FEAT: NEW WORKFLOW ENGINE (#3160)

Co-authored-by: Joel <iamjoel007@gmail.com>
Co-authored-by: Yeuoly <admin@srmxy.cn>
Co-authored-by: JzoNg <jzongcode@gmail.com>
Co-authored-by: StyleZhang <jasonapring2015@outlook.com>
Co-authored-by: jyong <jyong@dify.ai>
Co-authored-by: nite-knite <nkCoding@gmail.com>
Co-authored-by: jyong <718720800@qq.com>

web/app/components/base/prompt-editor/hooks.ts

@@ -158,9 +158,9 @@ export function useBasicTypeaheadTriggerMatch(
 ): TriggerFn {
   return useCallback(
     (text: string) => {
-      const validChars = `[^${trigger}${PUNCTUATION}\\s]`
+      const validChars = `[${PUNCTUATION}\\s]`
       const TypeaheadTriggerRegex = new RegExp(
-        `([^${trigger}]|^)(`
+        '(.*)('
           + `[${trigger}]`
           + `((?:${validChars}){0,${maxLength}})`
           + ')$',