while (<>) {
   chomp;

   while (
      /
         (\w+)         # Name ($1)
         \s*           # Spaces (optional)
         =             # Equal sign
         \s*           # Spaces (optional)
         (
            '          # Quote
            [^']*      # Non-quotes
            '          # Quote
         |             # -or-
            [^'\s]+    # Non-spaces|quotes
         )
      /xg
   ) {
      my ($name, $expr) = ($1, $2);
      $expr = substr($expr, 1, -1)
         if substr($expr, 0, 1) eq "'";
      print("var: $name, expr: $expr\n");
   }
}

##</code><code>##

var: drsubc, expr: agauss(0,               <--- Doesn't work :(
var: delm1, expr: 0 + 0.045u*distm1
var: delm2, expr: 0 + 0.07u*distm2
var: delm3, expr: 0 + 0.07u*distm3
var: delm4, expr: 0 + 0.07u*distm4
var: delmt, expr: 0 + 0.07u*distmt
var: delml, expr: 0.16u + 0.43u*distml
var: delam, expr: 0.32u + 0.86u*distam
var: dele1, expr: 0 + 0.25u*diste1
var: dele2, expr: 0 + 0.25u*diste2
var: delma, expr: 0.16u + 0.6u*distma
var: pmsxt, expr: npmsxt + 12.5u*dpmsxt
var: tih, expr: 0.35u                      <--- Works :)
var: capct, expr: 0.50u + 0.13u*xdcapct
var: capcti, expr: 0.55u + 0.13u*xdcapct
var: m1t, expr: 0.41u + 0.05u*xdm1t
var: m1ti, expr: 0.36u + 0.05u*xdm1t
var: m2t, expr: 0.48u + 0.057u*dm2t
var: m3t, expr: 0.48u + 0.057u*dm3t
var: m4t, expr: 0.48u + 0.057u*dm4t
var: mtt, expr: 0.48u + 0.057u*dmtt
var: qtt, expr: 0.242u + 0.0202u*dqtt
var: htt, expr: 0.242u + 0.0202u*dhtt
var: mlt, expr: 2.0u + 0.2u*dmlt
var: amt, expr: 4.0u + 0.4u*damt
var: e1t, expr: 3.0u + 0.5u*de1t
var: e2t, expr: 4.0u + 0.5u*xde1mat
var: mat, expr: 4.0u + 0.4u*dmat
var: m1m2t, expr: 0.35u + 0.05u*dm1m2t