Vim key mapping failed

  question, vim

Operating environment:

Fedora 21 terminal


Initial configurationimap jk <ESC>Throughjkcarry through<ESC>, don’t know why to use, suddenly failed, pressjkPost direct output<ESC>.


imap jk <ESC>It is written in the configuration file and is invalid.
I just executed in Normal mode.:imap jk <ESC>After entering Insert mode, it can be realized, but after exiting vim, entering again becomes invalid.
It is very strange to say: (

Imap refers to mapping under the input mode. This is the time for keyboard mapping, which will be directly input into the text. Should be changed to nmap, or violence point, map try