Update vimrc

home/.vimrc

@@ -3,8 +3,7 @@
 " Arch defaults
 runtime! archlinux.vim
 
-
-set modeline
+set modeline                " enable vim modelines
 set clipboard^=unnamedplus  " system clipboard (requires +clipboard)
 set number                  " enable line numbers
 set confirm                 " ask confirmation for some things, like save before quit, etc.
@@ -24,6 +23,22 @@ endif
 syntax enable
 if has('termguicolors') && $DISPLAY !=? ''
     set termguicolors
+    " fix true colours in some terminals
+    if !has('nvim') && !($TERM =~? 'xterm' || &term =~? 'xterm')
+        let $TERM = 'xterm-256color'
+        let &term = 'xterm-256color'
+    endif
+endif
+
+" change cursor shape for different modes
+if !has('nvim') && exists('$TMUX')
+    let &t_SI = "\<Esc>Ptmux;\<Esc>\e[5 q\<Esc>\\"
+    let &t_SR = "\<Esc>Ptmux;\<Esc>\e[4 q\<Esc>\\"
+    let &t_EI = "\<Esc>Ptmux;\<Esc>\e[2 q\<Esc>\\"
+elseif !has('nvim')
+    let &t_SI = "\e[6 q"
+    let &t_SR = "\e[4 q"
+    let &t_EI = "\e[2 q"
 endif
 
 " paste while in insert mode