Re: [PATCH 2/4] add -u: get rid of "treewideupdate" configuration

Nguyen Thai Ngoc Duy [off-list ref] writes:

I need someone to enlighten me again. Why do we need ":" for "no
pathspec" when we can simply specify no pathspec for the same effect?

Futureproofing.  Currently "log" family defaults to "tree-wide" when there
is no pathspec, but imagine what happens when a command like "log" that
knows how to simplify history defaults to "current directory".  You cannot
override it by "git that-cmd :/", which would give it a single tree-wide
pathspec, not "no pathspec".  It will still cull empty commits.