Commit d43655541 made splitHashlineInputs silently drop sections whose
body has no operations, so '@<path>\n' alone now yields zero sections
and trips the 'exactly one hashline section' guard before reaching the
no-op or local-URL checks the tests intended to exercise.
- 'returns no-op error for unchanged content' now uses '= 1<hash>..1<hash>'
with the existing line as payload (true no-op via formatLineHash).
- 'returns a handled error when the source path is a local URL' appends
'+ EOF\n' so the section is emitted and resolveToCwd surfaces the
internal-scheme rejection.
can1357
0f1df8b2e2