diff options
Diffstat (limited to 'absl/strings/substitute.h')
| -rw-r--r-- | absl/strings/substitute.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/absl/strings/substitute.h b/absl/strings/substitute.h index 766aca42b313..4d0984d3d1fc 100644 --- a/absl/strings/substitute.h +++ b/absl/strings/substitute.h @@ -190,7 +190,12 @@ void SubstituteAndAppendArray(std::string* output, absl::string_view format, #if defined(ABSL_BAD_CALL_IF) constexpr int CalculateOneBit(const char* format) { - return (*format < '0' || *format > '9') ? 0 : (1 << (*format - '0')); + // Returns: + // * 2^N for '$N' when N is in [0-9] + // * 0 for correct '$' escaping: '$$'. + // * -1 otherwise. + return (*format < '0' || *format > '9') ? (*format == '$' ? 0 : -1) + : (1 << (*format - '0')); } constexpr const char* SkipNumber(const char* format) { |