Rgx is a regex debugger for the terminal — step-through execution, 3 engines,
code generation, and live stream filtering.

rgx is useful if you:

  - Work on remote servers where opening a browser isn't practical — SSH,
    containers, air-gapped environments.
  - Want to pipe regex results into other commands (echo "log" | rgx -p '\d+' |
    sort) — regex101 can't do this.
  - Need engine-specific behavior — check whether a pattern works in Rust's
    regex crate vs. PCRE2 without guessing.
  - Prefer staying in the terminal and find the context switch to a browser
    disruptive.