From 08ee355694d8f897002b8276cfa4f796d2632818 Mon Sep 17 00:00:00 2001
From: Reed Esau <reed@esau.org>
Date: Fri, 10 Jun 2016 21:26:23 -0600
Subject: [PATCH] map <cr> only if not already mapped

---
 autoload/pencil.vim | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/autoload/pencil.vim b/autoload/pencil.vim
index 6c20340..cceb33c 100644
--- a/autoload/pencil.vim
+++ b/autoload/pencil.vim
@@ -421,7 +421,14 @@ fun! pencil#init(...) abort
     ino <buffer> : :<c-g>u
     ino <buffer> <c-u> <c-g>u<c-u>
     ino <buffer> <c-w> <c-g>u<c-w>
-    ino <buffer> <cr> <c-g>u<cr>
+
+    " map <cr> only if not already mapped
+    if empty(maparg('<cr>', 'n'))
+      ino <buffer> <cr> <c-g>u<cr>
+      let b:pencil#cr_mapped = 1
+    el
+      let b:pencil#cr_mapped = 0
+    en
   el
     sil! iu <buffer> .
     sil! iu <buffer> !
@@ -431,7 +438,11 @@ fun! pencil#init(...) abort
     sil! iu <buffer> :
     sil! iu <buffer> <c-u>
     sil! iu <buffer> <c-w>
-    sil! iu <buffer> <cr>
+
+    " unmap <cr> only if we mapped it ourselves
+    if exists('b:pencil#cr_mapped') && b:pencil#cr_mapped
+      sil! iu <buffer> <cr>
+    en
   en
 endf