+ setup_gitattrs();
+}
+
+sub check_gitattrs ($$) {
+ my ($treeish, $what) = @_;
+
+ return if is_gitattrs_setup;
+
+ local $/="\0";
+ my @cmd = (@git, qw(ls-tree -lrz --), "${treeish}:");
+ debugcmd "|",@cmd;
+ my $gafl = new IO::File;
+ open $gafl, "-|", @cmd or die $!;
+ while (<$gafl>) {
+ chomp or die;
+ s/^\d+\s+\w+\s+\w+\s+(\d+)\t// or die;
+ next if $1 == 0;
+ next unless m{(?:^|/)\.gitattributes$};
+
+ # oh dear, found one
+ print STDERR <<END;
+dgit: warning: $what contains .gitattributes
+dgit: .gitattributes have not been defused. Recommended: dgit setup-new-tree.
+END
+ close $gafl;
+ return;
+ }
+ # tree contains no .gitattributes files
+ $?=0; $!=0; close $gafl or failedcmd @cmd;