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Showing content from https://github.com/neovim/neovim/commit/eceb0b305e7358e411df7f0f2040e8ed702f631b below:

check for empty value of LUAC_PRG (#16711) · neovim/neovim@eceb0b3 · GitHub

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@@ -28,6 +28,7 @@ local target = io.open(target_file, 'w')

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target:write('#include <stdint.h>\n\n')

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local warn_on_missing_compiler = true

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local varnames = {}

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for argi = 2, #arg, 2 do

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local source_file = arg[argi]

@@ -42,10 +43,11 @@ for argi = 2, #arg, 2 do

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local output

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if options.c then

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local luac = os.getenv("LUAC_PRG")

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if luac then

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if luac and luac ~= "" then

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output = io.popen(luac:format(source_file), "r"):read("*a")

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else

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print("LUAC_PRG is undefined")

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elseif warn_on_missing_compiler then

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print("LUAC_PRG is missing, embedding raw source")

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warn_on_missing_compiler = false

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end

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end

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