From dbad8a48cbfbb0d9a5461220ab76bfff18350448 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jakob=20Ko=C5=A1ir?= <kosir.jakob@gmail.com>
Date: Wed, 1 Sep 2021 20:49:22 +0200
Subject: [PATCH] Allow triggering suggestions without prefix space

---
 packages/suggestion/src/findSuggestionMatch.ts | 4 +++-
 packages/suggestion/src/suggestion.ts          | 3 +++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/packages/suggestion/src/findSuggestionMatch.ts b/packages/suggestion/src/findSuggestionMatch.ts
index f824c24aec0..fcbc20878f2 100644
--- a/packages/suggestion/src/findSuggestionMatch.ts
+++ b/packages/suggestion/src/findSuggestionMatch.ts
@@ -4,6 +4,7 @@ import { ResolvedPos } from 'prosemirror-model'
 export interface Trigger {
   char: string,
   allowSpaces: boolean,
+  prefixSpace: boolean,
   startOfLine: boolean,
   $position: ResolvedPos,
 }
@@ -18,6 +19,7 @@ export function findSuggestionMatch(config: Trigger): SuggestionMatch {
   const {
     char,
     allowSpaces,
+    prefixSpace,
     startOfLine,
     $position,
   } = config
@@ -49,7 +51,7 @@ export function findSuggestionMatch(config: Trigger): SuggestionMatch {
   // or the line beginning
   const matchPrefix = match.input.slice(Math.max(0, match.index - 1), match.index)
 
-  if (!/^[\s\0]?$/.test(matchPrefix)) {
+  if (prefixSpace && !/^[\s\0]?$/.test(matchPrefix)) {
     return null
   }
 
diff --git a/packages/suggestion/src/suggestion.ts b/packages/suggestion/src/suggestion.ts
index 819ca945acd..154b456c230 100644
--- a/packages/suggestion/src/suggestion.ts
+++ b/packages/suggestion/src/suggestion.ts
@@ -9,6 +9,7 @@ export interface SuggestionOptions {
   char?: string,
   allowSpaces?: boolean,
   startOfLine?: boolean,
+  prefixSpace?: boolean,
   decorationTag?: string,
   decorationClass?: string,
   command?: (props: {
@@ -53,6 +54,7 @@ export function Suggestion({
   editor,
   char = '@',
   allowSpaces = false,
+  prefixSpace = true,
   startOfLine = false,
   decorationTag = 'span',
   decorationClass = 'suggestion',
@@ -173,6 +175,7 @@ export function Suggestion({
           const match = findSuggestionMatch({
             char,
             allowSpaces,
+            prefixSpace,
             startOfLine,
             $position: selection.$from,
           })