Yet Another Shell

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Yet another shell, version 2.53.

This is a maintenance release.

Yash 2.53 (2022-08-23)

• Changed: The shell now deterministically rejects arithmetic expansions that result in undefined behavior.
• Fixed: A non-interactive yash now exits on an assignment error in a for loop.
• Fixed a bug where command substitutions contained in the regular expression inside the "[[ word =~ regex ]]" syntax were not parsed correctly.
• Fixed a bug where unclosed quotes in an end-of-here-document indicator were causing the shell to crash or misbehave.
• Fixed a bug where yash crashes when invoked with no argv.