Typst Writer: Check XID_Continue in identifiers

Add unicode-data dependency for isXIDContinue for this to match the
rust implementation.
Also apply hlint suggestions for redundant $, literal pattern and
moving brackets to avoid $.

1 files changed, 7 insertions, 0 deletions

diff --git a/test/command/10816.md b/test/command/10816.md
new file mode 100644
index 000000000..be7bc3421
--- /dev/null
+++ b/test/command/10816.md
@@ -0,0 +1,7 @@
+```
+% pandoc -f markdown -t typst
+# Test①
+^D
+= Test①
+#label("test①")
+```