BUG: md5sum 5.97

[Sam Liddicott]

Try running md5sum 5.97 on a file with \ in it's name; and the output is
prefixed with a \

e.g.

$ echo hello > file\\name
$ md5sum file\\name
\b1946ac92492d2347c6235b4d2611184  file\\name
$ md5sum < file\\name
b1946ac92492d2347c6235b4d2611184  -

Sam