Fix XML indentation in Emacs mode The return value of MATCH-STRING is a string. At least on Emacs 25, the comparisons between string and character with EQUAL could never succeed, and so the cases for matching braces were never triggered. GET-TEXT-PROPERTY may return a list rather than an atom (for example, on long lines with whitespace-mode turned on), and this broke the heuristic of looking for the tag face in previous text.

fun api_1 (pb:postBody) (nm:string) : transaction page =
  return <xml>Processing the request</xml>

fun api (pb:postBody) (v:int) (nm:string) : transaction page =
  case v of
      1 => api_1 pb nm
    | _ => error <xml>Version {[v]} is not supported</xml>