac~-help.pd:more channels \, and channel numbers out of rance will be dropped (dac~)
thanks,
BH