feat(neovim): migrate most vimscript to lua

home/editors/neovim/lightline.lua

@@ -0,0 +1,54 @@
+function LspStatus()
+  local sl = ""
+  if not vim.tbl_isempty(vim.lsp.buf_get_clients(0)) then
+    local errors = #vim.diagnostic.get(0, { severity = vim.diagnostic.severity.ERROR })
+    local warnings = #vim.diagnostic.get(0, { severity = vim.diagnostic.severity.WARN })
+    local infos = #vim.diagnostic.get(0, { severity = vim.diagnostic.severity.INFO })
+    local hints = #vim.diagnostic.get(0, { severity = vim.diagnostic.severity.HINT })
+    if (errors > 0 or warnings > 0 or infos > 0 or hints > 0) then
+      if errors > 0 then
+        sl = sl .. "E" .. errors
+      end
+      if warnings > 0 then
+        sl = sl .. " W" .. warnings
+      end
+      if infos > 0 then
+        sl = sl .. " I" .. infos
+      end
+      if hints > 0 then
+        sl = sl .. " H" .. hints
+      end
+    else
+      sl = sl .. "🗸"
+    end
+  end
+  return sl
+end
+
+function GitStatus()
+  local status = vim.b.gitsigns_status
+  return status ~= nil and status or ""
+end
+
+vim.g.lightline = {
+  colorscheme = "powerline",
+  active = {
+    left = {
+      { "mode", "paste" },
+      { "lspstatus", "readonly", "filename", "gitstatus", "modified" },
+    },
+  },
+  component_expand = {
+    lspstatus = "{ -> luaeval('LspStatus()')}",
+    gitstatus = "{ -> luaeval('GitStatus()')}",
+  },
+}
+
+-- update on lsp status changes
+vim.cmd([[
+  augroup lightline_diagnostics
+    autocmd!
+    autocmd User LspProgressUpdate call lightline#update()
+    autocmd DiagnosticChanged * call lightline#update()
+  augroup END
+]])