Release Notes: A security issue in "make dist", reported as CVE-2009-4029, was resolved. The new "-g"/"--gnu" command-line option now overrides "-G"/"--traditional", in preparation for not supporting GNU extensions and behaving POSIXly correct without it. The "-L"/"--nesting-limit" command-line option now defaults to 0 for unlimited on platforms that can detect and deal with stack overflow. The "--debugfile" command line option now defaults to stderr. The input engine was optimized for faster processing. Several performance improvements were made. Several portability issues and regressions were resolved.
Release Notes: maketemp now creates an empty file with the given name, instead of merely returning the name of a nonexistent file. This closes a security hole.