From 5f8411b7bf706210a4ff0960032389d015b88b16 Mon Sep 17 00:00:00 2001
From: James McCoy <jamessan@jamessan.com>
Date: Tue, 6 Jun 2017 05:19:28 -0400
Subject: [PATCH] vim-patch:8.0.0176

Problem:    Using :change in between :function and :endfunction fails.
Solution:   Recognize :change inside a function. (ichizok, closes vim/vim#1374)

https://github.com/vim/vim/commit/70bcd7336f9f19304f32c52a86ed5b4b3de852c2
---
 src/nvim/eval.c                     |  8 +++-
 src/nvim/testdir/test_vimscript.vim | 71 +++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+), 1 deletion(-)

diff --git a/src/nvim/eval.c b/src/nvim/eval.c
index 072adb4ebb..72c00ad10b 100644
--- a/src/nvim/eval.c
+++ b/src/nvim/eval.c
@@ -19872,9 +19872,15 @@ void ex_function(exarg_T *eap)
         }
       }
 
-      /* Check for ":append" or ":insert". */
+      // Check for ":append", ":change", ":insert".
       p = skip_range(p, NULL);
       if ((p[0] == 'a' && (!ASCII_ISALPHA(p[1]) || p[1] == 'p'))
+          || (p[0] == 'c'
+              && (!ASCII_ISALPHA(p[1])
+                  || (p[1] == 'h' && (!ASCII_ISALPHA(p[2])
+                                      || (p[2] == 'a'
+                                          && (STRNCMP(&p[3], "nge", 3) != 0
+                                              || !ASCII_ISALPHA(p[6])))))))
           || (p[0] == 'i'
               && (!ASCII_ISALPHA(p[1]) || (p[1] == 'n'
                                            && (!ASCII_ISALPHA(p[2])
diff --git a/src/nvim/testdir/test_vimscript.vim b/src/nvim/testdir/test_vimscript.vim
index a2997b6d4d..b7d12d8c93 100644
--- a/src/nvim/testdir/test_vimscript.vim
+++ b/src/nvim/testdir/test_vimscript.vim
@@ -1064,6 +1064,77 @@ func Test_echo_and_string()
 
 endfunc
 
+"-------------------------------------------------------------------------------
+" Test 95:  lines of :append, :change, :insert			    {{{1
+"-------------------------------------------------------------------------------
+
+function! DefineFunction(name, body)
+    let func = join(['function! ' . a:name . '()'] + a:body + ['endfunction'], "\n")
+    exec func
+endfunction
+
+func Test_script_lines()
+    " :append
+    try
+        call DefineFunction('T_Append', [
+                    \ 'append',
+                    \ 'py <<EOS',
+                    \ '.',
+                    \ ])
+    catch
+        call assert_report("Can't define function")
+    endtry
+    try
+        call DefineFunction('T_Append', [
+                    \ 'append',
+                    \ 'abc',
+                    \ ])
+        call assert_report("Shouldn't be able to define function")
+    catch
+        call assert_exception('Vim(function):E126: Missing :endfunction')
+    endtry
+
+    " :change
+    try
+        call DefineFunction('T_Change', [
+                    \ 'change',
+                    \ 'py <<EOS',
+                    \ '.',
+                    \ ])
+    catch
+        call assert_report("Can't define function")
+    endtry
+    try
+        call DefineFunction('T_Change', [
+                    \ 'change',
+                    \ 'abc',
+                    \ ])
+        call assert_report("Shouldn't be able to define function")
+    catch
+        call assert_exception('Vim(function):E126: Missing :endfunction')
+    endtry
+
+    " :insert
+    try
+        call DefineFunction('T_Insert', [
+                    \ 'insert',
+                    \ 'py <<EOS',
+                    \ '.',
+                    \ ])
+    catch
+        call assert_report("Can't define function")
+    endtry
+    try
+        call DefineFunction('T_Insert', [
+                    \ 'insert',
+                    \ 'abc',
+                    \ ])
+        call assert_report("Shouldn't be able to define function")
+    catch
+        call assert_exception('Vim(function):E126: Missing :endfunction')
+    endtry
+endfunc
+
 "-------------------------------------------------------------------------------
 " Modelines								    {{{1
 " vim: ts=8 sw=4 tw=80 fdm=marker