From b9aa577c5905287c1295c162aa646b2f35ec1d93 Mon Sep 17 00:00:00 2001
From: DarkWiiPlayer <darkwiiplayer@hotmail.com>
Date: Tue, 5 Oct 2021 19:30:37 +0200
Subject: [PATCH] Add nvim availability check to annotation plugin

---
 vim/plugin/annotate.vim | 72 +++++++++++++++++++++--------------------
 1 file changed, 37 insertions(+), 35 deletions(-)

diff --git a/vim/plugin/annotate.vim b/vim/plugin/annotate.vim
index 250141f..e6a06b0 100644
--- a/vim/plugin/annotate.vim
+++ b/vim/plugin/annotate.vim
@@ -1,41 +1,43 @@
 let s:namespace = nvim_create_namespace("annotate_cursor")
 let s:callbacks = []
 
-function! Blame()
-	if exists("b:blame")
-		let l:lineblame = b:blame[line('.')-1]
-		return l:lineblame['author'] . ' @ ' . l:lineblame['time']
-	end
-endfun
-
-function! Annotate(callback)
-	call insert(s:callbacks, a:callback)
-	call s:update()
-endfun
-com! -nargs=1 Annotate call Annotate(funcref(<q-args>))
-
-function! Deannotate(callback)
-	let s:callbacks = filter(s:callbacks, { idx, value -> value != a:callback })
-	call s:update()
-endfun
-com! -nargs=1 Deannotate call Deannotate(funcref(<q-args>))
-
-function! Annotated(callback)
-	for l:Callback in s:callbacks
-		if l:Callback == a:callback
-			return 1
+if has("nvim")
+	function! Blame()
+		if exists("b:blame")
+			let l:lineblame = b:blame[line('.')-1]
+			return l:lineblame['author'] . ' @ ' . l:lineblame['time']
 		end
-	endfor
-	return 0
-endfun
+	endfun
 
-function! s:update()
-	call nvim_buf_clear_namespace(0, s:namespace, 1, -1)
-	for l:Callback in s:callbacks
-		call nvim_buf_set_virtual_text(0, s:namespace, line('.')-1, [[l:Callback(), "comment"]], {})
-	endfor
-	redraw!
-endfun
+	function! Annotate(callback)
+		call insert(s:callbacks, a:callback)
+		call s:update()
+	endfun
+	com! -nargs=1 Annotate call Annotate(funcref(<q-args>))
 
-au CursorMoved * call <SID>update()
-au CursorMovedI * call <SID>update()
+	function! Deannotate(callback)
+		let s:callbacks = filter(s:callbacks, { idx, value -> value != a:callback })
+		call s:update()
+	endfun
+	com! -nargs=1 Deannotate call Deannotate(funcref(<q-args>))
+
+	function! Annotated(callback)
+		for l:Callback in s:callbacks
+			if l:Callback == a:callback
+				return 1
+			end
+		endfor
+		return 0
+	endfun
+
+	function! s:update()
+		call nvim_buf_clear_namespace(0, s:namespace, 1, -1)
+		for l:Callback in s:callbacks
+			call nvim_buf_set_virtual_text(0, s:namespace, line('.')-1, [[l:Callback(), "comment"]], {})
+		endfor
+		redraw!
+	endfun
+
+	au CursorMoved * call <SID>update()
+	au CursorMovedI * call <SID>update()
+end