edebug-test-coverageedebug-test-coverage is a variable defined in `
edebug.el'. Its value is
nilDocumentation: If non-nil, Edebug tests coverage of all expressions debugged. This is done by comparing the result of each expression with the previous result. Coverage is considered OK if two different results are found. Use `edebug-display-freq-count' to display the frequency count and coverage information for a definition. You can customize this variable.