# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1642331704 -3600
# Node ID 2d0ea3f9ffe1935644e45838b0a23bfc4940a7d5
# Parent  5ec89814c0bfb9d24b895c0d55426c8f890dddc8
patch 8.2.4104: Vim9: lower casing the autoload prefix causes problems

Commit: https://github.com/vim/vim/commit/bfac409d0b24d212a6d846edb651c49dac03745f
Author: Bram Moolenaar <Bram@vim.org>
Date:   Sun Jan 16 11:12:12 2022 +0000

    patch 8.2.4104: Vim9: lower casing the autoload prefix causes problems

    Problem:    Vim9: lower casing the autoload prefix causes problems.
    Solution:   Always store the prefix with case preserved.

diff --git a/src/scriptfile.c b/src/scriptfile.c
--- a/src/scriptfile.c
+++ b/src/scriptfile.c
@@ -2156,11 +2156,7 @@ 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
@@ -1485,6 +1485,15 @@ def Test_vim9_autoload_case_sensitive()
   END
   CheckScriptSuccess(lines)
 
+  if !has('fname_case')
+    lines =<< trim END
+        vim9script
+        import autoload 'CaseSensitive.vim'
+        import autoload 'casesensitive.vim'
+    END
+    CheckScriptFailure(lines, 'E1262:')
+  endif
+
   delete('Xdir', 'rf')
   &rtp = save_rtp
 enddef
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 */
 /**/
+    4104,
+/**/
     4103,
 /**/
     4102,