# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1642102206 -3600
# Node ID d7e6b85dd89ddddd9fb1d4f8e92616f6b6cb4105
# Parent  dae3c23512fba8a36f3dcada5dc97f726ebf166f
patch 8.2.4082: check for autoload file name and prefix fails

Commit: https://github.com/vim/vim/commit/3049fcf0a189b0fea8468fa308887b8252d93dce
Author: Bram Moolenaar <Bram@vim.org>
Date:   Thu Jan 13 19:25:50 2022 +0000

    patch 8.2.4082: check for autoload file name and prefix fails

    Problem:    Check for autoload file name and prefix fails. (Christian J.
                Robinson)
    Solution:   Only lower case the prefix on systems where the file name is not
                case sensitive.

diff --git a/src/scriptfile.c b/src/scriptfile.c
--- a/src/scriptfile.c
+++ b/src/scriptfile.c
@@ -2156,7 +2156,11 @@ get_autoload_prefix(scriptitem_T *si)
 
     if (p == NULL)
 	return NULL;
+#ifdef CASE_INSENSITIVE_FILENAME
     prefix = strlow_save(p);
+#else
+    prefix = vim_strsave(p);
+#endif
     if (prefix == NULL)
 	return NULL;
 
diff --git a/src/testdir/test_vim9_import.vim b/src/testdir/test_vim9_import.vim
--- a/src/testdir/test_vim9_import.vim
+++ b/src/testdir/test_vim9_import.vim
@@ -1375,6 +1375,31 @@ def Test_vim9_aucmd_autoload()
   &rtp = save_rtp
 enddef
 
+" test using a autoloaded file that is case sensitive
+def Test_vim9_autoload_case_sensitive()
+  var lines =<< trim END
+     vim9script autoload
+     export def CaseSensitive(): string
+       return 'done'
+     enddef
+  END
+
+  mkdir('Xdir/autoload', 'p')
+  writefile(lines, 'Xdir/autoload/CaseSensitive.vim')
+  var save_rtp = &rtp
+  exe 'set rtp^=' .. getcwd() .. '/Xdir'
+
+  lines =<< trim END
+      vim9script
+      import autoload 'CaseSensitive.vim'
+      assert_equal('done', CaseSensitive.CaseSensitive())
+  END
+  CheckScriptSuccess(lines)
+
+  delete('Xdir', 'rf')
+  &rtp = save_rtp
+enddef
+
 " This was causing a crash because suppress_errthrow wasn't reset.
 def Test_vim9_autoload_error()
   var lines =<< trim END
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4082,
+/**/
     4081,
 /**/
     4080,