Cannot open external/internal editor

[PatWie]

Describe the bug
Cannot launch any editor to edit a previous commit message (even the last one).

To Reproduce

cd /tmp
mkdir test && cd  test
git init && touch "a"
git add a &&  git commit -m "override me"

Open gitui and click e when the commit message is highlighted.

Expected behavior
Opening the same editor as when editing a file from the Files tab or clicking ctrl+e when creating the commit message in the first place.

Screenshots

Context (please complete the following information):

• OS/Distro + Version: 18.04.1-Ubuntu
• GitUI Version: gitui 0.22.1 from cargo install
• Rust version: rustc 1.62.0 (a8314ef7d 2022-06-27)

Additional context
The menu item on the bottom of the screenshot mit be missleading. Does this function even exists? If not, then the edit menu item should be removed. The logs indicate a keypress has been detected

10:14:13 [TRACE] (1) gitui::app: [~/.cargo/registry/src/github.jparrowsec.cn-1ecc6299db9ec823/gitui-0.22.1/src/app.rs:382] event: Input(Key(KeyEvent { code: Char('e'), modifiers: NONE, kind: Press, state: NONE }
))

[extrawurst]

ha good point, this UX sucks. the edit is actually about the file selected in the tree below. let me fix that. editing a previous commit messages is a feature not supported yet