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Diffstat (limited to 'macros/luatex/generic/barracuda/src/lib-driver/brcd-drv-pdfliteral.lua')
-rw-r--r--macros/luatex/generic/barracuda/src/lib-driver/brcd-drv-pdfliteral.lua6
1 files changed, 5 insertions, 1 deletions
diff --git a/macros/luatex/generic/barracuda/src/lib-driver/brcd-drv-pdfliteral.lua b/macros/luatex/generic/barracuda/src/lib-driver/brcd-drv-pdfliteral.lua
index 50baea1472..b36021f9b6 100644
--- a/macros/luatex/generic/barracuda/src/lib-driver/brcd-drv-pdfliteral.lua
+++ b/macros/luatex/generic/barracuda/src/lib-driver/brcd-drv-pdfliteral.lua
@@ -1,7 +1,7 @@
--
-- ga graphic assembler or
-- Intermediate Graphic Language for barcode drawing
--- Copyright (C) 2019 Roberto Giacomelli
+-- Copyright (C) 2020 Roberto Giacomelli
--
-- All dimensions are in scaled point (sp)
-- ga LuaTeX Driver (native implementation node+pdfliteral)
@@ -13,6 +13,10 @@ local PDFnative = {
_DESCRIPTION = "A LuaTeX native pdfliteral driver for ga graphic stream",
}
+local tex = assert(tex, "This require a Lua powered TeX engine")
+local node = assert(node, "This require a Lua powered TeX engine")
+local font = assert(font, "This require a Lua powered TeX engine")
+
PDFnative.ext = "txt" -- file extension
PDFnative.buf_sep = "\n" -- separation string for buffer concat