pub fn since_against_ref(
vcs: &dyn VcsProvider,
reference: &str,
db: &dyn DiffStore,
impact_depth: i64,
supported_ext: &[&str],
lang: &dyn LanguageRegistry,
) -> Result<SinceResult, DiffError>Expand description
Show structural changes (added/removed/modified symbols) since a git reference.
Expects the caller to have run a scan first to ensure the DB matches the current working tree. Parses old file content from git history and compares against current DB symbols.