concatenate-rich-text

Arguments: &rest rich-text-strings

Concatenates an arbitrary number of rich-text strings into a single rich-text string.

Note that simple concatenation (such as with concatenate) does not work with rich-text strings because each string has a header that defines fonts and so on, and also because a later string could inherit formatting from the end of the previous string. This function merges the headers and current formatting of the multiple strings as needed. If all of the arguments are either the null string or nil, then nil is returned.

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Created 2015.5.21.