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-rw-r--r--Master/tlpkg/TeXLive/TLCrypto.pm10
1 files changed, 7 insertions, 3 deletions
diff --git a/Master/tlpkg/TeXLive/TLCrypto.pm b/Master/tlpkg/TeXLive/TLCrypto.pm
index 29e7a2c5a41..3f23eab3001 100644
--- a/Master/tlpkg/TeXLive/TLCrypto.pm
+++ b/Master/tlpkg/TeXLive/TLCrypto.pm
@@ -61,9 +61,13 @@ BEGIN {
=item C<< setup_checksum_method() >>
-Tries to find a checksum method: First check for usability of C<<Digest::SHA>>,
-then for either the C<openssl> or the C<sha512sum> programs.
-Returns the checksum method or undef if none found.
+Tries to find a checksum method: check usability of C<Digest::SHA>,
+then the programs C<openssl>, C<sha512sum>, and C<shasum>, in that
+order. On old-enough Macs, C<openssl> is present but does not have
+the option C<-sha512>, while the separate program C<shasum> does suffice.
+
+Returns the checksum method as a string, and also sets
+C<<$::checksum_method>>, or false if none found.
=cut