*helpcurwin.txt*	For Vim version 9.1.	Last change: 2025 Dec 02

The helpcurwin optional package enables opening help in the current window.

1. :HelpCurwin			|helpcurwin-command|
2. helpcurwin#Open()		|helpcurwin-function|
3. <Plug>HelpCurwin;		|helpcurwin-mapping|


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1. :HelpCurwin				     *:HelpCurwin* *helpcurwin-command*

:HelpCurwin		Use the current window to display the help file,
			|help.txt| in read-only mode.  It leaves any other
			windows as-is (including when there is another
			help window(s)).

:HelpCurwin {subject}	Like ":HelpCurwin" but, additionally open the
			applicable help file at the tag {subject}.
			For example: >

			  :HelpCurwin version9.2
<
			It should otherwise behave like :help {subject}.

You may also want to save typing with a command line abbreviation,
for example: >vi

  cnoreabbrev <expr> hc getcmdtype() == ":" &&
    \ getcmdline() == 'hc' ? 'HelpCurwin' : 'hc'
<

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2. helpcurwin#Open()					*helpcurwin-function*

The underlying `:def` function may also be used, for example: >vim

	:vim9cmd helpcurwin#Open('version9.2')
<
This may be useful from other scripts where you want to bring up help on
{subject} in the current window.


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3. <Plug>HelpCurwin;					*helpcurwin-mapping*

There may be times when you want to get the help for a WORD, such as when it
is in a Vim9 script.  If you want to open it in the same window, you can map
<Plug>HelpCurwin; to keys of your choosing to enable that.  For example: >vim9

	nnoremap <Leader>hc <Plug>HelpCurwin;

Once sourced (in this instance, when <Leader>hc is typed), the applicable
help file will be opened in the current window at the tag for <cWORD> (that
is, the |WORD| under the cursor), if it exists.


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