$ mutago --dry-run ./...
a/a.go:
	arithmetic/base: 1
	statement/return: 1

Per-mutator totals across all files:
  arithmetic/base                          1
  statement/return                         1

Total: 2 mutation(s) would be generated. No files written, no tests run.
Note: this count uses the same scope as a real run (changed lines, blacklist, duplicate edits, and --run-mutant-id). It does not apply coverage.
exit=0

$ mutago --dry-run ./b
Could not find any suitable Go source files
exit=3

$ mutago --dry-run --test-recursive ./b
Could not find any suitable Go source files
exit=3

$ mutago --dry-run ./b/b.go
Could not find any suitable Go source files
exit=3