From 15ca01b649fb35186f1eb9b4422c36f9d8d2c8b4 Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Sat, 20 Aug 2022 06:51:06 +0800
Subject: vim-patch:8.2.4667: expandcmd() fails on an error

Problem:    expandcmd() fails on an error.
Solution:   On failure return the command unmodified. (yegappan Lakshmanan,
            closes vim/vim#10063)
https://github.com/vim/vim/commit/5018a836c030988944a9bbe2fd2e538bf5261a72
---
 src/nvim/eval/funcs.c            |  6 +++---
 src/nvim/testdir/test_expand.vim | 28 +++++++++++++++++-----------
 2 files changed, 20 insertions(+), 14 deletions(-)

(limited to 'src')

diff --git a/src/nvim/eval/funcs.c b/src/nvim/eval/funcs.c
index 456fd9fdf6..1798d43c6c 100644
--- a/src/nvim/eval/funcs.c
+++ b/src/nvim/eval/funcs.c
@@ -2052,10 +2052,10 @@ static void f_expandcmd(typval_T *argvars, typval_T *rettv, FunPtr fptr)
   };
   eap.argt |= EX_NOSPC;
 
+  emsg_off++;
   expand_filename(&eap, &cmdstr, &errormsg);
-  if (errormsg != NULL && *errormsg != NUL) {
-    emsg(errormsg);
-  }
+  emsg_off--;
+
   rettv->vval.v_string = cmdstr;
 }
 
diff --git a/src/nvim/testdir/test_expand.vim b/src/nvim/testdir/test_expand.vim
index e68d55e105..ce414e4b11 100644
--- a/src/nvim/testdir/test_expand.vim
+++ b/src/nvim/testdir/test_expand.vim
@@ -78,10 +78,11 @@ func Test_expandcmd()
   edit a1a2a3.rb
   call assert_equal('make b1b2b3.rb a1a2a3 Xfile.o', expandcmd('make %:gs?a?b? %< #<.o'))
 
-  call assert_fails('call expandcmd("make <afile>")', 'E495:')
-  call assert_fails('call expandcmd("make <afile>")', 'E495:')
+  call assert_equal('make <afile>', expandcmd("make <afile>"))
+  call assert_equal('make <amatch>', expandcmd("make <amatch>"))
+  call assert_equal('make <abuf>', expandcmd("make <abuf>"))
   enew
-  call assert_fails('call expandcmd("make %")', 'E499:')
+  call assert_equal('make %', expandcmd("make %"))
   let $FOO="blue\tsky"
   call setline(1, "$FOO")
   call assert_equal("grep pat blue\tsky", expandcmd('grep pat <cfile>'))
@@ -94,6 +95,11 @@ func Test_expandcmd()
   let $FOO= "foo bar baz"
   call assert_equal("e foo bar baz", expandcmd("e $FOO"))
 
+  if has('unix')
+    " test for using the shell to expand a command argument
+    call assert_equal('{1..4}', expandcmd('{1..4}'))
+  endif
+
   unlet $FOO
   close!
 endfunc
@@ -101,14 +107,14 @@ endfunc
 " Test for expanding <sfile>, <slnum> and <sflnum> outside of sourcing a script
 func Test_source_sfile()
   let lines =<< trim [SCRIPT]
-    :call assert_fails('echo expandcmd("<sfile>")', 'E498:')
-    :call assert_fails('echo expandcmd("<slnum>")', 'E842:')
-    :call assert_fails('echo expandcmd("<sflnum>")', 'E961:')
-    :call assert_fails('call expandcmd("edit <cfile>")', 'E446:')
-    :call assert_fails('call expandcmd("edit #")', 'E194:')
-    :call assert_fails('call expandcmd("edit #<2")', 'E684:')
-    :call assert_fails('call expandcmd("edit <cword>")', 'E348:')
-    :call assert_fails('call expandcmd("edit <cexpr>")', 'E348:')
+    :call assert_equal('<sfile>', expandcmd("<sfile>"))
+    :call assert_equal('<slnum>', expandcmd("<slnum>"))
+    :call assert_equal('<sflnum>', expandcmd("<sflnum>"))
+    :call assert_equal('edit <cfile>', expandcmd("edit <cfile>"))
+    :call assert_equal('edit #', expandcmd("edit #"))
+    :call assert_equal('edit #<2', expandcmd("edit #<2"))
+    :call assert_equal('edit <cword>', expandcmd("edit <cword>"))
+    :call assert_equal('edit <cexpr>', expandcmd("edit <cexpr>"))
     :call assert_fails('autocmd User MyCmd echo "<sfile>"', 'E498:')
     :call writefile(v:errors, 'Xresult')
     :qall!
-- 
cgit