From b281833d3e079d7d19d5f53c49655abc29db00db Mon Sep 17 00:00:00 2001
From: Hiro <starkzhidian@gmail.com>
Date: Wed, 28 Aug 2024 10:47:58 +0800
Subject: [PATCH] --bugfix=Fix SymbolPairMatch#matchBestPair return incorrect
 result when commitText is multi characters

---
 .../rosemoe/sora/widget/CodeEditor.java       |  4 +--
 .../rosemoe/sora/widget/SymbolPairMatch.java  | 32 +++++++++----------
 2 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/editor/src/main/java/io/github/rosemoe/sora/widget/CodeEditor.java b/editor/src/main/java/io/github/rosemoe/sora/widget/CodeEditor.java
index c1afe4d3..70f0f46a 100644
--- a/editor/src/main/java/io/github/rosemoe/sora/widget/CodeEditor.java
+++ b/editor/src/main/java/io/github/rosemoe/sora/widget/CodeEditor.java
@@ -1878,7 +1878,7 @@ public void commitText(CharSequence text, boolean applyAutoIndent) {
         // replace text
         SymbolPairMatch.SymbolPair pair = null;
         if (getProps().symbolPairAutoCompletion && text.length() > 0) {
-            var firstCharFromText = text.charAt(0);
+            var endCharFromText = text.charAt(text.length() - 1);
 
             char[] inputText = null;
 
@@ -1889,7 +1889,7 @@ public void commitText(CharSequence text, boolean applyAutoIndent) {
 
             pair = languageSymbolPairs.matchBestPair(
                     this, cursor.left(),
-                    inputText, firstCharFromText
+                    inputText, endCharFromText
             );
         }
 
diff --git a/editor/src/main/java/io/github/rosemoe/sora/widget/SymbolPairMatch.java b/editor/src/main/java/io/github/rosemoe/sora/widget/SymbolPairMatch.java
index 8d354fab..3b85fa95 100644
--- a/editor/src/main/java/io/github/rosemoe/sora/widget/SymbolPairMatch.java
+++ b/editor/src/main/java/io/github/rosemoe/sora/widget/SymbolPairMatch.java
@@ -23,6 +23,8 @@
  */
 package io.github.rosemoe.sora.widget;
 
+import android.text.TextUtils;
+
 import androidx.annotation.Nullable;
 
 import java.util.ArrayList;
@@ -125,10 +127,10 @@ public final List<SymbolPair> matchBestPairList(char editChar) {
     }
 
     @Nullable
-    public final SymbolPair matchBestPair(CodeEditor editor, CharPosition cursorPosition, char[] inputCharArray, char firstChar) {
+    public final SymbolPair matchBestPair(CodeEditor editor, CharPosition cursorPosition, char[] inputCharArray, char endChar) {
         final Content content = editor.getText();
         // do not apply single character pairs for text with length > 1
-        var singleCharPair = inputCharArray == null ? matchBestPairBySingleChar(firstChar) : null;
+        var singleCharPair = inputCharArray == null ? matchBestPairBySingleChar(endChar) : null;
 
         // matches single character symbol pair first
         if (singleCharPair != null) {
@@ -137,7 +139,7 @@ public final SymbolPair matchBestPair(CodeEditor editor, CharPosition cursorPosi
         }
 
         // find all possible lists, with a single character for fast search
-        var matchList = matchBestPairList(firstChar);
+        var matchList = matchBestPairList(endChar);
 
         SymbolPair matchPair = null;
         for (var pair : matchList) {
@@ -150,7 +152,7 @@ public final SymbolPair matchBestPair(CodeEditor editor, CharPosition cursorPosi
             var matchFlag = 1;
             var insertIndex = cursorPosition.index;
 
-            // the size = 1
+            // the size = 1, we need compare characters before cursor, ensure it match the whole open char array
             if (inputCharArray == null) {
                 var arrayIndex = openCharArray.length - 2;
                 while (arrayIndex >= 0) {
@@ -178,19 +180,17 @@ public final SymbolPair matchBestPair(CodeEditor editor, CharPosition cursorPosi
                     matchFlag &= inputCharArray[charIndex] == openCharArray[pairIndex] ? 1 : 0;
                 }
 
-                // input text and symbol pair text equal
-                if (pairIndex == 0) {
-                    continue;
-                }
+                // input text and symbol pair text not equal fully, continue compare characters before cursor
+                if (matchFlag == 1 && pairIndex > 0) {
+                    // When the loop is stopped the character position
+                    // is still in the first position of the matched characters,
+                    // we need to replace this character,
+                    // so we need to subtract a character position
+                    insertIndex--;
 
-                // When the loop is stopped the character position
-                // is still in the first position of the matched characters,
-                // we need to replace this character,
-                // so we need to subtract a character position
-                insertIndex--;
-
-                for (; pairIndex >= 0; insertIndex--, pairIndex--) {
-                    matchFlag &= content.charAt(insertIndex) == openCharArray[pairIndex] ? 1 : 0;
+                    for (; pairIndex >= 0; insertIndex--, pairIndex--) {
+                        matchFlag &= content.charAt(insertIndex) == openCharArray[pairIndex] ? 1 : 0;
+                    }
                 }
             }