Split a character string based on change of character

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Split a (character) string into comma (plus a blank) delimited strings based on a change of character (left to right). Blanks should be treated as any other character (except they are problematic to display clearly). The same applies to commas. For instance, the string:

"gHHH5YY++///\\"

should be split as:

["g", "HHH", "5", "YY", "++", "///", "\\" ];