Re: [vim/vim] runtime(zip)!: Customizable zip/unzip commands (PR #20832)

curbe454 left a comment (vim/vim#20832)

The default commands use `zip` and `unzip`, and I tried using `7z`:

```vim
let g:zip_browse= ["printf", "'';",
  \ "7zlbaf() { 7z l -ba \"$@\" | awk '{print ($3 ~ /D[^[:space:]]{4}/ ? $6 \"/\" : $6)}'; }",
  \ " && ", "7zlbaf"]    " or save command as a file with `#!/bin/sh`
let g:zip_read= ["7z", "x", "-so"]
let g:zip_extract= ["7z", "x"]
let g:zip_delete= ["7z", "d"]
let g:zip_update= ["7z", "u"]
```

I found that 7z behaviors different on file names with special characters, such as [`a[a].txt`](https://github.com/vim/vim/blob/975e191dc817d8d00abca7197c4529a417c2f805/src/testdir/test_plugin_zip.vim#L187:194) or [`a*.txt`](https://github.com/vim/vim/blob/975e191dc817d8d00abca7197c4529a417c2f805/src/testdir/test_plugin_zip.vim#L196:L203). For example:

```sh
$ ls zipglob
'a[a].txt'  'a*.txt'  'a?.txt'  'a\.txt'  'a\\.txt'
$ wc -l 'zipglob/a*.txt'
1 zipglob/a*.txt
$ unzip -p exp.zip 'zipglob/a\*.txt' | wc -l
1
$ 7z x -so exp.zip 'zipglob/a\*.txt' | wc -l
2
```

This means the behavior of visiting(read/write) files that contains special character in a zip file without `zip`/`unzip` is unpredictable.

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