Switch from ftp.vim to ftp.nluug

[idbrii]

Fix "curl: (6) Could not resolve host: ftp.vim.org" when running tests.

This is the link on https://www.vim.org/download.php#unix on this line:

There is one big file to download that contains almost everything. It
is found in the unix directory

Looks like that change happened years ago to use https instead of ftp: vim/vim#3580

Test

Ran this script under Ubuntu on WSL:

VIM_VERSION=8.1
curl https://ftp.nluug.nl/pub/vim/unix/vim-${VIM_VERSION}.tar.bz2 -o vim.tar.bz2
tar xjf vim.tar.bz2
mv -v vim?? vim
ls vim/src/ | wc -l # outputs 255

I'm not certain it's the correct package, but it has source which seems comparable to cloning from git.

[idbrii]

Some tests finally pass!

This test seems to be the one that fails, but only on older vim versions. Maybe vim 9 fixed something? Regardless, that's unrelated to this change.

[2025-01-08 05:56:52] FAIL: runTest (test_Plugin.Plugin_SuperTab_SimpleTest)
[2025-01-08 05:56:52] ----------------------------------------------------------------------
[2025-01-08 05:56:52] Traceback (most recent call last):
[2025-01-08 05:56:52]   File "/src/UltiSnips/test/vim_test_case.py", line 61, in runTest
[2025-01-08 05:56:52]     self.assertMultiLineEqual(self.output, wanted)
[2025-01-08 05:56:52] AssertionError: ' ---[34 chars]longtext\nlongt\t\nHello\n\n --- some text after --- ' != ' ---[34 chars]longtext\nlongtextlongtext\nHello\n\n --- some text after --- '
[2025-01-08 05:56:52]    --- some text before --- 
[2025-01-08 05:56:52]   
[2025-01-08 05:56:52]   longtextlongtext
[2025-01-08 05:56:52] - longt	
[2025-01-08 05:56:52] + longtextlongtext
[2025-01-08 05:56:52]   Hello
[2025-01-08 05:56:52]   
[2025-01-08 05:56:52]    --- some text after --- 
[2025-01-08 05:56:52] 
[2025-01-08 05:56:52] ----------------------------------------------------------------------
[2025-01-08 05:56:52] Ran 147 tests in 47.365s
[2025-01-08 05:56:52] 
[2025-01-08 05:56:52] FAILED (failures=1)

[SirVer]

Thank you, while not fixing everything, this is clearly a big improvement. ❤️