Files
hermes-agent/tests
teknium1 7fb5d2bc39 fix(process): decode background process output with incremental UTF-8 decoders
Port from openclaw/openclaw#112325: multibyte UTF-8 characters split
across a 4096-byte pipe or PTY read boundary were decoded statelessly
per chunk with errors='replace', corrupting both halves into U+FFFD
mojibake in background process output (poll/log/wait/completion
notifications). The foreground path already used an incremental decoder
(tools/environments/base.py::_wait_for_process); this applies the same
treatment to the background reader loops:

- _reader_loop (select and blocking paths): one
  codecs.getincrementaldecoder('utf-8') per reader holds partial
  sequences across chunks; the finally block flushes a truncated tail
  as a single U+FFFD instead of dropping it.
- _pty_reader_loop: same treatment for ptyprocess byte chunks
  (pywinpty str chunks pass through unchanged).

Genuinely invalid bytes keep errors='replace' behavior.
2026-07-31 21:21:13 -07:00
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