yash-cli-0.2.0

[0.2.0] - 2024-12-14

Added

• A case branch now can be terminated with ;& or ;| instead of ;; to fall
  through to the next branch or to resume pattern matching from the next branch,
  respectively. ;& is a POSIX.1-2024 feature, and ;| is an extension. For
  compatibility with other shells, ;;& is also accepted as an alias for ;|.
• Dollar-single-quotes are now supported as a form of quoting where backslash
  escapes are recognized.
  • Currently, octal and hexadecimal escapes that expand to a value greater
    than 127 are translated to a UTF-8 sequence for the corresponding Unicode
    scalar value. This behavior does not conform to POSIX.1-2024 and is
    subject to change.
  • As an extension to POSIX.1-2024, the shell also recognizes the \u and
    \U escapes for Unicode scalar values, and the \E escape as a synonym
    for \e.

Changed

• The shell's syntax now allows esac as the first pattern of a case branch
  as in case esac in (esac|case) echo ok; esac. Previously, it was a syntax
  error, but POSIX.1-2024 allows it.
• The bg built-in now updates the ! special parameter to the process ID of
  the background job, as required by POSIX.1-2024.
• The exec built-in no longer exits the shell when the specified command is
  not found in an interactive shell, as required by POSIX.1-2024.

Fixed

• The interactive shell now discards the entire line when a syntax error occurs
  in the middle of a command line. Previously, it would continue parsing the
  rest of the line, which could lead to confusing behavior.