a2ps perl.ssh handles s{}{} poorly

[JOHN MACDONALD, BLOOMBERG/ 731 LEXIN]

The perl.ssh sheet (version 4.13) looks wrong in the way it defines the 
"balanced bracketing" forms of the susbstitute/translate command.  When the
code looks like:  s{regexp}{replacement}
it displays as:   s{s}{replacement
The last line for each of the balanced delimiter forms of substitute in perl.ssh
looks like: 
    "s" Keyword_strong, "{" Plain, \1 Plain, "}" Plain),
but the "s" should be \1 (to insert either s or tr, depending upon which of the 
synonyms was actually used, and the rest should not be using \1 as the body but 
I have to confess that I don't see how the existing info in the .ssh file 
actually produces the right value for the replacement part, so I can't give an 
exact fix.  The .ssh file obviously does not try to ahndle the full range of 
possibilities (when the regexp portion of a substitue has balanced delimiters, 
the replacement can have different balanced [or even repeated] delimiters, so
that all of the following mean the same:
s{a}{b}
s{a}[b]
s{a}(b}
s{a}/b/
s{a}'b'
s{a}"b"
(The last two differ as to whether variables are interpolated within the 
replacement text.)