First of all: revision 1981 is mine, what is important me because I was born in 1981. But what is new in my revision? If you drag nodes with left button, edge-breakpoints do not change location. If you drag nodes by right button, they do, they take up their base situation at the halfpoint of the edge.
1 AC_DEFUN([LX_ENABLE_GUI],
4 AS_HELP_STRING([--enable-gui], [build the GUI])
5 AS_HELP_STRING([--disable-gui], [do not build the GUI @<:@default@:>@]),
8 AC_MSG_CHECKING([whether to build the GUI])
9 if test x"$enable_gui" != x"no"; then
14 if test x"$enable_gui" != x"no"; then
15 PKG_CHECK_MODULES([GTK], [libgnomecanvasmm-2.6 >= 2.6.0])
17 AM_CONDITIONAL([WANT_GUI], [test x"$enable_gui" != x"no"])