Update readme for user variables regarding Call Of Cthulhu.

README.md

@@ -145,8 +145,11 @@ Examples:
 !get myvar //will print 5
 ```
 
-Variables can be referenced in dice pool rolling expressions, for
-example `!pool myvar` or `!pool myvar+3`.
+Variables can be referenced in dice pool and Call of Cthulhu rolling
+expressions, for example `!pool myvar` or `!pool myvar+3` or `!cthroll
+myvar`. The Call of Cthulhu advancement roll also accepts variables,
+and if a variable is used, and the roll is successful, it will update
+the variable with the new skill.
 
 ## Running the Bot
 

src/bot.rs

@@ -73,6 +73,11 @@ async fn handle_multiple_results(
     respond_to: &str,
     room: &Joined,
 ) {
+    let respond_to = format!(
+        "<a href=\"https://matrix.to/#/{}\">{}</a>",
+        respond_to, respond_to
+    );
+
     let errors: Vec<(&str, &ExecutionError)> = results
         .into_iter()
         .filter_map(|(cmd, result)| match result {

src/commands.rs

@@ -76,11 +76,13 @@ pub trait ResponseExtractor {
 impl ResponseExtractor for ExecutionResult {
     /// Error message in bolded HTML.
     fn message_html(&self, username: &str) -> String {
-        //TODO use user display name too
+        // TODO use user display name too (element seems to render this
+        // without display name)
         let username = format!(
             "<a href=\"https://matrix.to/#/{}\">{}</a>",
             username, username
         );
+
         match self {
             Ok(resp) => format!("<p>{}</p><p>{}</p>", username, resp.html).replace("\n", "<br/>"),
             Err(e) => format!("<p>{}</p><p>{}</p>", username, e.html()).replace("\n", "<br/>"),