[ruby-dev:26443] cvs [diff aborted]: cannot open file .cvsignore for comparing: No such file or directory

< ^ > P N |<>|^_>< --- | ~ ...Help

最近、cvs diff に -k option を付けると、エラーになる (ことがある) ので
すが、なんででしょう?

% cvs -f -d :pserver:anonymous / cvs.ruby-lang.org:/src co ruby
cvs checkout: Updating ruby
U ruby/.cvsignore
U ruby/.document
...
U ruby/x68/fconvert.c
U ruby/x68/select.c
% cd ruby 
% cvs -f diff -kk
cvs diff: Diffing .
cvs [diff aborted]: cannot open file .cvsignore for comparing: No such file or directory
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[田中 哲][たなか あきら][Tanaka Akira]