Nobuyoshi Nakada

`JRuby --help` fails if PAGER has an option

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**Environment Information** Provide at least: * JRuby version (`jruby -v`) and command line (flags, JRUBY_OPTS, etc) ``` jruby 10.0.2.0 (3.4.2) 2025-08-07 cba6031bd0 OpenJDK 64-Bit Server VM 26-ea+17-Ubuntu-1 on 26-ea+17-Ubuntu-1 +indy...

## What was the end-user or developer problem that led to this PR? Tests should not pollute the source directory by temporary files. ## What is your fix for the...

[Bug #21669] Thoroughly implement void value expression check

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[[Bug #21669]](https://bugs.ruby-lang.org/issues/21669)

After `make check`, a file "quiet" remains.

[Misc #21768] Remove deprecated functions

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[[Misc #21768]](https://bugs.ruby-lang.org/issues/21768)

[DOC] Reword "Pattern Matching" to "Regular Expression"

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In ruby, since 3.1 at least, the words "Pattern Matching" should refer the syntax. Fix https://github.com/ruby/ruby/commit/e50b7bf784b53ac126986dd7f9fd22ccc9b59c60#r172038634

Core data type

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* Typed data check for core data types * Fix wrong declaration of `rb_optimized_call` Fix up https://github.com/ruby/ruby/pull/6691.

May be a workaround of the failure on Amazon Linux.

Ruby is 4.0 now. From the example for an unpackaged Win32 app: https://learn.microsoft.com/en-us/windows/apps/design/globalizing/use-utf8-code-page

[Bug #20409] Make `break` in `END` a syntax error

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[[Bug #20409]](https://bugs.ruby-lang.org/issues/20409)