feat: allow triggering suggestions without prefix space (#1826, fix #1384)

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
   }
 

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,
           })