commands.
When diffcore-pickaxe is in use, it checks if there are
-filepairs whose "result" side has the specified string and
-whose "origin" side does not. Such a filepair represents "the
-string appeared in this changeset". It also checks for the
+filepairs whose "result" side and whose "origin" side have
+different number of specified string. Such a filepair represents
+"the string appeared in this changeset". It also checks for the
opposite case that loses the specified string.
When `\--pickaxe-all` is not in effect, diffcore-pickaxe leaves