Rewrite

src/highlight.zsh

@@ -0,0 +1,22 @@
+
+#--------------#
+# Highlighting #
+#--------------#
+
+# If there was a highlight, remove it
+_zsh_autosuggest_highlight_reset() {
+	if [ -n "$_ZSH_AUTOSUGGEST_LAST_HIGHLIGHT" ]; then
+		region_highlight=("${(@)region_highlight:#$_ZSH_AUTOSUGGEST_LAST_HIGHLIGHT}")
+		unset _ZSH_AUTOSUGGEST_LAST_HIGHLIGHT
+	fi
+}
+
+# If there's a suggestion, highlight it
+_zsh_autosuggest_highlight_apply() {
+	if [ $#POSTDISPLAY -gt 0 ]; then
+		_ZSH_AUTOSUGGEST_LAST_HIGHLIGHT="$#BUFFER $(($#BUFFER + $#POSTDISPLAY)) $ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE"
+		region_highlight+=($_ZSH_AUTOSUGGEST_LAST_HIGHLIGHT)
+	else
+		unset _ZSH_AUTOSUGGEST_LAST_HIGHLIGHT
+	fi
+}