Formatting
pointer arg to get is simple string, not JSON (rfc6901(3))
Pass full path to get_helper for exception message
Simplify get_helper()
Remove fossil commented functions
Exception message fixup
Use 'from', not 'to', in move and copy ops
Adapt test jig to running multiple files
Update initial comment
Support '-' for 'add' ops
Add add, move, copy tests where path has '-'
Add add, move, copy tests where path has '-'
Revise 'add' behavior to match spec: replace existing if present
New tests for toplevel scalar, add-to-existing behaviors
Remove unused patch_xml
Simplify
Fix simplification: path should be string, but empty ok
Formatting
Small refactor
Pass path down into do_op for better errors