Re: about EDITOR_LINENUMBER_SWITCH

On Thu, Oct 13, 2011 at 11:31 AM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> Alvaro Herrera wrote:
>> Excerpts from Tom Lane's message of mié may 25 16:07:55 -0400 2011:
>> > Alvaro Herrera <alvherre(at)commandprompt(dot)com> writes:
>> > > Excerpts from Tom Lane's message of mar may 24 17:11:17 -0400 2011:
>> > >> Right.  It would also increase the cognitive load on the user to have
>> > >> to remember the command-line go-to-line-number switch for his editor.
>> > >> So I don't particularly want to redesign this feature.  However, I can
>> > >> see the possible value of letting EDITOR_LINENUMBER_SWITCH be set from
>> > >> the same place that you set EDITOR, which would suggest that we allow
>> > >> the value to come from an environment variable.  I'm not sure whether
>> > >> there is merit in allowing both that source and ~/.psqlrc, though
>> > >> possibly for Windows users it might be easier if ~/.psqlrc worked.
>> >
>> > > If we're going to increase the number of options in .psqlrc that do not
>> > > work with older psql versions, can I please have .psqlrc-MAJORVERSION or
>> > > some such?  Having 8.3's psql complain all the time because it doesn't
>> > > understand "linestyle" is annoying.
>> >
>> > 1. I thought we already did have that.
>>
>> Oh, true, we have that, though it's not very usable because you have to
>> rename the file from .psqlrc-9.0.3 to .psqlrc-9.0.4 when you upgrade,
>> which is kinda silly.
>
> True.  We don't add configuration changes in minor versions so having
> minor-version granularity makes no sense.
>
> The attached patch changes this to use the _major_ version number for
> psql rc files.  Does this have to be backward-compatible?  Should I
> check for minor and major matches?  That is going to be confusing to
> document.

Checking for a minor match and then a major match seems sensible.

--
Robert Haas
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