Re: BUG #18735: Specific multibyte character in psql file path command parameter for Windows

> I don't believe the theory that the fault lies there.  If the flex
> rules were taking the backslash-embedded-in-a-shift-JIS-character
> as a backslash, they would think it is the start of a new backslash
> command, with the result being that the filename argument gets
> truncated there.  That doesn't match the reported symptoms: we
> see more of the filename than that echoed back in the error message.
> So I think the filename is getting through that part just fine,
> and then we're messing it up in canonicalize_path or adjacent
> processing.

I have looked into canonicalize_path() and found this:

#ifdef WIN32

    /*
     * The Windows command processor will accept suitably quoted paths with
     * forward slashes, but barfs badly with mixed forward and back slashes.
     */
    for (p = path; *p; p++)
    {
        if (*p == '\\')
            *p = '/';
    }

Here "path" is the filename encoded in Shift-JIS I think.  It seems
canonicalize_path() unconditionaly replaces a backslash with a slash.
For me this seems to break any Shift-JIS KANJI characters that a
backslash in the second byte.

Best reagards,
--
Tatsuo Ishii
SRA OSS K.K.
English: http://www.sraoss.co.jp/index_en/
Japanese:http://www.sraoss.co.jp