Question

Im reading great tpope rails.vim and what does it mean:

" }}}1
" Abbreviations {{{1

exactly here: https://github.com/tpope/vim-rails/blob/master/autoload/rails.vim#L3921

Is it for better navigation?
This file is quite huge, how to navigate on it properly – using ctags?

Answer 1

These are so called foldmarkers. Vim 6 introduced code folding and the triple braces are the default string to mark the beginning and the end of a fold. In addition, if you prepend the opening mark {{{ with text, it’ll show in the collapsed line as a header. This is only one way to fold code. Being a manual method, it is easily controlled and thus preferred by many.

See :h folding and :h fold-marker.