Whateer you think, the SPACE+diacritic is still a hack, and certainly not a canonical equivalent (including for its properties), of the existing spacing diacritics, which also do not fit all usages because they are symbols.
It is the formally specified way to represent what you say you want to represent. If an implementation doesn't do that nicely enough, complain to the implementors. (This has already been suggested to you.)
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Michael Everson * * Everson Typography * * http://www.evertype.com
