ref(nvim): made everything a tiny module

.config/nvim/fnl/opts/init.fnl

@@ -0,0 +1,44 @@
+(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'opts.winbar'.eval()%}"
+            :showmode false
+            ;; listing
+            :listchars {:tab "│ " :trail "␣"}
+            :list true}]
+  (each [k v (pairs opts)]
+    (set! k v)))

.config/nvim/fnl/opts/winbar.fnl

@@ -0,0 +1,19 @@
+(local M {})
+(local api vim.api)
+
+(api.nvim_set_hl 0 :WinBar {:fg "#dedede"})
+(api.nvim_set_hl 0 :WinBarPath {:bg "#dedede"})
+(api.nvim_set_hl 0 :WinBarModified {:bg "#dedede" :bold true})
+
+(fn M.eval []
+  (let [buffer (api.nvim_win_get_buf 0)]
+    (var bufname (vim.fn.bufname buffer))
+    (var modified "")
+    (var readonly "")
+    (when (. (. vim.bo buffer) :readonly) (set readonly "[RO] "))
+    (when (. (. vim.bo buffer) :modified) (set modified "[+] "))
+    (set bufname (vim.fn.fnamemodify bufname ":p:~"))
+    (.. "%=" "%#WinBarModified#" readonly modified "%*" "%#WinBarPath#" bufname
+        "%*")))
+
+M