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b9c9283f72
Problem: If spellfile is missing, then "set spell" in modeline/sandbox
fails with a non-obvious error.
Solution: Check for sandbox early and give a meaningful error.
Fixes #11359
Test case:
# test.latex has `% vim: set spelllang=hu:`
# no spell file for `hu` yet!
nvim -u NORC --cmd 'autocmd FileType tex setlocal spell' --cmd 'set modeline' test.latex
Before:
No spell file for "hu" in utf-8
Download it?
Downloading hu.utf-8.spl...
Error detected while processing /usr/local/share/nvim/runtime/autoload/netrw.vim:
line 583:
E12: Command not allowed from exrc/vimrc in current dir or tag search: au WinEnter *^Iif &ft == "netrw"|call s:NetrwInsureWinVars()|endif
Error detected while processing function spellfile#LoadFile[60]..spellfile#Nread[13]..netrw#NetRead[4]..<SNR>67_NetrwOptionsSave:
line 66:
E171: Missing :endif
Error detected while processing function spellfile#LoadFile[60]..spellfile#Nread:
line 13:
E171: Missing :endif
Error detected while processing function spellfile#LoadFile:
line 60:
E171: Missing :endif
Error detected while processing modelines:
line 1:
E12: Command not allowed from exrc/vimrc in current dir or tag search
After:
Error detected while processing function spellfile#LoadFile:
line 5:
E605: Exception not caught: Cannot download spellfile in sandbox/modeline. Try ":set spell" from the cmdline.
Error detected while processing modelines:
line 1:
E12: Command not allowed from exrc/vimrc in current dir or tag search
The autoload directory is for standard Vim autoload scripts. These are functions used by plugins and for general use. They will be loaded automatically when the function is invoked. See ":help autoload". gzip.vim for editing compressed files netrw*.vim browsing (remote) directories and editing remote files tar.vim browsing tar files zip.vim browsing zip files paste.vim common code for mswin.vim, menu.vim and macmap.vim spellfile.vim downloading of a missing spell file Omni completion files: ccomplete.vim C csscomplete.vim HTML / CSS htmlcomplete.vim HTML javascriptcomplete.vim Javascript phpcomplete.vim PHP pythoncomplete.vim Python rubycomplete.vim Ruby syntaxcomplete.vim from syntax highlighting xmlcomplete.vim XML (uses files in the xml directory)