The current version will be renamed as bison-1.22 and a symbolic link bison.old will point to it. Two parse files, bison.simple and bison.hairy, under /exp/rcf/common/lib will also attatch -1.22 as well. Man pages and info files will be updated.
The program will be copied to another exp tree server overtonight. Before then, some machines will still getting the old version.
what is bison?
GNU Project parser generator (yacc replacement)