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RichTextEditor: Ensure prevLine is defined before subsequently calling .split on it #55

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RichTextEditor: Ensure prevLine is defined before subsequently calling .split on it #55

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2 changes: 1 addition & 1 deletion controls/richtexteditor/src/markdown-parser/plugin/lists.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -265,7 +265,7 @@ export class MDLists {
let start: number = textArea.selectionStart;
let end: number = textArea.selectionEnd;
let parents: { [key: string]: string | number }[] = this.selection.getSelectedParentPoints(textArea);
let prevLine: string = this.selection.getLine(textArea, (parents[0].line as number) - 1);
let prevLine: string = this.selection.getLine(textArea, (parents[0].line as number) - 1) || '';
let listFormat: number = this.olListType();
let regex: RegExp = this.getListRegex();
let prevLineSplit: string[] = prevLine.split('. ');
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