Description of problem:

If you create a syntax error near the end of /etc/sudoers then visudo will say:

>>> sudoers file: syntax error, line 95 <<<

If you choose to edit the file it conveniently moves you to the specified line.
 Unfortunately the line number is wrong.

Version-Release number of selected component (if applicable):

sudo-1.6.9p4-3.fc8

How reproducible:
Always

Steps to Reproduce:
1. visudo
2. add a new line at the end, containing a syntax error
3. save and quit
4. choose to re-edit the file
  
Actual results:

Cursor is automatically placed on the wrong line.

Expected results:

Cursor should be on the line containing the syntax error.

Additional info:

This is caused by the following lines:

Defaults    env_keep = "COLORS DISPLAY HOSTNAME HISTSIZE INPUTRC KDEDIR \
                        LS_COLORS MAIL PS1 PS2 QTDIR USERNAME \
                        LANG LC_ADDRESS LC_CTYPE LC_COLLATE LC_IDENTIFICATION \
                        LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC \
                        LC_PAPER LC_TELEPHONE LC_TIME LC_ALL LANGUAGE LINGUAS \
                        _XKB_CHARSET XAUTHORITY"

The escaped newlines confuse the line counter so that any syntax error after
env_keep will report the wrong line number.