143       PosPtr SepEnd = consumeAllSeparators(Start, End);  in increment()  local
144       if (SepEnd != End) {  in increment()
145         PosPtr TkEnd = consumeName(SepEnd, End);  in increment()
147           return makeState(PS_InFilenames, SepEnd, TkEnd);  in increment()
149       return makeState(PS_InTrailingSep, Start, SepEnd);  in increment()
169       if (PosPtr SepEnd = consumeAllSeparators(RStart, REnd)) {  in decrement()  local
170         if (SepEnd == REnd)  in decrement()
172         PosPtr TkStart = consumeRootName(SepEnd, REnd);  in decrement()
175         return makeState(PS_InTrailingSep, SepEnd + 1, RStart + 1);  in decrement()
188       PosPtr SepEnd = consumeAllSeparators(RStart, REnd);  in decrement()  local
189       if (SepEnd == REnd)  in decrement()
191       PosPtr TkStart = consumeRootName(SepEnd ? SepEnd : RStart, REnd);  in decrement()
193         if (SepEnd)  in decrement()
194           return makeState(PS_InRootDir, SepEnd + 1, RStart + 1);  in decrement()
197       TkStart = consumeName(SepEnd, REnd);  in decrement()
198       return makeState(PS_InFilenames, TkStart + 1, SepEnd + 1);  in decrement()