Darcs annotate command might not send a .gz suffix in hashes.
MOPDXS3YAUMRNYZ6VBHRA3P65UDXT6VV5VWGDK5YWTMTUCVNW5DQC
CJQZS55XMIRTZLR36D3LWIBGXW7AV4AX5ANSB44RHXADDMAEMFVQC
MAGPFPZBNCBIGVYPCCP25YIAT654YY4ZRN5TIPHLCPN2X3VIWCEQC
(while (looking-at "^\\([-0-9a-f]+\\)\\.gz | \\(.*\\)$")
(while (looking-at "^\\([-0-9a-f]+\\)\\(?:\\.gz\\)? | \\(.*\\)$")