From f24aa64cd5af8ab2ae07bf567c4ee91d4d7095c6 Mon Sep 17 00:00:00 2001
From: Guldoman <giulio.lettieri@gmail.com>
Date: Sat, 20 Nov 2021 01:15:13 +0100
Subject: [PATCH] Add `soft_reset` to highlighter

This allows clearing the `lines` table without removing entries.
---
 data/core/doc/highlighter.lua | 7 +++++++
 data/core/doc/init.lua        | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/data/core/doc/highlighter.lua b/data/core/doc/highlighter.lua
index c77e1138..68b66356 100644
--- a/data/core/doc/highlighter.lua
+++ b/data/core/doc/highlighter.lua
@@ -40,6 +40,13 @@ end
 
 function Highlighter:reset()
   self.lines = {}
+  self:soft_reset()
+end
+
+function Highlighter:soft_reset()
+  for i=1,#self.lines do
+    self.lines[i] = false
+  end
   self.first_invalid_line = 1
   self.max_wanted_line = 0
 end
diff --git a/data/core/doc/init.lua b/data/core/doc/init.lua
index 2e72907a..b0f07921 100644
--- a/data/core/doc/init.lua
+++ b/data/core/doc/init.lua
@@ -47,7 +47,7 @@ function Doc:reset_syntax()
   local syn = syntax.get(self.filename or "", header)
   if self.syntax ~= syn then
     self.syntax = syn
-    self.highlighter:reset()
+    self.highlighter:soft_reset()
   end
 end