While the global codepage for the document is cp1252 there are local definitions:
- The \xf4 char is written with font f4:
{\f4...\'f4
. - But the definition for font f4 is:
{\f4\fswiss\fcharset204 Arial;}
- \fcharset204 sets the charset for this font to 204, e.g. Russian, which is codepage 1251 (according to http://msdn.microsoft.com/en-us/library/cc194829.aspx)
And with codepage 1251 you get the expected character ф.
BTW, codepage 1252 is similar to latin-1 and does not have a character ф at all (see http://en.wikipedia.org/wiki/Windows-1252)