Function getGitDiffStats

src/adapters/scripts/evolver-session-end.js:47–73

()

}

function getGitDiffStats() {
  // Use the host-provided workspace root, not process.cwd(): Cursor runs some
  // hook events with cwd set to the plugin dir, where `git diff` finds nothing.
  const cwd = resolveProjectDir();
  // Distinguish "git failed (no HEAD~1, etc.)" from "git succeeded with
  // empty output (e.g. empty merge)". The previous `||` chain treated
  // both as falsy and fell through to the working-tree diff, which can
  // surface unrelated unstaged changes as the session outcome.
  const statHead1 = runGit(['diff', '--stat', 'HEAD~1'], cwd);
  const stat = statHead1.ok ? statHead1.out : runGit(['diff', '--stat'], cwd).out;
  const diffHead1 = runGit(['diff', '--no-color', 'HEAD~1'], cwd);
  const diffContent = diffHead1.ok ? diffHead1.out : runGit(['diff', '--no-color'], cwd).out;
  const filesChanged = (stat.match(/\d+ files? changed/) || ['0'])[0];
  const insertions = (stat.match(/(\d+) insertions?/) || [null, '0'])[1];
  const deletions = (stat.match(/(\d+) deletions?/) || [null, '0'])[1];
  // Distinguish "no git repo here" from "repo with no changes" purely for the
  // skip-log message — the diff commands above can't tell the two apart (both
  // yield empty output). A single cheap rev-parse settles it.
  const isRepo = runGit(['rev-parse', '--is-inside-work-tree'], cwd).out === 'true';
  return {
    stat,
    summary: `${filesChanged}, +${insertions}/-${deletions}`,
    diffSnippet: diffContent.slice(0, 2000),
    hasChanges: stat.length > 0,
    isRepo,
  };
}

// Detect whether the hook is running inside Cursor.
//