feat(neovim): switch to filetype.lua

Replaces old filetype.vim & scripts.vim.

home/editors/neovim/default.nix

@@ -83,6 +83,5 @@ in {
     withPython3 = false;
   };
 
-  xdg.configFile."nvim/filetype.vim".source = ./filetype.vim;
+  xdg.configFile."nvim/filetype.lua".source = ./filetype.lua;
-  xdg.configFile."nvim/scripts.vim".source = ./scripts.vim;
 }

home/editors/neovim/filetype.lua

@@ -0,0 +1,54 @@
+-- opt-in to filetype.lua
+vim.g.do_filetype_lua = 1
+vim.g.did_load_filetypes = 0
+
+vim.filetype.add({
+  extension = {
+    vert = "glsl",
+    tesc = "glsl",
+    tese = "glsl",
+    glsl = "glsl",
+    geom = "glsl",
+    frag = "glsl",
+    comp = "glsl",
+    rgen = "glsl",
+    rmiss = "glsl",
+    rchit = "glsl",
+    rahit = "glsl",
+    rint = "glsl",
+    rcall = "glsl",
+  },
+  pattern = {
+    [".env.*"] = "direnv",
+    [".*"] = function(path, bufnr)
+      local first_line = vim.api.nvim_buf_get_lines(bufnr, 0, 1, true)[1]
+      if first_line:match("^#!.*nix%-shell") ~= nil then
+        local second_line = vim.api.nvim_buf_get_lines(bufnr, 1, 2, true)[1]
+        local command = second_line:match("^#!.*nix%-shell .*%-i ([%a%d]*)")
+        if command == nil then
+          return nil
+        elseif command == "sh" or command == "bash" then
+          return "bash"
+        elseif command == "ksh" then
+          return "ksh"
+        elseif command == "zsh" then
+          return "zsh"
+        elseif command == "make" then
+          return "make"
+        elseif command == "python" then
+          return "python"
+        elseif command == "node" then
+          return "javascript"
+        elseif command == "runhaskell" then
+          return "haskell"
+        elseif command == "ghci" then
+          return "haskell"
+        end
+
+        return nil
+      end
+
+      return nil
+    end
+  },
+})

home/editors/neovim/filetype.vim

@@ -1,2 +0,0 @@
-au BufRead,BufNewFile *.nix set filetype=nix
-

home/editors/neovim/init.lua

@@ -19,6 +19,10 @@ vim.g.camelcasemotion_key = "<leader>"
 vim.opt.relativenumber = true
 vim.opt.splitbelow = true
 
+-- opt-in to filetype.lua
+vim.g.do_filetype_lua = 1
+vim.g.did_load_filetypes = 0
+
 vim.g.nvcode_termcolors = 256
 vim.cmd("syntax on")
 vim.cmd("colorscheme nvcode")

home/editors/neovim/scripts.vim

@@ -1,25 +0,0 @@
-if did_filetype()
-  finish
-endif
-if getline(1) =~ '^#!.*nix-shell'
-  let s:matches = matchlist(getline(2), '^#!.*nix-shell .*-i \([^ \t\n]\+\)')
-  let s:command = s:matches[1]
-  echo s:command
-  if s:command != ''
-    if s:command =~# '^\(bash\d*\|\|ksh\d*\|sh\)\>'
-      call dist#ft#SetFileTypeSH(s:command)
-    elseif s:command == 'zsh'
-      set ft=zsh
-    elseif s:command =~ 'make\>'
-      set ft=make
-    elseif s:command =~ '^node\(js\)\=\>\|^js\>'
-      set ft=javascript
-    elseif s:command =~ '^runhaskell'
-      set ft=haskell
-    elseif s:command =~ '^ghci'
-      set ft=haskell
-    elseif s:command =~ 'python'
-      set ft=python
-    endif
-  endif
-endif