String matching with variable interpolation

New to Julia
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In general you should not use Regex to handle HTML (XML) since Regex cannot parse HTML.

for this specif use:

julia> field = "out"
"out"

julia> rg = "<$field>\\s*(.*?)\\s*</$field>"
"<out>\\s*(.*?)\\s*</out>"

julia> match(Regex(rg), "<out>hello</out>")
RegexMatch("<out>hello</out>", 1="hello")
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