Vouch request: [reidliu41]

[reidliu41]

What do you want to work on?

I want to fix #799 - improve the user experience

Why this change?

MacOs used bash 3.2.57 by default, and mapfile is not found. This should be covered for users who have not upgraded to Bash 4 or 5.

(base) m:~ r$ bash --version
GNU bash, version 3.2.57(1)-release (arm64-apple-darwin25)
Copyright (C) 2007 Free Software Foundation, Inc.
(base) m:~ r$
(base) m:~ r$ mapfile
-bash: mapfile: command not found

Checklist

• I wrote this request myself (not AI-generated)
• I have read CONTRIBUTING.md