Function unquoteIfQuoted

src/patch/parse.ts:340–348

* If `s` starts with a double quote, unquotes it using C-style escape * rules (as used by Git). Otherwise returns `s` as-is.

(s: string)

   * rules (as used by Git). Otherwise returns `s` as-is.
   */
  function unquoteIfQuoted(s: string): string {
    if (s.startsWith('"')) {
      const parsed = parseQuotedFileName(s);
      if (parsed) {
        return parsed.fileName;
      }
    }
    return s;
  }

  /**
   * Parses a C-style quoted filename as used by Git or GNU `diff -u`.