vim: Enable true color; change colorscheme; tweak GUI

* Enable true color.  Set terminal sequences to to fix the true color
  support in tmux.
* Change colorscheme to flattened_light (solarized).
* Set GUI font and size.
* Disable GUI menu bar.

1 files changed, 11 insertions, 10 deletions

diff --git a/_vimrc b/_vimrc
index f144aa0..5a855a2 100644
--- a/_vimrc
+++ b/_vimrc
@@ -99,23 +99,24 @@ set foldcolumn=1
 " Enable syntax highlighting
 syntax enable
 
-" Enable 256 colors palette in Gnome Terminal
-if $COLORTERM == 'gnome-terminal'
-    set t_Co=256
+set t_Co=256
+if $COLORTERM == 'truecolor'
+    set termguicolors
+endif
+if &term =~# '^screen'
+    " Set terminal sequences for true colors (:help xterm-true-color)
+    let &t_8f = "\<Esc>[38;2;%lu;%lu;%lum"
+    let &t_8b = "\<Esc>[48;2;%lu;%lu;%lum"
 endif
 
-try
-    colorscheme desert
-catch
-endtry
-
-set background=dark
+colorscheme flattened_light
 
 " Set extra options when running in GUI mode
 if has("gui_running")
     set guioptions-=T
     set guioptions-=e
-    set t_Co=256
+    set guioptions-=m
+    set guifont=IBM\ Plex\ Mono\ Medium\ 11
     set guitablabel=%M\ %t
 endif