version=4
opts="dversionmangle=s/\+dfsg\d*$//, \
  uversionmangle=s/([ab])/~$1/;s/(?:(rc))/~$1/, \
  oversionmangle=s/$/+dfsg/" \
  http://sf.net/tcl/tcl(?:-core)?(9\.1(?:[ab]|\.)\d+(?:rc\d+)?)-src\.tar\.gz
