Alpar had the key, focus can be set in the window class. But it is not enough, the focused widget has to be activated, as well! Was a hard task to find out... By the way, two compilation warnings are removed.
1 AC_DEFUN([LX_DOCDIR_SUFFIX],
3 AC_ARG_WITH([docsuffix],
4 AS_HELP_STRING([--with-docsuffix=DOCSUFFIX], [install the documentation under datadir/doc/DOCSUFFIX]),
5 [], [with_docsuffix=no])
7 AC_MSG_CHECKING([for the value of DOCSUFFIX])
8 if test x"$with_docsuffix" != x"no"; then
9 DOCSUFFIX="$with_docsuffix"
11 DOCSUFFIX="$PACKAGE_TARNAME-$PACKAGE_VERSION"
13 AC_MSG_RESULT([$DOCSUFFIX])