runtime(dist): centralize safe executable check and add vim library (#13413) Commit: https://github.com/vim/vim/commit/cd8a3eaf5348feacfecab4b374b7ea4ce6a97422 Author: D. Ben Knoble <ben.knoble+github@gmail.com> Date: Sat Nov 4 05:11:17 2023 -0400 runtime(dist): centralize safe executable check and add vim library (https://github.com/vim/vim/issues/13413) Follow up to 816fbcc26 (patch 9.0.1833: [security] runtime file fixes, 2023-08-31) and f7ac0ef50 (runtime: don't execute external commands when loading ftplugins, 2023-09-06). This puts the logic for safe executable checks in a single place, by introducing a central vim library, so all filetypes benefit from consistency. Notable changes: - dist#vim because the (autoload) namespace for a new runtime support library. Supporting functions should get documentation. It might make life easier for NeoVim devs to make the documentation a new file rather than cram it into existing files, though we may want cross-references to it somewhere? - The gzip and zip plugins need to be opted into by enabling execution of those programs (or the global plugin_exec). This needs documentation or discussion. - This fixes a bug in the zig plugin: code setting s:tmp_cwd was removed in f7ac0ef50 (runtime: don't execute external commands when loading ftplugins, 2023-09-06), but the variable was still referenced. Since the new function takes care of that automatically, the variable is no longer needed. Signed-off-by: D. Ben Knoble <ben.knoble+github@gmail.com> Signed-off-by: Christian Brabandt <cb@256bit.org>

" Vim filetype plugin file
" Language: Scheme (R7RS)
" Last Change: 2019-11-19
" Author: Evan Hanson <evhan@foldling.org>
" Maintainer: Evan Hanson <evhan@foldling.org>
" Previous Maintainer: Sergey Khorev <sergey.khorev@gmail.com>
" Repository: https://git.foldling.org/vim-scheme.git
" URL: https://foldling.org/vim/ftplugin/scheme.vim

if exists('b:did_ftplugin')
  finish
endif

let s:cpo = &cpo
set cpo&vim

setl lisp
setl comments=:;;;;,:;;;,:;;,:;,sr:#\|,mb:\|,ex:\|#
setl commentstring=;%s
setl define=^\\s*(def\\k*
setl iskeyword=33,35-39,42-43,45-58,60-90,94,95,97-122,126

let b:undo_ftplugin = 'setl lisp< comments< commentstring< define< iskeyword<'

setl lispwords+=case
setl lispwords+=define
setl lispwords+=define-record-type
setl lispwords+=define-syntax
setl lispwords+=define-values
setl lispwords+=do
setl lispwords+=guard
setl lispwords+=lambda
setl lispwords+=let
setl lispwords+=let*
setl lispwords+=let*-values
setl lispwords+=let-syntax
setl lispwords+=let-values
setl lispwords+=letrec
setl lispwords+=letrec*
setl lispwords+=letrec-syntax
setl lispwords+=parameterize
setl lispwords+=set!
setl lispwords+=syntax-rules
setl lispwords+=unless
setl lispwords+=when

let b:undo_ftplugin = b:undo_ftplugin . ' lispwords<'

let b:did_scheme_ftplugin = 1

if exists('b:is_chicken') || exists('g:is_chicken')
  runtime! ftplugin/chicken.vim
endif

unlet b:did_scheme_ftplugin
let b:did_ftplugin = 1
let &cpo = s:cpo
unlet s:cpo