ref(nvim): made everything a tiny module

.config/nvim/fnl/opts.fnl

@@ -1,44 +0,0 @@
-(import-macros {: set!} :hibiscus.vim)
-
-(let [opts {;; search
-            :hlsearch false
-            :incsearch true
-            :ignorecase true
-            :smartcase true
-            ;; line number
-            :number true
-            :relativenumber true
-            :signcolumn :yes
-            :cursorline true
-            ;; spacing
-            :tabstop 4
-            :expandtab true
-            :shiftwidth 4
-            :autoindent true
-            :smartindent true
-            ;; line breaking
-            :wrap false
-            :linebreak true
-            :breakindent true
-            ;; no ~swp nonsense
-            :filetype :on
-            :swapfile false
-            :backup false
-            :undofile true
-            ;; terminal
-            :termguicolors true
-            :mouse :a
-            :scrolloff 3
-            :colorcolumn :80
-            ;; folding
-            :foldlevel 99
-            :foldlevelstart 99
-            :foldenable true
-            ;; winbar
-            :winbar "%{%v:lua.require'winbar'.eval()%}"
-            :showmode false
-            ;; listing
-            :listchars {:tab "│ " :trail "␣"}
-            :list true}]
-  (each [k v (pairs opts)]
-    (set! k v)))