Adopt use of NNN instead of NerdTree and add some aliases

.config/fish/functions/btre.fish

@@ -16,6 +16,7 @@ function btre -a device -d 'Reconnect to a known bluetooth device'
     bluetoothctl pair $devices[$index]
     bluetoothctl trust $devices[$index]
     bluetoothctl connect $devices[$index]
+    sleep 2
 
     pkill bluetoothctl
 end

.config/fish/functions/define_aliases.fish

@@ -2,6 +2,7 @@ function define_aliases -a uname -d 'Defines aliases for commonly used commands'
     alias rcp 'rsync -aP'
     alias dm 'docker-machine'
     alias v 'nvim +FZF'
+    alias j 'joplin'
     alias vg 'vagrant'
     alias tf 'terraform'
     alias tocb 'xclip -in -selection clipboard'

.config/fish/functions/n.fish

@@ -0,0 +1,36 @@
+# Rename this file to match the name of the function
+# e.g. ~/.config/fish/functions/n.fish
+# or, add the lines to the 'config.fish' file.
+
+function n --wraps nnn --description 'support nnn quit and change directory'
+    # Block nesting of nnn in subshells
+    if test -n "$NNNLVL"
+        if [ (expr $NNNLVL + 0) -ge 1 ]
+            echo "nnn is already running"
+            return
+        end
+    end
+
+    # The default behaviour is to cd on quit (nnn checks if NNN_TMPFILE is set)
+    # To cd on quit only on ^G, remove the "-x" as in:
+    #    set NNN_TMPFILE "$XDG_CONFIG_HOME/nnn/.lastd"
+    # NOTE: NNN_TMPFILE is fixed, should not be modified
+    if test -n "$XDG_CONFIG_HOME"
+        set -x NNN_TMPFILE "$XDG_CONFIG_HOME/nnn/.lastd"
+    else
+        set -x NNN_TMPFILE "$HOME/.config/nnn/.lastd"
+    end
+
+    # Unmask ^Q (, ^V etc.) (if required, see `stty -a`) to Quit nnn
+    # stty start undef
+    # stty stop undef
+    # stty lwrap undef
+    # stty lnext undef
+
+    nnn -de $argv
+
+    if test -e $NNN_TMPFILE
+        source $NNN_TMPFILE
+        rm $NNN_TMPFILE
+    end
+end

.vimrc

@@ -3,30 +3,30 @@ call plug#begin('~/.vim/plugged')
 " Contains lots of sensible configurations, which I have in turn omitted from this file
 Plug 'tpope/vim-sensible'
 
-" Always enabled, non-language plugins
 Plug 'tpope/vim-eunuch'
 Plug 'tpope/vim-surround'
 Plug 'tpope/vim-endwise'
-Plug 'w0rp/ale'
-Plug 'morhetz/gruvbox'
 Plug 'itchyny/lightline.vim'
 Plug 'edkolev/tmuxline.vim'
 Plug 'airblade/vim-gitgutter'
 Plug 'vimwiki/vimwiki'
 Plug 'junegunn/goyo.vim'
 Plug 'junegunn/fzf'
+Plug 'reedes/vim-pencil', { 'on': ['HardPencil', 'SoftPencil'] }
+
+if !exists('g:vscode')
+  Plug 'morhetz/gruvbox'
+  Plug 'w0rp/ale'
   Plug 'autozimu/LanguageClient-neovim', {
        \ 'branch': 'next',
        \ 'do': 'bash install.sh',
        \ }
   Plug 'Shougo/deoplete.nvim', { 'do': ':UpdateRemotePlugins' }
 
-
-" Conditionally loaded plugins
   Plug 'tpope/vim-fugitive', { 'on': ['G', 'Git'], 'for': 'gitcommit' }
   Plug 'mileszs/ack.vim', { 'on': 'Ack' }
   Plug 'scrooloose/nerdtree', { 'on': 'NERDTreeToggle' }
-Plug 'reedes/vim-pencil', { 'on': ['HardPencil', 'SoftPencil'] }
+  Plug 'mcchrish/nnn.vim', { 'on': 'NnnPicker' }
   Plug 'junegunn/limelight.vim', { 'on': 'Limelight' }
 
   " Language specific plugins
@@ -46,6 +46,7 @@ Plug 'b4b4r07/vim-hcl'
   Plug 'hashivim/vim-terraform'
   Plug 'PProvost/vim-ps1'
   Plug 'vmchale/dhall-vim'
+endif
 
 call plug#end()
 
@@ -81,7 +82,7 @@ nmap <leader>c <Plug>(lcn-code-lens-action)
 nmap <leader>d <Plug>(lcn-explain-error)
 nnoremap <leader>ls :LanguageClientStop<cr>
 nnoremap <leader>ll :LanguageClientStart<cr>
-nnoremap <leader>n :NERDTreeToggle<cr>
+nnoremap <leader>n :NnnPicker<cr>
 nnoremap <leader>p :FZF<cr>
 nnoremap <leader>a :Ack<cr>
 nnoremap <leader>we :VimwikiAll2HTML<cr>
@@ -109,6 +110,7 @@ let g:LanguageClient_serverCommands = {
     \ 'typescript': ['typescript-language-server', '--stdio'],
     \ 'typescript.tsx': ['typescript-language-server', '--stdio'],
     \ 'elixir': ['~/code/elixir-lsp/elixir-ls/bin/language_server.sh'],
+    \ 'eelixir': ['~/code/elixir-lsp/elixir-ls/bin/language_server.sh'],
     \ 'go': ['gopls'],
     \ 'fsharp': ['dotnet', '~/code/fsprojects/fsharp-language-server/bin/FSharpLanguageServer.dll'],
     \ 'dhall': ['dhall-lsp-server'],
@@ -169,6 +171,9 @@ let g:pencil#map#suspend_af = 'K'
 
 let g:vimwiki_list = [{'path': expand('~/.wiki/')}]
 
+let g:nnn#layout = {'left': '~20%'}
+let g:nnn#command = 'nnn -eHo'
+
 augroup ft_jsx
   au!
   autocmd BufNewFile,BufRead *.jsx  set filetype=javascript.jsx

provision_linux

@@ -62,6 +62,7 @@ function provision_terminal_env -d 'Install base terminal utilities and sync con
         curl \
         kitty-terminfo \
         fzf \
+        nnn
 
     set -l arch_pkgs \
         $base_pkgs \