From 0360160a38aa3b04f666f2b347aed25242340d49 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Mon, 8 Aug 2022 14:17:30 +0200
Subject: Tighter syntax rules

---
 editors/vim/syntax/bruijn.vim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'editors/vim/syntax')

diff --git a/editors/vim/syntax/bruijn.vim b/editors/vim/syntax/bruijn.vim
index d11cccc..45e75d9 100644
--- a/editors/vim/syntax/bruijn.vim
+++ b/editors/vim/syntax/bruijn.vim
@@ -7,7 +7,7 @@ endif
 
 syn match bruijnApplication /[()]/
 syn match bruijnAbstraction /[[\]]/
-syn match bruijnIndex display "\d"
+syn match bruijnIndex /\([^0-9]\)\@<=\d\([^0-9]\)\@=/
 syn match bruijnNumber /[+-]\d\+/
 syn match bruijnDefinition /^\t*\S\+/
 syn match bruijnKeyword /:test\|:import\|:print/
-- 
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