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Improve automatic downcasing of errors (#2777)

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Jonatan Kłosko 2024-09-09 18:40:50 +02:00 committed by GitHub
parent 2eb5963efe
commit 397f64e5aa
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1 changed files with 16 additions and 1 deletions
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lib/livebook/utils.ex
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@ -320,6 +320,8 @@ defmodule Livebook.Utils do
@doc """ @doc """
Changes the first letter in the given string to lower case. Changes the first letter in the given string to lower case.
If the second letter is uppercase, the first letter case is kept.
## Examples ## Examples
iex> Livebook.Utils.downcase_first("Sippin tea") iex> Livebook.Utils.downcase_first("Sippin tea")
@ -328,6 +330,9 @@ defmodule Livebook.Utils do
iex> Livebook.Utils.downcase_first("Short URL") iex> Livebook.Utils.downcase_first("Short URL")
"short URL" "short URL"
iex> Livebook.Utils.downcase_first("URL invalid")
"URL invalid"
iex> Livebook.Utils.downcase_first("") iex> Livebook.Utils.downcase_first("")
"" ""
@ -335,7 +340,17 @@ defmodule Livebook.Utils do
@spec downcase_first(String.t()) :: String.t() @spec downcase_first(String.t()) :: String.t()
def downcase_first(string) do def downcase_first(string) do
{first, rest} = String.split_at(string, 1) {first, rest} = String.split_at(string, 1)
String.downcase(first) <> rest
should_downcase? =
if second = String.at(rest, 0) do
second == String.downcase(second)
end
if should_downcase? do
String.downcase(first) <> rest
else
string
end
end end
@doc """ @doc """