Fix instance highlighting when selecting multiple lines (fix #1090)

CHANGELOG.md

@@ -9,6 +9,10 @@ Change Log
 
 - [trivial] Tweak some UI styles.
 
+### Fixes
+
+- Fix an issue in the instant highlighting that the highlight shape spread wrongly when the selected text included line breaks.
+
 
 
 3.9.2 (425)

CotEditor/Sources/EditorTextView.swift

@@ -1604,7 +1604,7 @@ final class EditorTextView: NSTextView, Themable, CurrentLineHighlighting, URLDe
             self.insertionLocations.isEmpty,
             self.selectedRanges.count == 1,
             !self.selectedRange.isEmpty,
-            (try! NSRegularExpression(pattern: "^\\b\\w.*\\w\\b$"))
+            (try! NSRegularExpression(pattern: "\\A\\b\\w.*\\w\\b\\z"))
                 .firstMatch(in: self.string, options: [.withTransparentBounds], range: self.selectedRange) != nil
             else { return }