CODEWITHSUNDEEP
vimplugins
syntagma
syntagma

Reputation: 24324

Debugging keypresses in Vim

For some reason my Vim has gotten pretty slow when I try to switch from Insert mode to Normal mode - sometimes I have to wait 2 seconds to make a switch, sometimes I have to press twice. It may be related to plugins (I have many of them installed at the moment) or to my own mappings.

How can I debug keypresses in Vim (for example, print to the log what actually happens when I press a certain key)?

Upvotes: 1

Views: 367

Answers (1)

Ingo Karkat
Ingo Karkat

Reputation: 172590

You can capture a full log of a Vim session with vim -V20vimlog. After quitting Vim, examine the vimlog log file for suspect commands.

However, for this timing issue, there's probably an easier approach: The delay can only be caused by either a mapping on the <Esc> key (especially in the terminal you have to deal with the ambiguity with escape codes, which also start with Escape), or by code run on InsertLeave. So, check whether something's mapped:

:verbose imap <Esc>

and list (and then disable one by one) the autocmds:

:verbose autocmd InsertLeave

Upvotes: 2

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