This question already has an answer here:
- How to debug a mapping? 1 answer
I've mapped control-m to start the Syntastic check mode (Active/Passive)
nnoremap <c-m> :SyntasticToggleMode<Cr>
But in normal mode, when I tap the return key, it also toggles the mode. When removing the mapping line above, the problem is off. Any clue of that?