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(meg/match ~{:close-tag (drop (* "</" (cmt (* (backref :tag-name) (capture :w+)) "<function =>") ">")) :main (* :tagged -1) :open-tag (* (constant :tag) "<" (capture :w+ :tag-name) ">") :tagged (unref (replace (* :open-tag :value :close-tag) "<cfunction struct>")) :untagged (capture (some (if-not "<" 1))) :value (* (constant :value) (group (any (+ :tagged :untagged))))}
           "<p><em>Hello</em> <strong>world</strong>!</p>")

captures and tags

captures: @[:tag "p" :value {:tag "em" :value @["Hello"]}]

tagged-captures:
  tags: @[nil :tag-name nil]
  values: @[:tag "p" :value]

current frame

status: entered frame 117

peg: (* (constant :tag) "<" (capture :w+ :tag-name) ">")

text: <p><em>Hello</em> <strong>world</strong>!</p>

index: 17

frames call stack

117 (* (constant :tag) "<" (capture :w+ :tag-name) ">")
116 :open-tag
115 (* :open-tag :value :close-tag)
114 (replace (* :open-tag :value :close-tag) "<cfunction struct>")
113 (unref (replace (* :open-tag :value :close-tag) "<cfunction struct>"))
112 :tagged
111 (+ :tagged :untagged)
21 (any (+ :tagged :untagged))
20 (group (any (+ :tagged :untagged)))
18 (* (constant :value) (group (any (+ :tagged :untagged))))
17 :value
4 (* :open-tag :value :close-tag)
3 (replace (* :open-tag :value :close-tag) "<cfunction struct>")
2 (unref (replace (* :open-tag :value :close-tag) "<cfunction struct>"))
1 :tagged
0 (* :tagged -1)