Qalc interprets 1,000 as a vector

[Jonathan Ryshpan]

I've been very happy with the desk calculator Qalc, except for one
thing.  If you enter a comma separated number, say 1,000 (easy to do if
you paste it in from a financial web site), qalc interprets it as a
vector.  Is there any way to suppress this?  The documentation indicates
that it should be possible by setting the locale correctly, but I
haven't been able to get it to work.  

Here's the situation:

My locale
        $ locale
        LANG=en_US.UTF-8
        LC_CTYPE="en_US.UTF-8"
        LC_NUMERIC="en_US.UTF-8"
        LC_TIME="en_US.UTF-8"
        LC_COLLATE=POSIX
        LC_MONETARY="en_US.UTF-8"
        LC_MESSAGES="en_US.UTF-8"
        LC_PAPER="en_US.UTF-8"
        LC_NAME="en_US.UTF-8"
        LC_ADDRESS="en_US.UTF-8"
        LC_TELEPHONE="en_US.UTF-8"
        LC_MEASUREMENT="en_US.UTF-8"
        LC_IDENTIFICATION="en_US.UTF-8"
        LC_ALL=

A short session using the command line interface to qalc (empty lines
edited out for brevity):
$ qalc
> 1,234
  [1, 234] = [1, 234]
> $1,234
  [dollar * 1, 234] = [$1, 234]
> 1,1
  [1, 1] = [1, 1]
> 2,3
  [2, 3] = [2, 3]
> +
  [1, 1] + [2, 3] = [3, 4]
> quit

Qalculate! 0.9.7 (Using KDE 3.5.10-38-fc17 Fedora)
Running on x86_64 hardware