diff options
Diffstat (limited to 'src/ser.rs')
| -rw-r--r-- | src/ser.rs | 7 |
1 files changed, 4 insertions, 3 deletions
@@ -569,8 +569,9 @@ impl<'a> Serializer<'a> { match ch { '\t' => {} '\n' => ty = Type::NewlineTripple, - // note that the following are invalid: \b \f \r - c if c < '\u{1f}' => can_be_pretty = false, // Invalid control character + // Escape codes are needed if any ascii control + // characters are present, including \b \f \r. + c if c <= '\u{1f}' || c == '\u{7f}' => can_be_pretty = false, _ => {} } out.push(ch); @@ -646,7 +647,7 @@ impl<'a> Serializer<'a> { '\u{d}' => self.dst.push_str("\\r"), '\u{22}' => self.dst.push_str("\\\""), '\u{5c}' => self.dst.push_str("\\\\"), - c if c < '\u{1f}' => { + c if c <= '\u{1f}' || c == '\u{7f}' => { write!(self.dst, "\\u{:04X}", ch as u32).map_err(ser::Error::custom)?; } ch => self.dst.push(ch), |