The ability to put \1 in the right hand side of a substitution was done by jason@ at the Uni of Sydney, but after the Sam papers were published. It was a welcome feature that added special functionality to the 's' command within Sam. (Ed(1) had the feature, within its limited regexps, long before, of course.)
-rob On Fri, Oct 24, 2008 at 12:56 PM, Rudolf Sykora <[EMAIL PROTECTED]> wrote: > 2008/10/24 Charles Forsyth <[EMAIL PROTECTED]>: >>>If I try sth. like >>>/( b(.)b)/a/\1\2/ >>>on >>>bla blb 56 >>>I get >>>bla blb\1\2 56 >>>which is not quite what I want... How then? (I'd like to get 'bla blblblb >>>56') >> >> echo bla blb 56 | sed 's/( b(.)b)/&\1\2/' >> bla blb blbl 56 >> >> similarly use `s' not `a' in sam. > > > Yes. But my question was more subtle. I know it can be done with the > 's' command in sam now. But I asked sth. different. The documentation > (paper about sam) says 's' is redundant. But it seems (only seems > since documentation says nothing), that submatches only work with the > 's' command. If this is true 's' is not redundant, since if it weren't > there you would not have any chance to use \1, \2, etc. > That was the reason I wanted to have my example rewritten WITHOUT the > 's' command... > > But anyway thanks! > Ruda > >
