Open A Tag In A Split Window
Using tags and
ctrl-] is a quick way to jump from the use of a keyword to
the declaration or definition whether in the same file or another file.
Sometimes what you really want is that tag definition opened up in a
(horizontal) split window. That way you can see the definition without
losing context. This can be accomplished with
The Vim help file gives the following definition of this command:
Use identifier under cursor as a tag and jump to it in the new upper window.
:h CTRL-W_] for more details.
h/t Dorian KarterTweet