Of course, IDE is good at doing this, but often we need to search in old commits (investigate issues in release versions etc), and switching commits in IDE can be troublesome and slow. It works by analyzing source code with ANTLR, extracting symbols for storage incrementally, fast, and space-efficient. Now supports Java, JavaScript, C, C++, CSharp, Go, PHP, Python, CSS, SCSS, LESS and R. GitHub adds this feature several years ago but seems that it only works for the main branch, and GitLab...