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-rw-r--r--otfl-font-msc.lua6
1 files changed, 5 insertions, 1 deletions
diff --git a/otfl-font-msc.lua b/otfl-font-msc.lua
index 491229b..cc16d3d 100644
--- a/otfl-font-msc.lua
+++ b/otfl-font-msc.lua
@@ -121,7 +121,11 @@ local sbox = node.id('sub_box')
local function lookup_next_color(head)
for n in node.traverse(head) do
if n.id == glyph then
- return fonts.ids[n.font].color
+ if fonts.ids[n.font] and fonts.ids[n.font].color then
+ return fonts.ids[n.font].color
+ else
+ return -1
+ end
elseif n.id == vlist or n.id == hlist or n.id == sbox then
local r = lookup_next_color(n.list)
if r == -1 then