From d1ad8a2fe9606b4b0f01045f72386b08801832b1 Mon Sep 17 00:00:00 2001
From: aster <137767097+aster-void@users.noreply.github.com>
Date: Fri, 6 Jun 2025 17:50:10 +0900
Subject: [PATCH 1/2] feat: handle triple quotes in auto-pairs correctly

---
 helix-core/src/auto_pairs.rs | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/helix-core/src/auto_pairs.rs b/helix-core/src/auto_pairs.rs
index 853290404..5797b623e 100644
--- a/helix-core/src/auto_pairs.rs
+++ b/helix-core/src/auto_pairs.rs
@@ -335,17 +335,22 @@ fn handle_close(doc: &Rope, selection: &Selection, pair: &Pair) -> Transaction {
 /// handle cases where open and close is the same, or in triples ("""docstring""")
 fn handle_same(doc: &Rope, selection: &Selection, pair: &Pair) -> Transaction {
     let mut end_ranges = SmallVec::with_capacity(selection.len());
-
     let mut offs = 0;
 
     let transaction = Transaction::change_by_selection(doc, selection, |start_range| {
         let cursor = start_range.cursor(doc.slice(..));
         let mut len_inserted = 0;
+        let is_triple = cursor >= 2
+            && doc.get_char(cursor - 1) == Some(pair.open)
+            && doc.get_char(cursor - 2) == Some(pair.open);
         let next_char = doc.get_char(cursor);
 
         let change = if next_char == Some(pair.open) {
             //  return transaction that moves past close
-            (cursor, cursor, None) // no-op
+            (cursor, cursor, None) // no-op - don't insert char
+        } else if is_triple {
+            //  ignore triple-quotes
+            (cursor, cursor, Some(Tendril::from_iter([pair.open]))) // only insert one char (normal operation)
         } else {
             let mut pair_str = Tendril::new();
             pair_str.push(pair.open);

From 52696de6def6ff5ed49da34b130ac59bf6aef574 Mon Sep 17 00:00:00 2001
From: aster <137767097+aster-void@users.noreply.github.com>
Date: Mon, 16 Jun 2025 13:55:03 +0900
Subject: [PATCH 2/2] feat: auto-pair triple quotes

---
 helix-core/src/auto_pairs.rs | 27 +++++++++++++++++++++------
 1 file changed, 21 insertions(+), 6 deletions(-)

diff --git a/helix-core/src/auto_pairs.rs b/helix-core/src/auto_pairs.rs
index 5797b623e..866fafaab 100644
--- a/helix-core/src/auto_pairs.rs
+++ b/helix-core/src/auto_pairs.rs
@@ -340,17 +340,32 @@ fn handle_same(doc: &Rope, selection: &Selection, pair: &Pair) -> Transaction {
     let transaction = Transaction::change_by_selection(doc, selection, |start_range| {
         let cursor = start_range.cursor(doc.slice(..));
         let mut len_inserted = 0;
-        let is_triple = cursor >= 2
+        let has_at_least_two_before = cursor >= 2
             && doc.get_char(cursor - 1) == Some(pair.open)
             && doc.get_char(cursor - 2) == Some(pair.open);
+        let has_at_least_three_before =
+            has_at_least_two_before && cursor >= 3 && doc.get_char(cursor - 3) == Some(pair.open);
+
         let next_char = doc.get_char(cursor);
 
-        let change = if next_char == Some(pair.open) {
-            //  return transaction that moves past close
+        // (from, to, replacement)
+        let change = if next_char == Some(pair.close) {
+            // moves past close
             (cursor, cursor, None) // no-op - don't insert char
-        } else if is_triple {
-            //  ignore triple-quotes
-            (cursor, cursor, Some(Tendril::from_iter([pair.open]))) // only insert one char (normal operation)
+        } else if has_at_least_three_before {
+            // don't auto pair more than triple quotes
+            (cursor, cursor, Some(Tendril::from_iter([pair.close]))) // only insert one char (normal operation)
+        } else if has_at_least_two_before {
+            // exactly two before: auto-pair 3 quotes
+            // `''|` -> `'''|'''`
+            (
+                cursor,
+                cursor,
+                Some(Tendril::from_iter([
+                    // first is the default keystroke, the rest 3 are auto-pair
+                    pair.close, pair.close, pair.close, pair.close,
+                ])),
+            )
         } else {
             let mut pair_str = Tendril::new();
             pair_str.push(pair.open);