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.

val r = {A = 1, B = "Hi", C = 0.0}
val rA = r -- #A
val rB = r --- [A = _, C = _]

fun main () : transaction page = return <xml>
        {cdata rA.B}, {cdata rB.B}
</xml>