--ignore-case option does not ignore pathname case?

[John Pierman]

tested with 3.07 and 3.1 with --ignore-case patch applied

cd /tmp
mkdir -p a/b/c/d/e/f
mkdir -p A/b/C/D/e/F
add some files to a/b/c/d/e/f/
rsync -r --ignore-case a/ A/
>> creates b/c/d/e/f/<files>

Why is it not ignoring case?  I expect it to add all files in 'f' to 'F'
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