message: Don't use std::mismatch. Unit tests crash on Windows.
diff: @@ -504,15 +504,37 @@ std::vector<Project::Entry> LoadCompilationEntriesFromDirectory(
  // Computes a score based on how well |a| and |b| match. This is used for
  // argument guessing.
  int ComputeGuessScore(const std::string& a, const std::string& b) {
  - // Increase score based on common prefix and suffix. Prefixes are prioritized.
  - size_t i = std::mismatch(a.begin(), a.end(), b.begin()).first - a.begin();
  - size_t j = std::mismatch(a.rbegin(), a.rend(), b.rbegin()).first - a.rbegin();
  - int score = 10 * i + j;
  + const int kMatchPrefixWeight = 100;
  + const int kMismatchDirectoryWeight = 100;
  + const int kMatchPostfixWeight = 1;
  +
  + int score = 0;
  + size_t i = 0;
  +
  + // Increase score based on matching prefix.
  + for (i = 0; i < a.size() && i < b.size(); ++i) {
  + if (a[i] != b[i])
  + break;
  + score += kMatchPrefixWeight;
  + }
  // Reduce score based on mismatched directory distance.
  - if (i + j < std::min(a.size(), b.size()))
  - score -= 100 * (std::count(a.begin() + i, a.end() - j, '/') +
  - std::count(b.begin() + i, b.end() - j, '/'));
  + for (size_t j = i; j < a.size(); ++j) {
  + if (a[j] == '/')
  + score -= kMismatchDirectoryWeight;
  + }
  + for (size_t j = i; j < b.size(); ++j) {
  + if (b[j] == '/')
  + score -= kMismatchDirectoryWeight;
  + }
  +
  + // Increase score based on common ending. Don't increase as much as matching
  + // prefix or directory distance.
  + for (size_t offset = 1; offset <= a.size() && offset <= b.size(); ++offset) {
  + if (a[a.size() - offset] != b[b.size() - offset])
  + break;
  + score += kMatchPostfixWeight;
  + }
  return score;
  }
  