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diff --git a/changelog.d/filter-whole-word.fix b/changelog.d/filter-whole-word.fix
new file mode 100644
index 000000000..a831a74cb
--- /dev/null
+++ b/changelog.d/filter-whole-word.fix
@@ -0,0 +1 @@
+Filters with whole_word set to false now also match inside words
diff --git a/lib/pleroma/filter.ex b/lib/pleroma/filter.ex
index 3ab44efb0..fe3fb1c27 100644
--- a/lib/pleroma/filter.ex
+++ b/lib/pleroma/filter.ex
@@ -212,7 +212,7 @@ defmodule Pleroma.Filter do
phrases =
filters
- |> Enum.map(&phrase_regex(&1.phrase, boundary))
+ |> Enum.map(&phrase_regex(&1, boundary))
|> Enum.join("|")
case format do
@@ -223,9 +223,12 @@ defmodule Pleroma.Filter do
def compose_regex(_, _), do: nil
- # Phrases are literal text. Like Mastodon, only add a word boundary
- # where the phrase starts or ends with a word character.
- defp phrase_regex(phrase, boundary) do
+ # Phrases are literal text. Like Mastodon, whole-word filters only get a
+ # word boundary where the phrase starts or ends with a word character.
+ defp phrase_regex(%__MODULE__{phrase: phrase, whole_word: false}, _boundary),
+ do: Regex.escape(phrase)
+
+ defp phrase_regex(%__MODULE__{phrase: phrase}, boundary) do
prefix = if String.match?(phrase, ~r/^\w/u), do: boundary, else: ""
suffix = if String.match?(phrase, ~r/\w$/u), do: boundary, else: ""
diff --git a/test/pleroma/filter_test.exs b/test/pleroma/filter_test.exs
index 5018b30bc..2fc72d9f5 100644
--- a/test/pleroma/filter_test.exs
+++ b/test/pleroma/filter_test.exs
@@ -233,6 +233,17 @@ defmodule Pleroma.FilterTest do
end
end
+ test "matches inside words when whole_word is false" do
+ filters = [%Filter{phrase: "cat", whole_word: false}, %Filter{phrase: "dog"}]
+ pg = Filter.compose_regex(filters)
+ re = Filter.compose_regex(filters, :re)
+
+ for {text, expected} <- [{"a catalog", true}, {"a hotdog", false}, {"a dog", true}] do
+ assert pg_match?(pg, text) == expected
+ assert Regex.match?(re, text) == expected
+ end
+ end
+
test "keeps word boundaries for every phrase in Elixir" do
regex = Filter.compose_regex(filters(["cat", "dog"]), :re)

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