On 04/06/2017 06:31 PM, Andres Freund wrote:
> Hi,
> I personally, and I know of a bunch of other regular contributors, find
> context diffs very hard to read.  Besides general dislike, for things
> like regression test output context diffs are just not well suited.
> E.g. in
> https://buildfarm.postgresql.org/cgi-bin/show_stage_log.pl?nm=prairiedog&dt=2017-04-06%2021%3A10%3A56&stg=check
> the salient point (ERROR:  50 is outside the valid range for parameter 
> "effective_io_concurrency" (0 .. 0))
> is 130 lines into the diff, whereas it's right at the start in a unified diff.
> Issues with one error that causes a lot of followup output changes are
> really common in our regression suite.
> I personally have PG_REGRESS_DIFF_OPTS set to -dU10, but that doesn't
> help much analyzing buildfarm output.
> Therefore I propose changing the defaults in pg_regress.c.




Andrew Dunstan                https://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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