Add colorcolumn

.editorconfig

@@ -38,7 +38,7 @@ continuation_indent = 4
 
 # this mean utf8 length , if this is 'unset' then the line width is no longer checked
 # this option decides when to chopdown the code
-max_line_length = 120
+max_line_length = 80
 
 # optional crlf/lf/cr/auto, if it is 'auto', in windows it is crlf other platforms are lf
 # in neovim the value 'auto' is not a valid option, please use 'unset' 

lua/core/options.lua

@@ -84,3 +84,5 @@ vim.opt.diffopt:append({ "indent-heuristic", "algorithm:histogram", })
 vim.fn.execute("filetype plugin on")
 vim.opt.hlsearch = false
 vim.opt.laststatus = 3
+vim.opt.textwidth = 80
+vim.opt.colorcolumn = '+1'