change eldoc-overlay-mode into local minor mode and add on eldoc-mode-hook
treea83fc5dc579c7097fea151261cf4fdd5690362ba
-rw-r--r-- 36 .gitignore
-rw-r--r-- 35141 LICENSE
-rw-r--r-- 2757 README.md
-rw-r--r-- 4379 eldoc-overlay.el
-rw-r--r-- 27823 eldoc-overlay.png