When performing autocompletion on PHP or javascript, vim opens a scratch buffer which contains info about the function being autocompleted.
Unfortunately, I increased the height of this scratch buffer by 8 lines with C-w, 8, +

Now the scratch buffer always opens really large (about 10 lines high).
Even closing and restarting vim makes no difference.
How can I reset the behaviour for this scratch buffer?


It's called "preview window" and you can read all about it in :help preview-window.

The 'previewheight' option should be what you are looking for.

  • thanks romainl, it worked exactly as you said! interesting that the setting persisted that way. vim usually flushes all settings - not saved into vimrc at shutdown. Oct 7 '15 at 11:55
  • Do you use sessions?
    – romainl
    Oct 7 '15 at 12:25
  • no, I dont know what sessions are. do you recommend them? Oct 7 '15 at 12:28

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