Hello All, 

The following scripts works fine. But I have doubt in this.

$_="The quick black fox slavered over the dead dog   # a bit macabre, no?";

$_ =~ m/^                         # anchor at beginning of line
          The\ quick\ (\w+)\ fox    # fox adjective
          \ (\w+)\ over             # fox action verb
          \ the\ (\w+) dog          # dog adjective
          (?:                       # whitespace-trimmed comment:
            \s* \# \s*              #   whitespace and comment token
            (.*?)                   #   captured comment text; non-greedy!
            \s*                     #   any trailing whitespace
          )?                        # this is all optional
          $                         # end of line anchor
         /x;                        # allow whitespace
print;

I just modified the following line

 (?:                       # whitespace-trimmed comment:

                to
(?                       # whitespace-trimmed comment:

I got error. Why?

Regs,Durai.




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