Extract contains_word function

src/main.rs

@@ -4,6 +4,7 @@ mod irc_handler;
 mod irc_message;
 mod message_log;
 mod ui_message;
+mod util;
 
 use color_eyre::eyre::Result;
 use iced::{Application, Settings};

src/message_log.rs

@@ -1,4 +1,7 @@
-use crate::irc_message::{IrcMessage, MessageDetail};
+use crate::{
+    irc_message::{IrcMessage, MessageDetail},
+    util,
+};
 
 use chrono::{DateTime, Local};
 use iced::{
@@ -7,7 +10,6 @@ use iced::{
     Background, Color, Length,
 };
 use irc::proto::BatchSubCommand;
-use regex::Regex;
 use std::collections::{HashMap, HashSet};
 
 pub struct Channel {
@@ -321,9 +323,7 @@ impl<'a> MessageLog {
         }
 
         if !is_active {
-            let highlight_regex =
+            if util::contains_word(current_nickname, message) {
-                Regex::new(&format!(r"\b{}\b", regex::escape(current_nickname))).unwrap();
-            if highlight_regex.is_match(message) {
                 channel.unread_highlights += 1;
             } else {
                 channel.unread_messages += 1;

src/util.rs

@@ -0,0 +1,7 @@
+use regex::Regex;
+
+pub fn contains_word(needle: &str, haystack: &str) -> bool {
+    let pattern = format!(r"\b{}\b", regex::escape(needle));
+    let regex = Regex::new(&pattern).unwrap();
+    regex.is_match(haystack)
+}