---
-
  name: whitespace-omission
  tag: "!*"
  match: "not(self::m:math) and not($MatchingWhitespace) and (@data-previous-space-width >= 0.25 or @data-following-space-width >= 0.25)"
  replace:
   - with:
      variables: [MatchingWhitespace: "true()"]
      replace:
      - test:
        - if: "(@class='MathML-unit' or BaseNode(.)[@class='MathML-unit']) and @data-previous-space-width >= 0.25"  # BANA 5.3(a)
          then: [t: "𝐖"]
        - else_if: "@data-previous-space-width > 1.1"
          then: [t: "⠬"]
        - else_if: "@data-previous-space-width >= 0.25"      # thickspace
          then: [t: "W"]
      - x: "."
      - test:
        - if: "(@class='MathML-unit' or BaseNode(.)[@class='MathML-unit']) and @data-following-space-width >= 0.25" # BANA 5.3(a)
          then: [t: "𝐖"]
        - else_if: "@data-following-space-width > 1.1"
          then: [t: "⠬"]
        - else_if: "@data-following-space-width >= 0.25"      # thickspace
          then: [t: "W"]

-
   name: omission-intent
   tag: "!*"
   match: "contains(@intent, ':blank')"
   replace: 
   - t: "⠬"

-
   name: unicode-override
   tag: "*"
   match: "@data-unicode"
   replace: 
   - x: "@data-unicode"

-
   name: default
   tag: msqrt
   match: "."
   replace: 
   - t: "1⠩"
   - x: "*"
   - t: "1⠬"

-
   name: default
   tag: mroot
   match: "."
   replace: 
   - t: "1⠩1⠔"
   - test:
      if:   # FIX: need to add arbitrary shapes here (see also msub/msup)
      - "*[2][(self::m:mn and not(@data-roman-numeral) ) or"
              # next test is to make sure there is just one symbol
      - "     ((self::m:mi or self::m:mo) and string-length(text())=1) or"
      - "     self::m:mfrac or self::m:msqrt or self::m:mroot or"
      - "     IsBracketed(., '(', ')') or IsBracketed(., '[', ']') or IsBracketed(., '{', '}') or"
      - "     IsInDefinition(., 'Braille', 'Arrows')"
      - "    ]"
      then:
      - x: "*[2]"
      else:
      - t: "1⠣"
      - x: "*[2]"
      - t: "1⠜"
   - t: "#"    # signal end of script/numeric mode
   - x: "*[1]"
   - t: "1⠬"
        
               
# Fraction rules
   # The fraction part of a mixed number is always simple
   # They also differ because a two character sequence is needed to bracket the fraction
   # The invisible plus should produce an empty string

-
   name: common-fraction-mixed-number
   tag: mfrac
   match:
      - "preceding-sibling::*[1][self::m:mo][.='\u2064'] and" # preceding element is invisible plus
      - "*[1][self::m:mn][not(contains(., '.'))]   and" 
      - "*[2][self::m:mn][not(contains(., '.'))]"
   replace: 
   - t: "#"    # signal end of previous numeric mode
   - x: "*[1]"
   - t: "N⠌"
   - x: "*[2]"

-
   name: simple-number
   tag: mfrac
   match: "*[1][self::m:mn] and *[2][self::m:mn]"
   replace: 
   - t: "#"    # signal end of any previous numeric mode (probably not needed, but...)
   - x: "*[1]"
   - t: "N⠌"
   - x: "*[2]"

-
   name: default
   tag: mfrac
   match: "."
   replace: 
   - t: "1⠷"
   - x: "*[1]"
   - t: "1⠨⠌"
   - x: "*[2]"
   - t: "1⠾"

-
   #GTM 14.3.3 (not sure what else vertical juxtaposition applies to)
   name: binomial-frac
   tag: mrow
   match: "IsBracketed(., '(', ')') and *[2][self::m:mfrac][@linethickness=0]"
   replace: 
   - x: "*[1]"
   - x: "*[2]/*[1]"
   - t: "⠰⠻"
   - x: "*[2]/*[2]"
   - x: "*[3]"

- name: binomial-table
  tag: mrow
  match: "IsBracketed(., '(', ')') and *[2][self::m:mtable][count(*)=2 and count(*[1])=1] and contains(@intent, 'binomial(')"
  replace:
     - x: "*[1]"
     - x: "*[2]/*[1]/*[1]/*[1]"
     - t: "⠰⠻"
     - x: "*[2]/*[2]/*[1]/*[1]"
     - x: "*[3]"

#
# Matrix/Determinant rules
# matrix and determinant are the same other than "matrix"/"determinant" based on the bracketing chars
# we don't do spatial layout, instead the beginning/ending of each row uses the enlarged bracketing chars
-
   name: default-matrix
   tag: mrow
   variables:
      - RowStart: "*[1]"
      - RowEnd: "*[3]"
   match:
      - "*[2][self::m:mtable] and"
      - (IsBracketed(., '(', ')') or IsBracketed(., '[', ']') or IsBracketed(., '|', '|'))
   replace: [x: "*[2]"]
-
   name: default-mtable
   tag: mtable
   match: "."
   replace: [x: "*"]
-
  name: default
  tag: [mtr, mlabeledtr]
  match: "."
  replace:
   - test: 
      if: "../*[2]"   # more than one row
      then: [t: "⠠"]
   - t: ""
   - x: $RowStart
   - test:
      if: .[self::m:mlabeledtr]
      then:
         - t: "⠗⠕⠺W⠇⠁⠃⠑⠇⠸⠒"  # "row label:"
         - x: "*[1]/*"           # contents of row label
   - test:
      if: .[self::m:mlabeledtr]
      then: [x: "*[position()>1]"]
      else: [x: "*"]
   - test: 
      if: "../*[2]"   # more than one row
      then: [t: "⠠"]
   - x: $RowEnd
-
  name: default
  tag: mtd
  match: "."
  replace:
  - test:
      if: "*"
      then:
      - test: 
         if: "preceding-sibling::*"
         then: [t: "W"]
      - x: "*"
      # else nothing to braille

-
   name: no-content
   tag: math
   match: "not(*)"      # empty
   replace: [t: "W"]    # not sure that is right, but this shouldn't happen

-
  name: default
  tag: math
  match: "."
  variables:
  - RowStart: "''"           # empty string -- it needs to be set
  - RowEnd: "''"             # empty string -- it needs to be set
  - NewScriptContext: "''"    # empty string -- it needs to be set
  - MatchingWhitespace: "false()"
  replace: [x: "*"]

-
    name: empty-mrow
    tag: mrow
    match: "not(*)"
    replace: [t: "W"] # not sure what is correct -- if in a fraction, probably something is better than nothing

-
   name: default
   tag: mrow
   match: "."
   replace: [x: "*"]


-
   # operator omission
   name: operator-omission
   tag: mo
   # normally(?) this is an omission, but the case 6'2" causes problems due to WIRIS
   # in that case, it doesn't put the ft/in in a superscript and thinks the space is an operator
   # canonicalization moves them into <msup> with base <mn>, so this shouldn't be an omission for that case
   match: ".='\u00A0' and @data-width > 1.1 and
           not( preceding-sibling::*[1][self::m:msup and *[2][self::m:mo]] and
                following-sibling::*[1][self::m:msup and *[2][self::m:mo]] )"
   replace:
   - t: "⠬"   # empty space for omission

-
  # "∼" can be a prefix *operator* or an infix comparison -- they have different spacing. We catch the prefix version here
  # Note: ASCII "~" has been canonicalized to occur only in a diacritical position
  name: prefix-tilde
  tag: mo
  match: "translate(., '∼', '')='' and not(preceding-sibling::*) and parent::m:mrow"
  replace:
  - x: "text()"

-
   name: default
   tag: mo
     # add spaces around comparison operators unless they are in a script position,
   variables: # ratio not spaced in UEB; also make sure it is an infix operator (e.g., "~" can be prefix)
   - AddSpaces: "$UseSpacesAroundAllOperators or
                       ( parent::*[self::m:mrow] and $NewScriptContext='' and
                         .!='∶' and IsInDefinition(., 'Braille', 'NemethComparisonOperators') )"
   match: "."
   replace:
      - test:
         if: "$AddSpaces"
         then:
            - test:
               if: "preceding-sibling::*"
               then: [t: "W"]
      - x: "text()"
      - test:
         if: "$AddSpaces and following-sibling::*" 
         then: [t: "W"]


-
   name: default
   tag: mn
   match: "."
   replace:
   - x: "BrailleChars(., 'UEB')"
      
-
   name: default
   tag: [mi, mtext]
   match: "."
   replace:
   - x: "BrailleChars(., 'UEB')"

-
   name: default
   tag: mstyle
   match: "."
   replace:
   - test:
      if: "*"
      then: [x: "*"]
      # else do nothing -- no content

-
  name: mhchem-hack
  # this captures the output for the mhchem's "<=>", "<<=>", and "<=>>" output (there are no Unicode arrows for them)
  # this isn't a perfect match, but should be good enough and allows merging all three (see github.com/NSoiffer/MathCAT/issues/60)
  tag: mover
  match:
  -    "*[1][substring(., 1, 1)='↽'] and"
  -    "*[2][substring(., string-length(), 1)='⇀']"
  replace:
  - t: "W"
  - test:
      if: "*[1][self::m:mrow]"
      then_test:
          if: "*[2][self::m:mrow]"
          then: [x: "'🣑'"]    # 0x1f8d1 -- this is currently unassigned and may get used by UTC at some point (<=>)
          else: [x: "'🣓'"]    # 0x1f8d3 -- this is currently unassigned and may get used by UTC at some point (<<=>)
      else: [x: "'🣒'"]        # 0x1f8d2 -- this is currently unassigned and may get used by UTC at some point (<=>>)
  - t: "W"

-
   name: single-char-exceptions    # GTM 12
   tag: [mover, munder]
   match: "*[2][string-length(.) = 1 and ( translate(., '_¯→.·˙~^','')='' or (parent::m:mover and .='⌒') )]"
   replace: 
   - test:
         if: "NeedsToBeGrouped(*[1], 'UEB', true())"
         then:
         - t: "1⠣"
         - x: "*[1]"
         - t: "1⠜"
         else: [x: "*[1]"]
   - test:
      if: "*[2][translate(., '_¯→^', '') = '']"
      then: [t: "1"]
   - test:
      if: "self::m:munder"
      then: [t: "⠠"]
   - test:
      - if: "*[2][.='_' or .='¯']"
        then: [t: "⠱"]
      - else_if: "*[2][.='→']"
        then: [t: "⠘⠱"]
      - else_if: "*[2][.='.' or .='·' or .='˙']"
        then: [t: "⠘⠲"]
      - else_if: "*[2][.='~']"
        then: [t: "⠸⠱"]
      - else_if: "*[2][.='^']"
        then: [t: "⠐⠱ "]
        else: [t: "⠨⠸⠱"]    # arc/⌒

-
  name: single-char-exceptions    # RUEB 3.11 -- ° and various prime/minute/seconds aren't treated as if superscripts
  tag: [msup]
  match: "*[2][translate(., \"'*`ª°²³´¹º‘’“”‟′″‴‵‶‷⁗\",'')='']"
  replace:
  - test:
      if: "NeedsToBeGrouped(*[1], 'UEB', true())"
      then:
      - t: "1⠣"
      - x: "*[1]"
      - t: "1⠜"
      else: [x: "*[1]"]
  - x: "*[2]"


-
   name: default
   tag: [msub, msup, munder, mover]
   match: "."
   variables: [AddSpaces: "(self::m:munder or self::m:mover) and IsInDefinition(BaseNode(*[1]), 'Braille', 'NemethComparisonOperators')"]
   replace:
   - test:
      if: "$AddSpaces"
      then: [t: "W"]
   - test:
         if: "NeedsToBeGrouped(*[1], 'UEB', self::m:msub or self::m:msup)"
         then:
         - t: "1⠣"
         - x: "*[1]"
         - t: "1⠜"
         else: [x: "*[1]"]
   - with:   # this could be tighter and be just around the *[2] part, but this is consistent with msubsup below
      variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string
      replace:
      - test:
         - if: "self::m:msup"
           then: [t: "1⠔"]
         - else_if: "self::m:msub"
           then: [t: "1⠢"]
         - else_if: "self::m:munder"
           then: [t: "⠨⠢"]
           else: [t: "⠨⠔"]  # mover
      - test:
         if: "NeedsToBeGrouped(*[2], 'UEB', false())"
         then:
         - t: "1⠣"
         - x: "*[2]"
         - t: "1⠜"
         else: [x: "*[2]"]
   - t: "#"   # signal end script/numeric mode
   - test:
      if: "$AddSpaces"
      then: [t: "W"]



-
  name: msubsup_default_mmultiscripts_equiv
  tag: [msubsup, munderover] # mmultiscripts with only sub/sup postscript
  match: "count(*)=3"    # catches mmultiscripts equiv
  variables: [AddSpaces: "IsInDefinition(BaseNode(*[1]), 'Braille', 'NemethComparisonOperators')"]
  replace:
  - test:
      if: "$AddSpaces"
      then: [t: "W"]
  - test:
      if: "NeedsToBeGrouped(*[1], 'UEB', self::m:msubsup)"
      then:
      - t: "1⠣"
      - x: "*[1]"
      - t: "1⠜"
      else: [x: "*[1]"]
  - with:
      variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string 
      replace:
      - test:
          if: "self::m:munderover"
          then: [t: "⠨⠢"]
          else: [t: "1⠢"]
      - test:
          if: "NeedsToBeGrouped(*[2], 'UEB', false())"
          then:
          - t: "1⠣"
          - x: "*[2]"
          - t: "1⠜"
          else: [x: "*[2]"]
      - test:
          if: "self::m:munderover"
          then: [t: "⠨⠔"]
          else: [t: "1⠔"]
      - test:
          if: "NeedsToBeGrouped(*[3], 'UEB', false())"
          then:
          - t: "1⠣"
          - x: "*[3]"
          - t: "1⠜"
          else: [x: "*[3]"]
      - t: "#"   # signal end script/numeric mode
  - test:
      if: "$AddSpaces"
      then: [t: "W"]

-
   name: default
   tag: mmultiscripts
   match: "."
   variables:
   # computing the number of postscripts is messy because of <mprescripts> being optionally present -- we use "mod" to get the count right
   - Prescripts: "m:mprescripts/following-sibling::*"
   - NumChildren: "count(*)"       # need to stash this since the count is wrong inside '*[...]' below
   - Postscripts: "*[position()>1 and position() < (last() + ($NumChildren mod 2) -count($Prescripts))]"
   replace:
   - test:
      if: "$Prescripts"
      then:
      - test:
         if: "not($Prescripts[1][self::m:none])"
         then:
         - with:
            variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string
            replace:
            - t: "1⠢"
            - test:
                if: "NeedsToBeGrouped($Prescripts[1], 'UEB', true())"
                then:
                - t: "1⠣"
                - x: "$Prescripts[1]"
                - t: "1⠜"
                else: [x: "$Prescripts[1]"]
      - test:
         if: "not($Prescripts[2][self::m:none])"
         then:
         - with:
            variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string
            replace:
            - t: "1⠔"
            - test:
                if: "NeedsToBeGrouped($Prescripts[2], 'UEB', false())"
                then:
                - t: "1⠣"
                - x: "$Prescripts[2]"
                - t: "1⠜"
                else: [x: "$Prescripts[2]"]
      - test:
         if: "count($Prescripts)>2"
         then:
         - test:
            if: "not($Prescripts[3][self::m:none])"
            then:
            - with:
               variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string
               replace:
               - t: "1⠢"
               - test:
                  if: "NeedsToBeGrouped($Prescripts[3], 'UEB', false())"
                  then:
                  - t: "1⠣"
                  - x: "$Prescripts[3]"
                  - t: "1⠜"
                  else: [x: "$Prescripts[3]"]
         - test:
            if: "not($Prescripts[4][self::m:none])"
            then:
            - with:
               variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string
               replace:
               - t: "1⠔"
               - test:
                  if: "NeedsToBeGrouped($Prescripts[4], 'UEB', false())"
                  then:
                  - t: "1⠣"
                  - x: "$Prescripts[4]"
                  - t: "1⠜"
                  else: [x: "$Prescripts[4]"]
         - test:
            if: "count($Prescripts) > 4"   # give up and just dump them out so at least the content is there
            then: [x: "$Prescripts[position() > 4]"]

   - x: "*[1]"
   - test:
      if: "$Postscripts"
      then:
      - test:
         if: "not($Postscripts[1][self::m:none])"
         then:
         - with:
            variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string
            replace:
            - t: "1⠢"
            - test:
                if: "NeedsToBeGrouped($Postscripts[1], 'UEB', false())"
                then:
                - t: "1⠣"
                - x: "$Postscripts[1]"
                - t: "1⠜"
                else: [x: "$Postscripts[1]"]
      - test:
         if: "not($Postscripts[2][self::m:none])"
         then:
         - with:
            variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string
            replace:
            - t: "1⠔"
            - test:
                if: "NeedsToBeGrouped($Postscripts[2], 'UEB', false())"
                then:
                - t: "1⠣"
                - x: "$Postscripts[2]"
                - t: "1⠜"
                else: [x: "$Postscripts[2]"]
      - test:
         if: "count($Postscripts)>2"
         then:
         - test:
            if: "not($Postscripts[3][self::m:none])"
            then:
            - with:
               variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string
               replace:
               - t: "1⠢"
               - test:
                  if: "NeedsToBeGrouped($Postscripts[3], 'UEB', false())"
                  then:
                  - t: "1⠣"
                  - x: "$Postscripts[3]"
                  - t: "1⠜"
                  else: [x: "$Postscripts[3]"]
         - test:
            if: "not($Postscripts[4][self::m:none])"
            then:
            - with:
               variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string
               replace:
               - t: "1⠔"
               - test:
                  if: "NeedsToBeGrouped($Postscripts[4], 'UEB', false())"
                  then:
                  - t: "1⠣"
                  - x: "$Postscripts[4]"
                  - t: "1⠜"
                  else: [x: "$Postscripts[4]"]
         - test:
            if: "count($Postscripts)>4"
            then:
            - test:
               if: "not($Postscripts[5][self::m:none])"
               then:
               - with:
                  variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string
                  replace:
                  - t: "1⠢"
                  - test:
                      if: "NeedsToBeGrouped($Postscripts[5], 'UEB', false())"
                      then:
                      - t: "1⠣"
                      - x: "$Postscripts[5]"
                      - t: "1⠜"
                      else: [x: "$Postscripts[5]"]
            - test:
               if: "not($Postscripts[6][self::m:none])"
               then:
               - with:
                  variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string
                  replace:
                  - t: "1⠔"
                  - test:
                      if: "NeedsToBeGrouped($Postscripts[6], 'UEB', false())"
                      then:
                      - t: "1⠣"
                      - x: "$Postscripts[6]"
                      - t: "1⠜"
                      else: [x: "$Postscripts[6]"]
            - test:
               if: "count($Postscripts)>6"
               then:
               - test:
                  if: "not($Postscripts[7][self::m:none])"
                  then:
                  - with:
                     variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string
                     replace:
                     - t: "1⠢"
                     - test:
                        if: "NeedsToBeGrouped($Postscripts[7], 'UEB', false())"
                        then:
                        - t: "1⠣"
                        - x: "$Postscripts[7]"
                        - t: "1⠜"
                        else: [x: "$Postscripts[7]"]
               - test:
                  if: "not($Postscripts[8][self::m:none])"
                  then:
                  - with:
                     variables: [NewScriptContext: "in"]   # value doesn't matter -- just can't be empty string
                     replace:
                     - t: "1⠔"
                     - test:
                        if: "NeedsToBeGrouped($Postscripts[8], 'UEB', false())"
                        then:
                        - t: "1⠣"
                        - x: "$Postscripts[8]"
                        - t: "1⠜"
                        else: [x: "$Postscripts[8]"]
               - test:
                  if: "count($Postscripts) > 8"   # give up and just dump them out so at least the content is there
                  then:
                  - x: "$Postscripts[position() > 8]"
   - t: "#"   # signal end script/numeric mode
                  

-
  # Note: @notation can contain more than one value
  # I don't think UEB has a good way to represent all notations, especially when in combination
  # Note:
  #   Shape indicator: ⠫
  #   Physical enclosure: ⠪  (think plus inside of a circle)
  #   Superposition indicator: ⠯  (think contour integral)
  #   Cancellation: ⠈⠱ (line through previous char -- will use for horizontal, vertical, diagonal lines)
  #   Line over/under: use GTM 12 bar rule (over ⠱, under ⠠⠱)
  #   Horizontal juxtaposition indicator: ⠿
  #   Vertical juxtaposition indicator: ⠻ (think ≗)
  #   Termination indicator: ⠱ 
  #
  # We place left and right outside of other notations
  # Boxes and circle are does as physical enclosure (shape before base)
  # Arrows are done as superposition (after base)
  # top and bottom are done as "bars" (GTM 12) (after base)

   name: default
   tag: menclose
   match: "."
   # FIX: can't find a rule that says anything about comparison operator spacing and enclosure
   variables: [AddSpaces: "parent::*[self::m:mrow] and *[1][ self::m:mo and IsInDefinition(., 'Braille', 'NemethComparisonOperators')]"]
   replace:
   - test:
      if: "contains(concat(' ', normalize-space(@notation), ' '), ' left ')"                  #avoid 'leftarrow'
      then: [t: "⠸"]
   - test:
      if: "contains(@notation,'box')"                  # box and roundedbox
      then:
      # - test:
      #       if: "$AddSpaces"
      #       then: [t: " "]
      - t: "1⠫⠼⠙"                                  # square (no rectangle in UEB)
   - test:
      if: "contains(@notation,'circle')"
      then:
      # - test:
      #    if: "$AddSpaces"
      #    then: [t: " "]
      - t: "1⠫⠿"                                  # circle (no oval in UEB)
# ??? What should happen with arrow?
#  If there is a box/circle with arrows only and an empty child,
#     then it acts like the arrow is the child
#  If there are only arrows for 'notation', then maybe rule 112 applies (superposition),
#     but the examples aren't similar. In that case, the arrow acts like 'box' and the child is the content... maybe  
# 
#  - test:
#      if: "contains(@notation,'leftarrow')"
#      then: [t: left arrow, pause: short]
#  - test:
#      if: "contains(concat(' ', normalize-space(@notation), ' '), ' rightarrow ')"
#      then: [t: right arrow, pause: short]
#  - test:
#      if: "contains(@notation,'northeastarrow')"
#      then: [t: northeast arrow, pause: short]
#  - test:
#      if: "contains(concat(' ', normalize-space(@notation), ' '), ' southeastarrow ')"
#      then: [t: southeast arrow, pause: short]
#  - test:
#      if: "contains(concat(' ', normalize-space(@notation), ' '), ' southwestarrow ')"
#      then: [t: southwest arrow, pause: short]
#  - test:
#      if: "contains(@notation,'northwestarrow')"
#      then: [t: northwest arrow, pause: short]
#  - test:
#      if: "contains(@notation,'updownarrow')"
#      then: [t: double ended vertical arrow, pause: short]
#  - test:
#      if: "contains(@notation,'leftrightarrow')"
#      then: [t: double ended horizontal arrow, pause: short]
#  - test:
#      if: "contains(@notation,'northeastsouthwestarrow')"
#      then: [t: double ended up diagonal arrow, pause: short]
#  - test:
#      if: "contains(@notation,'northwestsoutheastarrow')"
#      then: [t: double ended down diagonal arrow, pause: short]
#  - test:
#      if: ".[contains(@notation,'actuarial')]"
#      then: [t: actuarial symbol, pause: short]
#  - test:
#      if: ".[contains(@notation,'madrub')]"
#      then: [t: arabic factorial symbol, pause: short]
#  - test:
#      if: ".[contains(@notation,'longdiv') or not(@notation) or normalize-space(@notation) ='']"      # default
#      then: [t: long division symbol, pause: short]
#  - test:
#      if: ".[contains(@notation,'radical')]"
#      then: [t: square root, pause: short]

   - test:
      if: "NeedsToBeGrouped(*[1], 'UEB', false())"
      then:
      - t: "1⠣"
      - x: "*[1]"
      - t: "1⠜"
      else: [x: "*[1]"]

   # - test:
   #    if: "contains(@notation,'phasorangle')"  #FIX: what should this be???
   #    then: [t: "⠫⠪⠸⠫"]
   - test:
      if: "contains(@notation,'arrow')"    # all the arrows
      then:
      - test:
         - if: "contains(@notation,'rightarrow')" 
           then: [t: "1⠳⠕"]                                                           
         - else_if: "contains(@notation,'leftarrow')" 
           then: [t: "1⠳⠪"]                                                           
         - else_if: "contains(@notation,'uparrow')" 
           then: [t: "1⠳⠬ "]                                                           
         - else_if: "contains(@notation,'downarrow')" 
           then: [t: "1⠳⠩"]                                                           
         - else_if: "contains(@notation,'northeastarrow')" 
           then: [t: "1⠳⠎"]                                                           
         - else_if: "contains(@notation,'southeastarrow')" 
           then: [t: "1⠳⠣"]                                                           
         - else_if: "contains(@notation,'northwestarrow')" 
           then: [t: "1⠳⠱"]                                                           
         - else_if: "contains(@notation,'southwestarrow')" 
           then: [t: "1⠳⠜"]                                                           
         - else_if: "contains(@notation,'leftrightarrow')" 
           then: [t: "1⠳⠺⠗⠕"]                                                           
         - else_if: "contains(@notation,'updownarrow')" 
           then: [t: "1⠳⠺⠗⠬"]                                                           
         - else_if: "contains(@notation,'northeastsouthwestarrow')" 
           then: [t: "1⠳⠺⠗⠎"]                                                           
         - else_if: "contains(@notation,'northwestsoutheastarrow')" 
           then: [t: "1⠳⠺⠗⠣"]                                                           
   - test:
      if: "contains(@notation,'top')"
      then: [t: "⠱"]                                                                
   - test:
      if: "contains(@notation,'bottom')"
      then: [t: "⠠⠱"]                                                                
   - test:
      if: "contains(@notation,'updiagonalstrike') or contains(@notation,'downdiagonalstrike') or 
            contains(@notation,'verticalstrike') or contains(@notation,'horizontalstrike')"
      then:
         - t: "1⠈⠱"                        # cancellation
   - test:
      if:
      - "not($AddSpaces) and contains(@notation,'box') or contains(@notation,'circle') or"
      - "contains(@notation,'arrow') or contains(@notation,'phasorangle')" 
      then:
      - t: "⠻"                   # terminate shape
      # - test:
      #    if: "$AddSpaces"
      #    then: [t: " "]
   - test:
      if: "contains(concat(' ', normalize-space(@notation), ' '), ' right ')"                  #avoid 'rightarrow'
      then: [t: "⠸"]



-
   name: default
   tag: ms
   match: "."
   replace:
      - test:
         if: "string(@lquote)!=''"
         then: [x: "@lquote"]
         else: [t: "⠄⠄"]
      - x: "BrailleChars(., 'UEB')"
      - test:
         if: "string(@rquote)!=''"
         then: [x: "@rquote"]
         else: [t: "⠄⠄"]

-
   name: default
   tag: semantics
   match: "."
   replace: 
      - x: "*[1]"             #/ FIX: should prioritize @encoding="MathML-Presentation" and @encoding="application/mathml-presentation+xml"

-
   name: default-children
   tag: "*"
   match: "*"    # make sure there are children
   replace: 
   - x: "BrailleChars('unknown math m l element', 'UEB')"
   - x: "name(.)"
   - x: "*"

-
   # at this point, we know there are no children -- might be no text
   name: default-no-children
   tag: "*"
   match: "text()"
   replace: 
   - x: "BrailleChars('unknown math m l element', 'UEB')"
   - x: "name(.)"
   - x: "text()"

-
   name: default-no-text
   tag: "*"
   match: "."
   replace: 
    - x: "BrailleChars('empty unknown math m l element', 'UEB')"
    - x: "name(.)"
