Inconsistent Whitespace handling in XQuery?

I'm confused about how to get XQuery to handle whitespace like I want it to. Say I have to following XML:


<body>
to<lb/>
<choice norm="Miss">Mi<glyph ref="#sm-long-s>s</glyph>s</choice>
<name type="person"><forename>Margaret</forename> <surname>Hamilton</surname></name><lb />
<name type="place">S<hi rend="superscript">t</hi> James's</name>
</body>

If I use this code


for $body in /body
return replace(string-join(
    for $t in $body//node()
    return
        typeswitch($t)
        case text() return
            if (
                sum(
                    for $a in $t/ancestor::*
                    return
                        typeswitch($a)
                        case element(choice) return 1
                        default return 0
                )=0
            ) then $t
            else null
        case element(lb) return ' '
        case element(choice) return $t/@norm
        default return null
),"\s+"," ")

I get the following output:


to MissMargaretHamilton St James's

rather than the expected


to Miss Margaret Hamilton St James's

Is there a way to fix that?

_{PS: There is no such thing as <forename> in the actual code, but I introduced it in this example to showcase both the linebreak and the space between > and < being ignored.}

Inconsistent Whitespace handling in XQuery?

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