Version 1.1 of package All has just been released in GNU ELPA. You can now find it in M-x list-packages RET.
All describes itself as: ====================================== Edit all lines matching a given regexp ====================================== More at https://elpa.gnu.org/packages/all.html ## Summary: Just like occur, except that changes in the *All* buffer are propagated to the original buffer. You can no longer use mouse-2 to find a match in the original file, since the default definition of mouse is too useful. However, `C-c C-c' still works. Line numbers are not listed in the *All* buffer. Ok, it is _not_ just like occur. Some limitations: ## Recent NEWS: [Not provided 🙁]