:g//norm! @aIt's used to apply the macro "a" to all results of the last search.
:g -> global command
// -> last search
norm! -> execute a command in default NORMAL mode(! for force)
@a -> apply the macro
ST std::aelloc @aellocate · 98 subscribers std::aelloc https://www.vimfromscratch.com/articles/vim-macros
:g//norm! @a