vim expandtab doesn't work after new installation <pre><code>let mapleader = "," set number set textwidth=79 " lines longer than 79 columns will be broken set shiftwidth=4 " operation &gt;&gt; indents 4 columns; &lt;&lt; unindents 4 columns set tabstop=4 " a hard TAB displays as 4 columns set expandtab " insert spaces when hitting TABs set softtabstop=4 " insert/delete 4 spaces when hitting a TAB/BACKSPACE set shiftround " round indent to multiple of 'shiftwidth' set cindent " align the new line indent with the previous line set nobackup set nowritebackup set noswapfile vnoremap &lt; &lt;gv " continue visual selecting after shiftwidh vnoremap &gt; &gt;gv nnoremap &lt;C-h&gt; &lt;C-w&gt;h nnoremap &lt;C-j&gt; &lt;C-w&gt;j nnoremap &lt;C-k&gt; &lt;C-w&gt;k nnoremap &lt;C-l&gt; &lt;C-w&gt;l nnoremap j gj nnoremap k gk nnoremap &lt;Leader&gt;r :w \| !clear &amp;&amp; ./%&lt;CR&gt; command W w !sudo tee % &gt; /dev/null noremap &lt;silent&gt;&lt;Leader&gt;/ :nohls&lt;CR&gt; set clipboard=unnamedplus set paste set ignorecase </code></pre> <p>Somehow after reinstallation of my arch linux, vim stoped work poperly. After doing the same I did couple days ago with old system - now python complains about indentation.</p> <p>I have no installed plugins or whatever, why does this broke?</p> <p>P.S. already viewed same quiestions, but them was about plugins, which I doesn't have. P.S. Noticed that after <code>:</code> vim won't start newline according <code>cindent</code></p> <p>Still indentation brokes after <code>:set paste</code>. Why this happens?</p>