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26cdff0e92
runtime(dist): centralize safe executable check and add vim library (vim/vim#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.
cd8a3eaf53
Co-authored-by: D. Ben Knoble <ben.knoble+github@gmail.com>
18 lines
524 B
VimL
18 lines
524 B
VimL
vim9script
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# Vim runtime support library
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#
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# Maintainer: The Vim Project <https://github.com/vim/vim>
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# Last Change: 2023 Oct 25
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export def IsSafeExecutable(filetype: string, executable: string): bool
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var cwd = getcwd()
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return get(g:, filetype .. '_exec', get(g:, 'plugin_exec', 0))
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&& (fnamemodify(exepath(executable), ':p:h') !=# cwd
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|| (split($PATH, has('win32') ? ';' : ':')->index(cwd) != -1
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&& cwd != '.'))
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enddef
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# Uncomment this line to check for compilation errors early
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# defcompile
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