Avoid relying on compiled modules too much. Even if it is Free,
compiled code makes packages more expensive to audit, build,
distribute and verify. public-inbox itself will only be implemented
-in scripting languages (currently Perl 5) and optional JIT-compiled C
-(via Inline::C)
+in scripting languages (currently Perl 5) and optional
+Just-Ahead-of-Time-compiled C (via Inline::C)
Do not recurse on user-supplied data. Neither Perl or C handle
deep recursion gracefully. See lib/PublicInbox/SearchThread.pm