Issue #13721 has been reported by normalperson (Eric Wong).

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Feature #13721: [PATCH] net/imap: dedupe attr keys in Net::IMAP::FetchData
https://bugs.ruby-lang.org/issues/13721

* Author: normalperson (Eric Wong)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
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Since attr hash keys are frequently reused, it makes sense to
deduplicate them up front.

This saves one allocation per-attr, per-message.  When running
imap.fetch(1..-1, 'UID') on a mailbox with 30000 messages;
this saves 30000 allocations.

This relies on the String#-@ change in [Feature #13077]

* net/imap: use frozen, deduplicated string in attr name (key)


Trivial (1-byte change :), I may commit in a few days if no response.


---Files--------------------------------
0001-net-imap-dedupe-attr-keys-in-Net-IMAP-FetchData.patch (1 KB)


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