runtime(dist): Make dist/vim.vim work properly when lacking vim9script support (vim/vim#13487)
`:return` cannot be used outside of `:function` (or `:def`) in older Vims
lacking Vim9script support or in Neovim, even when evaluation is being skipped
in the dead `:else` branch.
Instead, use the pattern described in `:h vim9-mix`, which uses `:finish` to end
script processing before it reaches the vim9script stuff.
b2a4c110a5
Co-authored-by: Sean Dewar <seandewar@users.noreply.github.com>
runtime(dist): add legacy version for central vim library
Also, enable the zip and gzip plugins by default, unless those variables
were not explicitly set by the user.
related: vim/vim#134134f174f0de9
Co-authored-by: Christian Brabandt <cb@256bit.org>
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>
