sort -t: -k1 behaves strangely

[John Cowan]

Given the input (without the leading spaces)

        Test Case:#1
        Test:#2

the command "LC_ALL=C sort -t: -k1" outputs the same, though the
key "Test" should sort before "Test Case".  The bug exists in
coreutils 6.7, does not exist in 5.97 or 5.2.1, and exists in
textutils 1.14.  It also exists in Solaris 9's sort.  Is this
a regression, or was sort fixed to match the SVR4 behavior?

-- 
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