that it was told to add everthing ('a') when up-arrow was pressed by
mistake.
+ * Setting a git command that uses custom configuration via "-c var=val"
+ as an alias caused a crash due to a realloc(3) failure.
+
* "git diff -C -C" used to disable the rename detection entirely when
there are too many copy candidate paths in the tree; now it falls
back to "-C" when doing so would keep the copy candidate paths