A glance at the regular expressions of VIM __ Regular expressions

VIM handles strings with a look around to facilitate complex deletion and replacement operations

For an explanation of the look, please refer to Yurii's "proficient in regular expression" book.

If you have the following string:

Smallcat

Smalldog

Mysmallcat

Smallcat_lili

\@= Order
Eg: find the characters behind the cat small
/small\ (cat\) \@=

\@! Order negative Look around
Eg: find characters that are not followed by cat small
Small\ (cat\) \@.

\@<= Reverse
Eg: Look up the cat in front of the small
\ (small\) \@<=cat

\@<! Reverse negation
Eg: Find Cat in front that is not small

\ (small\) \@<. Cat

\@> Curing Group

\% (atom\) non-capture bracket

This means that this grouping is not captured and does not record the expression within this bracket:

%s/\% (cat\) _\ (lili\)/\1/gc

Reference documentation

http://blog.csdn.net/lxcnn/article/details/4304754http://blog.csdn.net/lxcnn/article/details/4304754