Yegappan Lakshmanan wrote:
> The BufWinEnter autocmd is not invoked when splitting a window.
> According to the help for the BufWinEnter autocmd, this autocmd
> is invoked when a buffer is displayed in a window.
>
> For example, use the following autocmd:
>
> au BufWinEnter * echomsg "Entering buffer " . expand("<afile>")
>
> With the above autocmd, if you execute the following commands:
>
> :e <somefile>
> :split
>
> The BufWinEnter autocmd is not invoked for the new window.
The BufWinEnter event is normally used to set window-local options for
the file being edited. When you split a window you get all the option
settings from the existing window. Thus it's really a split, you don't
get another buffer in a window.
> But if you use the following commands, then the BufWinEnter autocmd
> is invoked:
>
> :e <somefile>
> :split <somefile>
Vim doesn't check if the filename argument of :split happens to be the
same as what is already being edited, thus it assumes it is another
file and BufWinEnter is triggered. The file is reloaded too.
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