Re: vpath builds and verbose error messages

Excerpts from Peter Eisentraut's message of vie nov 18 01:34:18 -0300 2011:
> When using verbose error messages (psql \set VERBOSITY verbose) with a
> vpath build, you get this sort of thing:
>
> ERROR: 42703: column "foo" does not exist
> LINE 1: select foo;
> ^
> LOCATION: transformColumnRef, /build/buildd-postgresql-9.1_9.1.1-3-i386-AP0ovQ/postgresql-9.1-9.1.1/build/../src/backend/parser/parse_expr.c:766
>
> Can we shorten that path somehow? Either in the C code when printing it
> out, or during the build. Any ideas?

Huh, I hadn't noticed, even though I see those all the time. I agree
with shortening the path so that it's relative to the root source dir,
if that's what you propose:

LOCATION: transformColumnRef, src/backend/parser/parse_expr.c:766

If it can be done at build time that would be best, because we wouldn't
be carrying thousands of useless copies of the source path ... I have
no suggestions on how to do this, however.

--
Álvaro Herrera <alvherre(at)commandprompt(dot)com>
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