refactor: keep meaning of a variable consistent

refactor: keep meaning of a variable consistent

We now use a new variable, "wrap", to track if a wrap should be
done, which is true either if "auto_wrap" is true or if the user
chooses to wrap in the dialog.

This preserves the meaning of the "auto_wrap" variable and also
removes the confusion of why the previous code of

  if (!auto_wrap) {
    ...
  }
  if (auto_wrap) {

did not use an "else" instead of the second "if".

No change in functionality.