Getting in the habit of making clean changesets is important. Don’t futz around with other people’s whitespace—it messes up the clarity of your changeset.
And: start your check-in comment with the Issue Number, from the bug-tracking system you use. “MAXOUTAPP-44 #44 Took out the opplomizer. Never worked.” See how I used two different notations for denoting the bug number, Jira and Trac. Could be useful sometime. If there’s software outside of Trac that creates links between an issue string and a web page for it.