Sprogs, if he were using release version, yes, that would be true.
He mentions blue text which I presume is the dark blue, that may mean he's using SVN, and the log echo (and many other) server.ini settings aren't yet rewritten for the current SVN.
For SVN, Other than modifying code for every command directly, which would also prevent echoing to the file logs, there is no current way.
If release, Sprogs answer would work.