The rst tree-sitter grammar (added in the 89-grammar bump) contains a
valid_schemas[] array listing URI schemes (http, https, ftp, mailto,
telnet, ssh) in vendored/grammars/rst/tree_sitter_rst/chars.c. The
'telnet' string ends up in the binary's string table and tripped the
dangerous-command detector, blocking smoke on every platform.
Add an allowlist mechanism for known-benign matches with a comment
pointing at the source file, so future false positives can be
documented the same way.
Martin Vogel
72c5bdba89