スペースが連続で含まれるとき、スペースは1文字にする

[takanotume24]

No description provided.

[takanotume24]

RFCの文章をコピーした時に、先頭にスペースがあるのでこれが発現する

   Software implementations are typically required to test names of
   object members for equality.  Implementations that transform the
   textual representation into sequences of Unicode code units and then
   perform the comparison numerically, code unit by code unit, are
   interoperable in the sense that implementations will agree in all
   cases on equality or inequality of two strings.  For example,
   implementations that compare strings with escaped characters
   unconverted may incorrectly find that "a\\b" and "a\u005Cb" are not
   equal.