在vim中匹配日期格式Y-m-d H:i:s或Y/m/d H:i:s
\d\{4\}[-\/]\d\{1,2\}[-\/]\d\{1,2\} \d\{1,2\}:\d\{1,2}:\d\{1,2}
包括一个或多个空格
/\d\{4\}[-\/]\d\{1,2\}[-\/]\d\{1,2\}\s\+\d\{1,2\}\d\{1,2\}:\d\{1,2\}:\d\{1,2\}
/\d\{4\}[-\/]\d\{1,2\}[-\/]\d\{1,2\} \+\d\{1,2\}:\d\{1,2}:\d\{1,2}
