Improve comments in a couple private functions

gix-path/src/env/git/mod.rs

@@ -136,8 +136,9 @@ fn git_cmd(executable: PathBuf) -> Command {
     //
     // Separately from that, we can't use --system here, because scopes treated higher than the
     // system scope are possible. This commonly happens on macOS with Apple Git, where the config
-    // file under `/Library` is shown as an "unknown" scope but takes precedence over the system
-    // scope. Although `GIT_CONFIG_NOSYSTEM` will suppress this as well, passing --system omits it.
+    // file under `/Library` or `/Applications` is shown as an "unknown" scope but takes precedence
+    // over the system scope. Although `GIT_CONFIG_NOSYSTEM` suppresses this scope along with the
+    // system scope, passing --system selects only the system scope and omit this "unknown" scope.
     cmd.args(["config", "-lz", "--show-origin", "--name-only"])
         .current_dir(cwd)
         .env_remove("GIT_CONFIG")

tests/tools/src/lib.rs

@@ -594,7 +594,7 @@ fn configure_command<'a, I: IntoIterator<Item = S>, S: AsRef<OsStr>>(
     args: I,
     script_result_directory: &Path,
 ) -> &'a mut std::process::Command {
-    // For simplicity, we extend the `MSYS` variable from from our own environment. This disregards
+    // For simplicity, we extend the `MSYS` variable from our own environment. This disregards
     // state from any prior `cmd.env("MSYS")` or `cmd.env_remove("MSYS")` calls. Such calls should
     // either be avoided, or made after this function returns (but before spawning the command).
     let mut msys_for_git_bash_on_windows = env::var_os("MSYS").unwrap_or_default();