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.

type t

val create : string -> t
val out : t -> string
val frob : t -> string -> t
val print : transaction unit

val foo : transaction unit
val bar : string -> transaction unit

val transactional : transaction unit