CVS header keywords not replaced

I have a unique problem with few of my files where the header information (Author/RCSFile/Date etc) is not automatically replaced when I commit my changes using Eclipse.

It comes back to blank:

######################## COPYRIGHT ################################
#
#       $RCSfile$
#          Owner: My Company
#      $Revision$
#   开发者_如何学编程       $Date$
#
#   Last $Author$
#
#    Description: Some description
#
####################################################################

Any idea why it would so? Out of 500 files I have only issue for 6 files.

Keyword substitution is configurable for each file (so that binaries aren't corrupted when you check them out). Do a cvs log -h on the offending files and check the "keyword substitution" line. The default is

keyword substitution: kv

Compare against other files that don't have this problem.

If that's not it, could there be non-printable characters in the file? Try cat -A filename if your system supports it, or cat -v filename if it doesn't (pipe the output to head or your favorite pager).

EDIT: Looks like the keyword substitution line was the problem. Use cvs admin to fix it. (I though it would be better to have this information in the answer rather than just in the comment.)