From 8a845ab3efd87e3c49e4b756a0e74f8e06303fb1 Mon Sep 17 00:00:00 2001
From: Jan Edmund Lazo <janedmundlazo@hotmail.com>
Date: Tue, 11 Sep 2018 22:39:15 -0400
Subject: vim-patch:8.1.0219: expanding ## fails to escape backtick

Problem:    Expanding ## fails to escape backtick.
Solution:   Escape a backtick in a file name. (closes vim/vim#3257)
https://github.com/vim/vim/commit/2c8c681bfcd5138a0ec8ce018216dc2dc69a11a0
---
 src/nvim/ex_docmd.c            | 2 +-
 src/nvim/testdir/test_edit.vim | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/nvim/ex_docmd.c b/src/nvim/ex_docmd.c
index 03f1446265..6586d82fae 100644
--- a/src/nvim/ex_docmd.c
+++ b/src/nvim/ex_docmd.c
@@ -8735,7 +8735,7 @@ static char_u *arg_all(void)
 #ifndef BACKSLASH_IN_FILENAME
             || *p == '\\'
 #endif
-            ) {
+            || *p == '`') {
           // insert a backslash
           if (retval != NULL) {
             retval[len] = '\\';
diff --git a/src/nvim/testdir/test_edit.vim b/src/nvim/testdir/test_edit.vim
index 989adfce8f..b1fce07f39 100644
--- a/src/nvim/testdir/test_edit.vim
+++ b/src/nvim/testdir/test_edit.vim
@@ -1338,6 +1338,14 @@ func! Test_edit_rightleft()
   bw!
 endfunc
 
+func Test_edit_backtick()
+  next a\`b c
+  call assert_equal('a`b', expand('%'))
+  next
+  call assert_equal('c', expand('%'))
+  call assert_equal('a\`b c', expand('##'))
+endfunc
+
 func Test_edit_quit()
   edit foo.txt
   split
-- 
cgit