From Bugzilla Helper:
User-Agent: Mozilla/4.76 [en] (X11; U; Linux 2.2.14-5.0smp i686)


lesspipe.sh tries to open logfiles as man pages (their names are of the
form *.gz.n), and hence fails.

Reproducible: Always
Steps to Reproduce:
1. less /var/log/messages.1.gz (with appropriate setting of LESSOPEN)

Actual Results:  I got the "may be binary" prompt

The fix is to add an else clause to the *.?.gz and *.?.bz2 clauses of
lesspipe.sh:

else
  gunzip [or bunzip2] -c "$1"

(unless perhaps this causes problems with some other files I haven't
thought of...)