[tor-bugs] #22342 [Core Tor/Tor]: Add a nice append-only stringbuffer, and refactor code to use it

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#22342: Add a nice append-only stringbuffer, and refactor code to use it
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 Reporter:  nickm         |          Owner:  nickm
     Type:  defect        |         Status:  needs_review
 Priority:  Medium        |      Milestone:  Tor: 0.3.3.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
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Changes (by nickm):

 * status:  accepted => needs_review
 * milestone:  Tor: 0.3.2.x-final => Tor: 0.3.3.x-final


Comment:

 My branch `buf_for_stringbuilder` here outlines what I'd like to do for
 this kind of code in the future, and replaces a couple of old janky
 functions to use this new interface.

 I think we shouldn't look at it till 0.3.3.  Maybe it isn't even a good
 idea.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22342#comment:4>
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