diff --git a/vimrc b/vimrc
index 3a650fe..1b8abf0 100644
--- a/vimrc
+++ b/vimrc
@@ -2,7 +2,10 @@ syntax on
 filetype plugin indent on
 
 " Make comma the leader key
-:let mapleader=","
+let mapleader=","
+
+" file browser
+let g:netrw_banner = 0
 
 set shiftwidth=2
 set shiftround
@@ -39,8 +42,15 @@ set nobackup
 set noswapfile
 set clipboard=unnamed
 set pastetoggle=<F2>
+set ttymouse=sgr
 set mouse=a
+set mousemodel=popup_setpos
 set lazyredraw
+set completeopt=menu,menuone,popup,noselect,noinsert
+set timeoutlen=600
+set ballooneval
+set balloonevalterm
+set scrolloff=5
 
 " Colour scheme:
 colorscheme PaperColor
@@ -54,24 +64,16 @@ map <up> <nop>
 map <down> <nop>
 map <left> <nop>
 map <right> <nop>
+map <leader>n :Ntree<cr>
 " Select just-pasted text:
 nnoremap <Leader>p `[v`]
 nnoremap Q @@
-" Skip to next linter problems:
-nmap <silent> <leader>an :ALENextWrap<cr>
-nmap <silent> <leader>ap :ALEPreviousWrap<cr>
-nmap <silent> <leader>ad :ALEDetail<cr>
-inoremap <silent><expr> <Tab>
-      \ pumvisible() ? "\<C-n>" : "\<TAB>"
 
 " Markdown configuration:
 autocmd FileType markdown setlocal wrap linebreak
 
-" Nerdtree configuration:
-map <Leader>n :NERDTreeToggle<CR>
-
 " Command-T configuration:
-map <leader>f :CommandTFlush<CR>
+map <leader>tf :CommandTFlush<CR>
 let g:CommandTFileScanner="git"
 let g:CommandTGitScanSubmodules=1
 let g:CommandTGitIncludeUntracked=1
@@ -94,30 +96,70 @@ let g:go_def_mode='gopls'
 let g:go_info_mode='gopls'
 
 " Vim-Rust configuration:
-let g:rustfmt_autosave = 0
+let g:rustfmt_autosave = 1
 
 " ALE configuration:
-let g:ale_linters = {
-      \ 'javascript': ['eslint'],
-      \ 'go': ['gopls'],
-      \ 'rust': ['cargo']
-      \ }
-let g:ale_fixers = {
-      \ '*': ['remove_trailing_lines', 'trim_whitespace'],
-      \ 'javascript': ['prettier'],
-      \ 'go': [],
-      \ 'rust': ['rustfmt']
-      \ }
+set omnifunc=ale#completion#OmniFunc
+function SymbolSearch()
+  call inputsave()
+  let s:pattern = trim(input("symbol search: "))
+  call inputrestore()
+  if len(s:pattern) > 0
+    execute 'ALESymbolSearch' s:pattern
+  endif
+endfunction
+nmap <silent> <leader>af :ALEFirst<cr>
+nmap <silent> <leader>al :ALELast<cr>
+nmap <silent> <leader>an :ALENextWrap<cr>
+nmap <silent> <leader>ap :ALEPreviousWrap<cr>
+nmap <silent> <leader>aN :ALENext -error<cr>
+nmap <silent> <leader>aP :ALEPrevious -error<cr>
+nmap <leader>ad :ALEDetail<cr>
+map <Leader>ss :call SymbolSearch()<CR>
+map <Leader>g :ALEGoToDefinition<CR>
+map <Leader>gt :ALEGoToTypeDefinition<CR>
+map <Leader>f :ALEFindReferences<CR>
+map <Leader>fv :ALEFindReferences -vsplit<CR>
+map <Leader>fh :ALEFindReferences -split<CR>
+map <Leader>ft :ALEFindReferences -tab<CR>
+map <Leader>r :ALERename<CR>
+
+let g:ale_sign_column_always = 1
 let g:ale_fix_on_save = 1
-let g:ale_lint_on_text_changed = 0
+let g:ale_lint_on_text_changed = 1
 let g:ale_lint_on_enter = 1
 let g:ale_lint_on_insert_leave = 1
 let g:ale_lint_on_save = 1
 let g:ale_echo_cursor = 1
-let g:ale_rust_cargo_use_clippy = 0
+let g:ale_lint_delay = 50
+let g:ale_set_balloons = 1
+" NOTE: Needs https://github.com/dense-analysis/ale/issues/3350
+let g:ale_rust_analyzer_config = {
+      \ 'diagnostics': { 'disabled': ['unresolved-import'] },
+      \ 'cargo': { 'loadOutDirsFromCheck': v:true },
+      \ 'procMacro': { 'enable': v:true },
+      \ 'checkOnSave': { 'command': 'clippy', 'enable': v:true }
+      \ }
 let g:ale_go_goimports_options = '-local github.com/sensiblecodeio/cantabular'
 let g:ale_command_wrapper = 'nice -n5'
 let g:ale_completion_enabled = 1
 let g:ale_close_preview_on_insert = 1
 let g:ale_hover_to_preview = 1
 let g:ale_sign_column_always = 1
+let g:ale_history_log_output = 1
+let g:ale_linters = {
+      \ 'javascript': ['eslint'],
+      \ 'go': ['gopls'],
+      \ 'rust': ['analyzer']
+      \ }
+let g:ale_fixers = {
+      \ '*': ['remove_trailing_lines', 'trim_whitespace'],
+      \ 'javascript': ['prettier'],
+      \ 'rust': ['rustfmt'],
+      \ 'go': []
+      \ }
+
+" load ALE only after configured:
+packadd! ale
+
+runtime macros/matchit.vim