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 2013-04-15  Bernd Warken  <groff-bernd.warken-72@web.de>
 
+	* m4/groff.m4: Replace tabs by spaces.  Use a double line between
+	AC_DEFUNs.
+
+2013-04-15  Bernd Warken  <groff-bernd.warken-72@web.de>
+
 	In the whole `groff' system, rename autoconf variable `$PERLPATH'
 	to `$PERL', which has the same content.  But `$PERL' suits to
 	`AX_PROG_PERL_VERSION' in m4 macro `GROFF_PERL' in `m4/groff.m4'.