implement item-wise history deletion

app/api.imba

@@ -257,7 +257,9 @@ export default new class api
 		catch e
 			err "updating bang history", e
 
-	def delete_bang_history_item text
+	def delete_bang_history_item
+		let text = sorted_bang_history[state.bang_selection_index]
+		return unless text
 		let i = bang.history.indexOf(text)
 		return unless i > -1
 		bang.history.splice(i, 1)

app/components/app-bang.imba

@@ -23,6 +23,15 @@ tag app-bang
 					<.tip-hotkey> "Return"
 					<.tip-content> "Search"
 
+		if state.bang_selection_index > -1
+			result.push <>
+				<.tip
+					@click=api.delete_bang_history_item
+					@hotkey('shift+backspace').capture.if(!state.loading)=api.delete_bang_history_item
+				>
+					<.tip-hotkey> "Shift + Backspace"
+					<.tip-content> "Delete History Item"
+
 		result.push <>
 			<.tip.ellipsis
 				@click=api.handle_add_link

app/db.imba

@@ -31,7 +31,7 @@ db.version(3).stores({
 			link.url = api.parse_url(link.url).href
 
 db.version(4).stores({
-	links: "++id,display_name,name,is_bang,is_pinned,url,frequency,icon"
+	links: "++id,display_name,name,is_bang,is_pinned,url,frequency,history,icon"
 }).upgrade! do |trans|
 	p "upgrading to fuzzyhome db version 4"
 	trans.links.toCollection!.modify! do |link|