From 42d3ee8fc9882a9fb9f87e696cebd0e6146d2e62 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Philipp=20K=C3=BChn?=
 <philippkuehn@MacBook-Pro-von-Philipp.local>
Date: Thu, 13 Jan 2022 13:57:33 +0100
Subject: [PATCH] fix: support all characters for suggestion char, fix #2385

---
 packages/core/src/index.ts                     | 1 +
 packages/core/src/utilities/escapeForRegEx.ts  | 4 ++++
 packages/suggestion/src/findSuggestionMatch.ts | 8 ++------
 3 files changed, 7 insertions(+), 6 deletions(-)
 create mode 100644 packages/core/src/utilities/escapeForRegEx.ts

diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index a9028dfe..9ab8174f 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -21,6 +21,7 @@ export * from './pasteRules/markPasteRule'
 export * from './pasteRules/textPasteRule'
 
 export * from './utilities/callOrReturn'
+export * from './utilities/escapeForRegEx'
 export * from './utilities/mergeAttributes'
 
 export * from './helpers/combineTransactionSteps'
diff --git a/packages/core/src/utilities/escapeForRegEx.ts b/packages/core/src/utilities/escapeForRegEx.ts
new file mode 100644
index 00000000..e06bd41b
--- /dev/null
+++ b/packages/core/src/utilities/escapeForRegEx.ts
@@ -0,0 +1,4 @@
+// source: https://stackoverflow.com/a/6969486
+export function escapeForRegEx(string: string): string {
+  return string.replace(/[-/\\^$*+?.()|[\]{}]/g, '\\$&')
+}
diff --git a/packages/suggestion/src/findSuggestionMatch.ts b/packages/suggestion/src/findSuggestionMatch.ts
index fe7be2b9..17dd3894 100644
--- a/packages/suggestion/src/findSuggestionMatch.ts
+++ b/packages/suggestion/src/findSuggestionMatch.ts
@@ -1,4 +1,4 @@
-import { Range } from '@tiptap/core'
+import { Range, escapeForRegEx } from '@tiptap/core'
 import { ResolvedPos } from 'prosemirror-model'
 
 export interface Trigger {
@@ -24,11 +24,7 @@ export function findSuggestionMatch(config: Trigger): SuggestionMatch {
     $position,
   } = config
 
-  // Matching expressions used for later
-  const escapedChar = char
-    .split('')
-    .map(c => `\\${c}`)
-    .join('')
+  const escapedChar = escapeForRegEx(char)
   const suffix = new RegExp(`\\s${escapedChar}$`)
   const prefix = startOfLine ? '^' : ''
   const regexp = allowSpaces