Re: BUG #15705: psql autocompletion is not always correct with latest libedit

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: apyhalov(at)gmail(dot)com
Cc: pgsql-bugs(at)lists(dot)postgresql(dot)org
Subject: Re: BUG #15705: psql autocompletion is not always correct with latest libedit
Date: 2019-03-19 21:30:30
Message-ID: 31241.1553031030@sss.pgh.pa.us
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PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
> After updating libedit from 20170329-3.1 to 20181209-3.1 we see the
> following issue in psql:
> while typing "create user test encr<TAB>" I see:
>> create user test encrypted\ password
> (note \ before space)
> The issue seems to be in
> https://github.com/NetBSD/src/commit/47081400d868e1d6dd5629bea97c599c48404839
> - now libedit treats input as file names and escapes it accordingly.

I think you need to complain to the libedit authors, not us.
While I can't find any API spec anywhere for libedit's completion
functionality, it seems to be meant to match GNU readline,
and the GNU docs are pretty clear that the results of
rl_attempted_completion_function should be taken literally.
I think they injected the extra quoting at the wrong level ...

regards, tom lane

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