This is a silly prof of concept that you could have input feedback on a console prompt without flagging the length of that input.

how to build

cmake -B build/ -G Ninja .
cmake --build build/
# run the POC
build/SIF_app

prerequisites

C++ build

• GNU Readline
• C++ compiler

Rust build

• Rust toolchain (rustc, cargo)

Rust implementation

A Rust rewrite is available in the rust/ directory. It replaces the GNU Readline dependency with crossterm for cross-platform terminal handling, and can be used as both a standalone binary and a library crate.

cd rust
cargo build
cargo run

To use as a library in another Rust project:

[dependencies]
safe_input_feedback = { path = "path/to/rust" }