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-rw-r--r--otfl-font-msc.lua4
1 files changed, 3 insertions, 1 deletions
diff --git a/otfl-font-msc.lua b/otfl-font-msc.lua
index c858e18..bb04927 100644
--- a/otfl-font-msc.lua
+++ b/otfl-font-msc.lua
@@ -174,7 +174,9 @@ end
function luaotfload.colorize(head)
local h = luaotfload.node_colorize(head)
if res then
- tex.pdfpageresources = format("%s\n/ExtGState<<%s>>", tex.pdfpageresources, res)
+ local r = "/ExtGState<<"..res..">>"
+ local s = tex.pdfpageresources:find(r) and "" or r
+ tex.pdfpageresources = tex.pdfpageresources..s
end
return h
end