Re: pg_regress breaks on msys

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Andrew Dunstan <andrew(at)dunslane(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pg_regress breaks on msys
Date: 2006-07-19 18:24:29
Message-ID: 200607191824.k6JIOTA05904@momjian.us
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Tom Lane wrote:
> Bruce Momjian <bruce(at)momjian(dot)us> writes:
> > * From http://www.computerhope.com/cmd.htm:
> > *
> > * 1. If all of the following conditions are met, then quote characters
> > * on the command line are preserved:
> > *
> > * - no /S switch
> > * - exactly two quote characters
> > * - no special characters between the two quote characters, where special
> > * is one of: &<>()@^|
> > * - there are one or more whitespace characters between the the two quote
> > * characters
> > * - the string between the two quote characters is the name of an
> > * executable file.
>
> Hmm, that suggests that our code works *only* if there's white space in
> all the paths !? Seems unlikely that this description is fully correct,
> or we'd have had problems before.

It is saying _all_ these have to be true, and we already quote
executables, and the string, so we always have more than two quotes:

* Win32 needs double quotes at the beginning and end of system()
* strings. If not, it gets confused with multiple quoted strings.
* It also requires double-quotes around the executable name and
* any files used for redirection. Other args can use single-quotes.

--
Bruce Momjian bruce(at)momjian(dot)us
EnterpriseDB http://www.enterprisedb.com

+ If your life is a hard drive, Christ can be your backup. +

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