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changed_lines

testing_conventions::patch_coverage

Function changed_lines 

Source 
pub fn changed_lines(
    repo: &Path,
    base: &str,
) -> Result<BTreeMap<String, BTreeSet<u64>>>
Expand description

The new-side lines each file gained in repo’s <base>...HEAD diff, keyed by repo-relative path. The diff machinery shared by the TS / Rust twins.

<base>...HEAD is the merge-base diff — the changes this branch introduced (what a PR shows). --unified=0 drops context lines so every + line is a real addition; --no-renames keeps a rename a delete + an add (the added side is held to coverage); --relative reports paths relative to repo. Returns an error if git diff fails (e.g. base names no resolvable ref).