CVS marks conflicts with in-line “conflict
markers”, and prints a
C during an
update. Historically, this has caused problems, because CVS
isn't doing enough. Many users forget about (or don't see) the
C after it whizzes by on their terminal.
They often forget that the conflict-markers are even present,
and then accidentally commit files containing
Subversion solves this problem by making conflicts more
tangible. It remembers that a file is in a state of conflict,
and won't allow you to commit your changes until you run
the section called “Resolve Conflicts (Merging Others' Changes)” for more details.