GetScript: Installation of plugins fails with errors

[ademin]

Describe the bug
Plugins aren't installed on Windows with GLVS.
Case 1 ($HOME=C:\Users\Алексей Демин). The space char is the one to have a look at:

Messages maintainer: Bram Moolenaar <Bram@vim.org>
"~\vimfiles\GetLatest\GetLatestVimScripts.dat" 3L, 106B
"~\vimfiles\GetLatest\GetLatestVimScripts.dat" 3L, 102B written
E492: Not an editor command: GLVs
"GetLatestVimScripts.dat" 3L, 102B
.downloading new <rainbow_parentheses.zip>
Error detected while processing function getscript#GetLatestVimScripts[166]..<SNR>27_GetOneScript:
line  199:
E739: Cannot create directory: C:/Users/Алексей\ Демин/vimfiles/GetLatest/Installed
line  292:
E151: No match: C:\Users\Алексей Демин\vimfiles\doc\**
line  293:
E344: Can't find directory "C:/Users/Алексей\ Демин/vimfiles/GetLatest" in cdpath
E472: Command failed

Case 2 ($HOME=D:\ ):

Messages maintainer: Bram Moolenaar <Bram@vim.org>
"D:\vimfiles\GetLatest\GetLatestVimScripts.dat" 3L, 106B
"D:\vimfiles\GetLatest\GetLatestVimScripts.dat" 3L, 102B written
"GetLatestVimScripts.dat" 3L, 102B
.downloading new <rainbow_parentheses.zip>
Error detected while processing function getscript#GetLatestVimScripts[166]..<SNR>33_GetOneScript:
line  203:
E472: Command failed
line  292:
E151: No match: D:\vimfiles\doc\**
Downloaded one updated script to <D:\vimfiles/GetLatest>

To Reproduce

1. Configure getscript plugin with respect to the documentation
2. Add a record to the GetLatestVimScripts.dat

ScriptID SourceID Filename
--------------------------
3772 1 :AutoInstall: rainbow_parentheses.vim

3. Run :GLVS

Expected behavior
The plugin has been installed successfully!

Environment:
VIM - Vi IMproved 8.2 (2019 Dec 12, compiled Aug 28 2020 22:02:56)
MS-Windows 64-bit console version
Included patches: 1-1537
Compiled by appveyor@APPVYR-WIN

[ademin]

Add the author of the plugin
@cecamp please, have a look.

For case 1, It looks like the problem with isdirectory(fnameescape('/home/with spaces/path')) -> 0
for directory that is /home/with spaces/path which exists