update nvim config

.config/nvim/coc-settings.json

@@ -44,9 +44,12 @@
             "filetypes": [
                 "mun"
             ]
-        }
+        },
+       "zls" : {
+           "command": "zls",
+           "filetypes": ["zig"]
+       }
     },
     "java.format.enabled": true,
-    "java.format.onType.enabled": true,
+    "java.format.onType.enabled": true
-    "java.format.settings.url": "/home/lordmzte/.config/coc/extensions/node_modules/redhat.java/https:/raw.githubusercontent.com/google/styleguide/gh-pages/eclipse-java-google-style.xml"
 }

.config/nvim/lua/pluginconf/coc.lua

@@ -12,3 +12,22 @@ vim.g.coc_global_extensions = {
     "coc-tabnine",
     "coc-toml",
 }
+
+local function check_back_space()
+  local col = vim.fn.col(".") - 1
+  return col <= 0 or vim.fn.getline("."):sub(col, col):match("%s")
+end
+
+function tab_completion()
+  if vim.fn.pumvisible() > 0 then
+    return vim.api.nvim_replace_termcodes("<C-n>", true, true, true)
+  end
+
+  if check_back_space() then
+    return vim.api.nvim_replace_termcodes("<TAB>", true, true, true)
+  end
+
+  return vim.fn["coc#refresh"]()
+end
+
+vim.api.nvim_set_keymap("i", "<TAB>", "v:lua.tab_completion()", { expr = true, noremap = false })