# version.ReleaseSuffix.patch

- **Module:** version.ReleaseSuffix
- **Package:** libtmux
- **Language:** Rust
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-rs/blob/f0e37052c232636b61d095817046e6bfc8f2ca40/crates/libtmux/src/version.rs#L93
- **Page:** https://libtmux.org/en/rs/latest/reference/version-releasesuffix-patch/

```
version.ReleaseSuffix.patch(letter: char) -> Option<Self>
```

Construct a lowercase patch-letter suffix.

Returns `None` when `letter` is not an ASCII lowercase letter.

## Example

```rust
use libtmux::ReleaseSuffix;

let suffix = ReleaseSuffix::patch('b').expect("b is a patch letter");
assert_eq!(suffix.patch_letter(), Some('b'));
assert_eq!(ReleaseSuffix::patch('B'), None);
```