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Fix Logger.Utils.truncate_n UTF-8 range for two-byte code points #15221

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josevalim merged 1 commit into from
Mar 27, 2026
+1 −1
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Fix Logger.Utils.truncate_n UTF-8 range for two-byte code points #15221

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2 changes: 1 addition & 1 deletion lib/logger/lib/logger/utils.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -228,7 +228,7 @@ defmodule Logger.Utils do
end

def truncate_n(int, n) when int in 0..127, do: {int, n - 1}
def truncate_n(int, n) when int in 127..0x07FF, do: {int, n - 2}
def truncate_n(int, n) when int in 128..0x07FF, do: {int, n - 2}
def truncate_n(int, n) when int in 0x800..0xFFFF, do: {int, n - 3}
def truncate_n(int, n) when int >= 0x10000 and is_integer(int), do: {int, n - 4}

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