From 9984b255c008831c91879086f7fcd70ee687d98d Mon Sep 17 00:00:00 2001
From: Kim K <koomen@protonmail.com>
Date: Sun, 17 Feb 2019 15:38:37 +0100
Subject: [PATCH] feat: Also add equal-pair-detecting check when deleting pairs

---
 README.md             | 10 ++++++++++
 doc/AutoPairs.txt     |  5 +++--
 plugin/auto-pairs.vim |  5 +++++
 3 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index ff8642e..be64843 100644
--- a/README.md
+++ b/README.md
@@ -99,6 +99,16 @@ Features
 
         ---
 
+        input:
+            ((|)
+
+        (press <BS> at |)
+
+        output:
+            (|)
+
+        ---
+
         input:
             |]]
 
diff --git a/doc/AutoPairs.txt b/doc/AutoPairs.txt
index 4607797..4e7d91f 100644
--- a/doc/AutoPairs.txt
+++ b/doc/AutoPairs.txt
@@ -281,8 +281,9 @@ Jump to the next closed pair.
 
 Default: 1
 
-Detects when to close a pair by detecting the equality of pairs within the
-current buffer. (This feature is not supported for multibyte pairs)
+Detects when to close a pair and how to delete an existing pair by detecting the
+equality of pairs within the current buffer. (This feature is not supported for
+multibyte pairs)
 
 
                                                 *g:AutoPairsShortcutBackInsert*
diff --git a/plugin/auto-pairs.vim b/plugin/auto-pairs.vim
index 537ca52..4d80e8a 100644
--- a/plugin/auto-pairs.vim
+++ b/plugin/auto-pairs.vim
@@ -342,6 +342,11 @@ func! AutoPairsDelete()
           return "\<BS>"
         end
       end
+      if strlen(open) == 1 && g:AutoPairsEqualPairDetection == 1
+        if s:count(open) !=# s:count(close)
+          return s:backspace(b)
+        endif
+      endif
       return s:backspace(b).s:delete(a)
     end
   endfor