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Return nothing gracefully if no sequence is provided

Alois Mahdal 3 years ago
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d584e65b5e
1 changed files with 1 additions and 0 deletions
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      src/imapdomo.lua

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src/imapdomo.lua View File

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     --
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     --
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     -- Return first *num* elements from sequence
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     -- Return first *num* elements from sequence
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     --
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     --
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+    if not seq then return seq end
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     local result = seq:is_smaller(0)    -- HACK to generate empty sequence
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     local result = seq:is_smaller(0)    -- HACK to generate empty sequence
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     for idx, value in ipairs(seq) do
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     for idx, value in ipairs(seq) do
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         if idx > num then break end
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         if idx > num then break end