4 ms·

Oddly, C-g in Emacs isn't idempotent when it's hung or doing something slow. https://www.gnu.org/software/emacs/manual/html_node/emacs/Emergency-Escape.html ht

• o11c 2y ago
  A more subtle case is that C-d (EOF for anyone except DOS) is widely not idempotent. Depending on the exact programs involved, it changes after pressing it about 10 times.