From rick@consumercontact.com

Rick

*** pod/perlop.pod.old Tue Jan 18 17​:29​:27 2000
--- pod/perlop.pod Tue Jan 18 17​:32​:09 2000
***************
*** 167,177 ****
  of operation work on some other string. The right argument is a search
  pattern, substitution, or transliteration. The left argument is what is
  supposed to be searched, substituted, or transliterated instead of the default
! $_. The return value indicates the success of the operation. (If the
  right argument is an expression rather than a search pattern,
  substitution, or transliteration, it is interpreted as a search pattern at run
! time. This can be is less efficient than an explicit search, because the
! pattern must be compiled every time the expression is evaluated.
 
  Binary "!" is just like "=" except the return value is negated in
  the logical sense.
--- 167,176 ----
  of operation work on some other string. The right argument is a search
  pattern, substitution, or transliteration. The left argument is what is
  supposed to be searched, substituted, or transliterated instead of the default
! $_. The return value indicates the success of the operation. If the
  right argument is an expression rather than a search pattern,
  substitution, or transliteration, it is interpreted as a search pattern at run
! time.
 
  Binary "!" is just like "=" except the return value is negated in
  the logical sense.