Function looksLikeGitForWindowsBash

src/node/utils/main/bashPath.ts:51–84

* Ensure the bash we found appears to come from a Git for Windows install. * * (We avoid launching WSL shells via `C:\\Windows\\System32\\bash.exe`.)

(bashPath: string, existsSyncFn: ExistsSyncFn)

 * (We avoid launching WSL shells via `C:\\Windows\\System32\\bash.exe`.)
 */
function looksLikeGitForWindowsBash(bashPath: string, existsSyncFn: ExistsSyncFn): boolean {
  if (isWslLauncherPath(bashPath)) {
    return false;
  }

  const normalized = WIN_PATH.normalize(bashPath);
  const lower = normalized.toLowerCase();

  if (lower.endsWith("\\usr\\bin\\bash.exe")) {
    const root = WIN_PATH.dirname(WIN_PATH.dirname(WIN_PATH.dirname(normalized)));
    return existsSyncFn(WIN_PATH.join(root, "cmd", "git.exe"));
  }

  if (lower.endsWith("\\bin\\bash.exe")) {
    const root = WIN_PATH.dirname(WIN_PATH.dirname(normalized));
    return existsSyncFn(WIN_PATH.join(root, "cmd", "git.exe"));
  }

  // Best-effort: walk up a few levels looking for `cmd/git.exe`.
  let dir = WIN_PATH.dirname(normalized);
  for (let i = 0; i < 4; i++) {
    if (existsSyncFn(WIN_PATH.join(dir, "cmd", "git.exe"))) {
      return true;
    }

    const parent = WIN_PATH.dirname(dir);
    if (parent === dir) {
      break;
    }
    dir = parent;
  }

  return false;
}

function findGitRootFromGitExePath(gitExePath: string, existsSyncFn: ExistsSyncFn): string | null {
  let dir = WIN_PATH.dirname(WIN_PATH.dirname(WIN_PATH.normalize(gitExePath)));