my ls function was working, and printed out one file per line with color information.
I don't what causes it stop working.
the strange thing is
adexl didn't complain it for a long time, with many cadence versions i have used.
then for the current cadence version, it didn't complain either for many months, then it started complain couple days ago.
then i tried a even newer version of cadence (ic615_isr15), no complain either.
btw, after I rename the ls to something else and restart cadecne with current version (isr12), adexl runs now.
but I'd like to know where the problem is, so I can keep using my colored ls function.