Allow to specify button to use in hints.mouse

Description

Contributor guide

Tech stack

rust

Domain

desktop

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

2

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-3 hours

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

active

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

clear

Prerequisites

basic Rust knowledgefamiliarity with Alacritty configuration

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

70

Research direction

Examine the configuration parsing code for hints, particularly the `hints.mouse` section in `alacritty/src/config/`. Look for how the mouse button is currently handled and add a `button` field with a default of `Left`. Review existing tests in `alacritty/src/config/tests.rs` to ensure backward compatibility and update them accordingly.