Add --keep-process-alive#232

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vagoston wants to merge 3 commits intoruby-debug:masterfrom

vagoston:master

Commits on Sep 25, 2020

DEBUGGER_KEEP_PROCESS_ALIVE
TSMMark
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Commits on Jun 25, 2022

Merge pull request #1 from Vydia/DEBUGGER_KEEP_PROCESS_ALIVE
vagoston
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Commits on Jul 10, 2022

Improve --keep-process-alive
vagoston
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