Hi, with Fedora 28's RPM 4.14.2.1, I was looking at http://rpm.org/user_doc/lua.html to mangle some strings. It took some experimentation to find that the actually working syntax is: | [tim@passepartout ~]$ rpm --eval '%{lua: local re = rex.newPOSIX("abc"); if re:match("abcdef") then print("Matched") else print("Not matched"); end}' | Matched | [tim@passepartout ~]$ rpm --eval '%{lua: local re = rex.newPOSIX("abc"); if re:match("acdef") then print("Matched") else print("Not matched"); end}' | Not matched | [tim@passepartout ~]$ However, taking http://math2.org/luasearch/rex.html as ref- erence, there does not seem to be a way to access more use- ful functions like rex.sub(), nor do PCRE regular expres- sions seem to be available ("attempt to call a nil value (field 'newPCRE')"). Even more confusing, Lua's internal string module seems to provide most of what is needed (with a slightly different syntax): | [tim@passepartout ~]$ rpm --eval '%{lua: print(string.match("abcdef", "abc"));}' | abc | [tim@passepartout ~]$ So what is the status of and advantage to use the rex exten- sion over the internal string module? In Fedora's spec files, rex does not seem to be used once, but string quite a bit. Tim _______________________________________________ Rpm-list mailing list Rpm-list@xxxxxxxxxxxxx http://lists.rpm.org/mailman/listinfo/rpm-list
