fix(core): match inside closest pair inconsitency

For example (rust):
`fn func() {func("string");}`
When the cursor was on the opening quote and you pressed "mim", new
selection was inside quotes, but it must be inside parentheses (around
the quotes). Previously, this only worked for closed pairs.

helix-core/src/surround.rs

@@ -71,7 +71,7 @@ fn find_nth_closest_pairs_ts(
         }
 
         // In case found brackets are partially inside current selection.
-        if range.from() < opening || closing < range.to() - 1 {
+        if range.from() <= opening || closing < range.to() - 1 {
             closing = next_grapheme_boundary(text, closing);
         } else {
             skip -= 1;

helix-term/tests/test/movement.rs

@@ -409,6 +409,32 @@ async fn match_around_closest_ts() -> anyhow::Result<()> {
     Ok(())
 }
 
+#[tokio::test(flavor = "multi_thread")]
+async fn match_inside_closest_ts() -> anyhow::Result<()> {
+    // Match inside must not match inside the pair we are currently on.
+    test_with_config(
+        AppBuilder::new().with_file("foo.rs", None),
+        (
+            r#"fn main() {func(#[|"]#string");}"#,
+            "mim",
+            r#"fn main() {func(#[|"string"]#);}"#,
+        ),
+    )
+    .await?;
+
+    test_with_config(
+        AppBuilder::new().with_file("foo.rs", None),
+        (
+            r#"fn main() {func("string#["|]#);}"#,
+            "mim",
+            r#"fn main() {func(#["string"|]#);}"#,
+        ),
+    )
+    .await?;
+
+    Ok(())
+}
+
 /// Ensure the very initial cursor in an opened file is the width of
 /// the first grapheme
 #[tokio::test(flavor = "multi_thread")]