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Add info that Regex.scan/3 is only matching non-overlapping matches and corresponding doctests #13153

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merged 2 commits into from
Dec 3, 2023
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Add info that Regex.scan/3 is only matching non-overlapping matches and corresponding doctests #13153

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Added info that Regex.scan/3 is only matching non-overlapping matches…
Lakret Dec 3, 2023
08f454e
Update regex.ex
josevalim Dec 3, 2023
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9 changes: 7 additions & 2 deletions lib/elixir/lib/regex.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -471,8 +471,7 @@ defmodule Regex do
end

@doc ~S"""
Same as `run/3`, but scans the target several times collecting all
matches of the regular expression.
Same as `run/3` but returns all non-overlapping matches of the regular expression.

A list of lists is returned, where each entry in the primary list represents a
match and each entry in the secondary list represents the captured contents.
Expand All @@ -497,6 +496,12 @@ defmodule Regex do
iex> Regex.scan(~r/e/, "abcd")
[]

iex> Regex.scan(~r/ab|bc|cd/, "abcd")
[["ab"], ["cd"]]

iex> Regex.scan(~r/ab|bc|cd/, "abbccd")
[["ab"], ["bc"], ["cd"]]

iex> Regex.scan(~r/\p{Sc}/u, "$, £, and €")
[["$"], ["£"], ["€"]]

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