18.2.14.1 Checking Whether to Stop

Whenever Edebug is entered, it needs to save and restore certain data before even deciding whether to make trace information or stop the program.

• max-lisp-eval-depth and max-specpdl-size are both increased to reduce Edebug's impact on the stack. You could, however, still run out of stack space when using Edebug.
• The state of keyboard macro execution is saved and restored. While Edebug is active, executing-kbd-macro is bound to nil unless edebug-continue-kbd-macro is non-nil.