Markdown reader: Improve superscript/subscript/inline note parsing.

We do not allow inline notes to be followed by `(` or `[`.
Otherwise, we parse inline notes before superscripts.
This fixes #8652.

Also, the sub/superscript parsers have been adjusted so that they
really exclude unescaped spaces (as they did not before, when the
spaces occurred in nested inlines). See #5878 for comment.

1 files changed, 28 insertions, 0 deletions

diff --git a/test/command/8652.md b/test/command/8652.md
new file mode 100644
index 000000000..e98f1cdec
--- /dev/null
+++ b/test/command/8652.md
@@ -0,0 +1,28 @@
+```
+% pandoc -t native
+My text^[My note]isnot^[Text]
+^D
+[ Para
+    [ Str "My"
+    , Space
+    , Str "text"
+    , Note [ Para [ Str "My" , Space , Str "note" ] ]
+    , Str "isnot"
+    , Note [ Para [ Str "Text" ] ]
+    ]
+]
+
+```
+
+```
+% pandoc -t native
+^[note1]test^[note2]
+^D
+[ Para
+    [ Note [ Para [ Str "note1" ] ]
+    , Str "test"
+    , Note [ Para [ Str "note2" ] ]
+    ]
+]
+
+```