From 66dc16eb8deca9ecc00cfa7a09a01fbf991ff317 Mon Sep 17 00:00:00 2001
From: wzy <32936898+Freed-Wu@users.noreply.github.com>
Date: Wed, 4 Mar 2020 18:02:42 +0800
Subject: [PATCH] Only update guifont if font and size not empty (#21)

Close #20
---
 autoload/thematic/gui.vim | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/autoload/thematic/gui.vim b/autoload/thematic/gui.vim
index 1b1485a..a27335e 100644
--- a/autoload/thematic/gui.vim
+++ b/autoload/thematic/gui.vim
@@ -164,7 +164,12 @@ function! thematic#gui#setFont(th) abort
   let l:fs = thematic#getThemeValue(a:th, 'font-size', -1)
 
   " TODO support list of typefaces with most desired as first in list
-  let l:gf = s:composeGuifontString(l:tf, l:fs)
+  if l:tf == '' || l:fs == '-1'
+    let l:gf = ''
+  else
+    let l:gf = s:composeGuifontString(l:tf, l:fs)
+  endif
+
   if l:gf != ''
     call s:setGuifont(l:gf)
   endif