我有一个文件,其中包含以下文本
Lorem IpSuM is SIMPLY duMMy TeXt of the PrINtinG and typesetting industry.
Lorem Ipsum has been the industry's stanDaRd dummy text ever since the 1500s,
whEn an unknown printer took a galley of type and sCrAMBled it to MakE a type specimen BoOk.
在切换所有字符的大小写后,文本文件应如下所示:
lOREM iPsUm IS simply DUmmY tExT OF THE pRinTINg AND TYPESETTING INDUSTRY.
lOREM iPSUM HAS BEEN THE INDUSTRY'S STANdArD DUMMY TEXT EVER SINCE THE 1500S,
WHeN AN UNKNOWN PRINTER TOOK A GALLEY OF TYPE AND ScRambLED IT TO mAKe A TYPE SPECIMEN bOok.
我使用以下正则表达式模式:
%s/\<\([A-Z\s\]+\)\>/\L&/
但是vi编辑器抛出了一个错误:
E486: Pattern not found: \<\([A-Z\s\]+\)\>/\L&/
在vim中使用regex一次切换文件中所有字符的大小写的正确模式是什么?