Answers:
在问之前应该看起来有点难,我找到了答案:
:help +cmd
*+cmd* *[+cmd]*
The [+cmd] argument can be used to position the cursor in the newly opened
file, or execute any other command:
+ Start at the last line.
+{num} Start at line {num}.
+/{pat} Start at first line containing {pat}.
+{command} Execute {command} after opening the new file.
{command} is any Ex command.