+ printdebug "considering saving $f: ";
+
+ if (link $f, $upper_f) {
+ printdebug "linked.\n";
+ } elsif ((printdebug "($!) "),
+ $! != EEXIST) {
+ fail "saving ../$f: $!";
+ } elsif (!$refetched) {
+ printdebug "no need.\n";
+ } elsif (link $f, "$upper_f,fetch") {
+ printdebug "linked (using ...,fetch).\n";
+ } elsif ((printdebug "($!) "),
+ $! != EEXIST) {
+ fail "saving ../$f,fetch: $!";
+ } else {
+ printdebug "cannot.\n";
+ }