runtime(netrw): Don't change global options (vim/vim#13910)
Originally reported at: https://github.com/vim-jp/issues/issues/1428
'isk' was unintentionally changed by netrw, regression
introduced in Commit: 71badf9547e8f89571b9a095183671cbb333d528
a262d3f41b
Co-authored-by: K.Takata <kentkt@csc.jp>
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)
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