KoptInterface:getWordFromBoxes: guard against nil boxes (#6827)

Fixes #6825
4 years ago · 40b4ccffa8
parent 144fd78986
commit 40b4ccffa8
1 changed files with 1 additions and 1 deletions
--- a/frontend/document/koptinterface.lua
+++ b/frontend/document/koptinterface.lua
@ -799,7 +799,7 @@ end
 Get word and word box around `pos`.
 --]]
 function KoptInterface:getWordFromBoxes(boxes, pos)
-    if not pos or #boxes == 0 then return {} end
+    if not pos or not boxes or #boxes == 0 then return {} end
    local i, j = getWordBoxIndices(boxes, pos)
    local lb = boxes[i]
    local wb = boxes[i][j]