From 5c81308422ffdabce506e084e83fa883be535a1c Mon Sep 17 00:00:00 2001
From: Teddy Wing
Date: Wed, 5 Feb 2020 21:48:51 +0100
Subject: Add backward search mappings

Allow searching backward as well as forward.

Add new functions specific to each search direction.

Thanks to 'mattn' (https://www.reddit.com/user/mattn/) for describing
how to pass variadic arguments to a Vim function:
https://www.reddit.com/r/vim/comments/3761po/vimscript_question_passing_arguments_from_a/crk07lz/
---
 plugin/searchop.vim | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/plugin/searchop.vim b/plugin/searchop.vim
index ecfe2a1..a0b9835 100644
--- a/plugin/searchop.vim
+++ b/plugin/searchop.vim
@@ -1,5 +1,8 @@
-nnoremap <silent> z/ :set opfunc=Search<CR>g@
-vnoremap <silent> z/ :<C-u>call Search(visualmode(), 1)<CR>
+nnoremap <silent> z/ :set opfunc=SearchForward<CR>g@
+vnoremap <silent> z/ :<C-u>call SearchForward(visualmode(), 1)<CR>
+
+nnoremap <silent> z# :set opfunc=SearchBackward<CR>g@
+vnoremap <silent> z# :<C-u>call SearchBackward(visualmode(), 1)<CR>
 
 
 function! Search(type, ...)
@@ -16,7 +19,17 @@ function! Search(type, ...)
 	let @/ = substitute(escape(@@, '\'), '\n', '\\n', 'g')
 	call histadd('/', @/)
 
+	let @@ = user_unnamed_register
+endfunction
+
+function! SearchForward(type, ...)
+	call call('Search', [a:type] + a:000)
+
 	call feedkeys('n', 't')
+endfunction
 
-	let @@ = user_unnamed_register
+function! SearchBackward(type, ...)
+	call call('Search', [a:type] + a:000)
+
+	call feedkeys('N', 't')
 endfunction
-- 
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