From 9dc546c6991ddfe88c0eacd56b8ee209904698c4 Mon Sep 17 00:00:00 2001
From: Christian Brabandt <cb@256bit.org>
Date: Tue, 13 Nov 2018 22:29:32 +0100
Subject: [PATCH] use tr() instead of substitute

should be a bit faster
---
 autoload/airline.vim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/autoload/airline.vim b/autoload/airline.vim
index 70700c0e..bc67f20d 100644
--- a/autoload/airline.vim
+++ b/autoload/airline.vim
@@ -98,7 +98,7 @@ endfunction
 function! airline#switch_matching_theme()
   if exists('g:colors_name')
     let existing = g:airline_theme
-    let theme = substitute(tolower(g:colors_name), '-', '_', 'g')
+    let theme = tr(tolower(g:colors_name), '-', '_')
     try
       call airline#switch_theme(theme)
       return 1