1 diff -aruN a/bin/automake.in b/bin/automake.in
2 --- a/bin/automake.in 2013-11-02 17:48:13.000000000 -0700
3 +++ b/bin/automake.in 2018-09-14 10:21:04.000000000 -0700
5 sub substitute_ac_subst_variables
8 - $text =~ s/\${([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;
9 + $text =~ s/\$[{]([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;