ciaranm/securemodelines — pull request #5 by miorimmax (2011-10-16 20:58:13+00:00)
Title: Make white space between : and keyword set optional

According to the vim documentation (:help modeline), the white space
between ':' and the keyword 'set' is optional:

[text]{white}{vi:|vim:|ex:}[white]{options}

[text]	any text or empty
{white}	at least one blank character ( or )
{vi:|vim:|ex:}	the string "vi:", "vim:" or "ex:"
[white]	optional white space
{options}	a list of option settings, separated with white space or ':',
where each part between ':' is the argument for a ":set"
command (can be empty)

Thus, the regular expression has been changed to match zero or more
white spaces, rather than one or more.