From b13a191fbbfe427d1aadaf41419520c43abee141 Mon Sep 17 00:00:00 2001
From: Karim Abou Zeid <kabouzeid@users.noreply.github.com>
Date: Sat, 5 Feb 2022 13:16:19 +0100
Subject: [PATCH] Fix `ZkNewFromTitleSelection` from a visual block selection
 (#35)

---
 lua/zk/util.lua | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lua/zk/util.lua b/lua/zk/util.lua
index beec8e0..2f06c65 100644
--- a/lua/zk/util.lua
+++ b/lua/zk/util.lua
@@ -64,8 +64,9 @@ function M.get_text_in_range(range)
   if vim.tbl_isempty(lines) then
     return nil
   end
-  lines[#lines] = string.sub(lines[#lines], 1, B.character)
-  lines[1] = string.sub(lines[1], A.character + 1)
+  local MAX_STRING_SUB_INDEX = 2^31 - 1 -- LuaJIT only supports 32bit integers for `string.sub` (in block selection B.character is 2^31)
+  lines[#lines] = string.sub(lines[#lines], 1, math.min(B.character, MAX_STRING_SUB_INDEX))
+  lines[1] = string.sub(lines[1], math.min(A.character + 1, MAX_STRING_SUB_INDEX))
   return table.concat(lines, "\n")
 end