[NTG-context] What is the luatex version of \pdfescapehex

Hi, I've written a very old module which used a lot of pdf primitives like \pdfescapehex and \pdfescapename etc. and it turns out not they don't work in mkiv. So I just want to know are there any alternatives? TIA -- Best Regards Chen ---------------------------------------------------------------- Zhi-chu Chen | Shanghai Synchrotron Radiation Facility No. 2019 | Jialuo Rd. | Jiading | Shanghai | P.R. China tel: 086 21 5955 3405 | zhichu.chen.googlepages.com | www.sinap.ac.cn ----------------------------------------------------------------