How to find <foo> but not <<foo>> in following text:

---------<foo>--------

---------<<foo>>------

I try /\(<<\)\@!\zsfoo,it does't work correctly. thanks

CodePudding user response：

You can use

:g/\(<\)\@<!<foo>\(>\)\@!

Or, since < and > are single char strings, you may even discard the grouping parentheses:

:g/<\@<!<foo>>\@!

Details

• \(<\)\@<! / <\@<! - a location not immediately preceded with < char
• <foo> - a <foo> string
• \(>\)\@! / >\@! - immediately to the right, there must be no > char.