pub fn get_editor(
git_run_info: &GitRunInfo,
repo: &Repo,
) -> Result<Option<OsString>>Expand description
Get the configured editor, if any.
Because this is primarily intended for use w/ dialoguer::Editor, and it already considers
several environment variables, we only need to consider git-specific config options: the
$GIT_EDITOR environment var and the core.editor config setting. We do so in that order to
match how git resolves the editor to use.
FMI see https://git-scm.com/docs/git-var#Documentation/git-var.txt-GITEDITOR