Move icons to separately defined consts

This is just to help clean up the size of the function.

Author: ehuss

mdbook-spec/src/admonitions.rs

@@ -11,6 +11,13 @@ static ADMONITION_RE: LazyLock<Regex> = LazyLock::new(|| {
     Regex::new(r"(?m)^ *> \[!(?<admon>[^]]+)\]\n(?<blockquote>(?: *>.*\n)+)").unwrap()
 });
 
+
+// This icon is from GitHub, MIT License, see https://github.com/primer/octicons
+const ICON_NOTE: &str = r#"<path d="M0 8a8 8 0 1 1 16 0A8 8 0 0 1 0 8Zm8-6.5a6.5 6.5 0 1 0 0 13 6.5 6.5 0 0 0 0-13ZM6.5 7.75A.75.75 0 0 1 7.25 7h1a.75.75 0 0 1 .75.75v2.75h.25a.75.75 0 0 1 0 1.5h-2a.75.75 0 0 1 0-1.5h.25v-2h-.25a.75.75 0 0 1-.75-.75ZM8 6a1 1 0 1 1 0-2 1 1 0 0 1 0 2Z"></path>"#;
+
+// This icon is from GitHub, MIT License, see https://github.com/primer/octicons
+const ICON_WARNING: &str = r#"<path d="M6.457 1.047c.659-1.234 2.427-1.234 3.086 0l6.082 11.378A1.75 1.75 0 0 1 14.082 15H1.918a1.75 1.75 0 0 1-1.543-2.575Zm1.763.707a.25.25 0 0 0-.44 0L1.698 13.132a.25.25 0 0 0 .22.368h12.164a.25.25 0 0 0 .22-.368Zm.53 3.996v2.5a.75.75 0 0 1-1.5 0v-2.5a.75.75 0 0 1 1.5 0ZM9 11a1 1 0 1 1-2 0 1 1 0 0 1 2 0Z"></path>"#;
+
 /// Converts blockquotes with special headers into admonitions.
 ///
 /// The blockquote should look something like:
@@ -43,10 +50,9 @@ pub fn admonitions(chapter: &Chapter, diag: &mut Diagnostics) -> String {
                     {space}</div>\n");
             }
 
-            // These icons are from GitHub, MIT License, see https://github.com/primer/octicons
             let svg = match lower.as_str() {
-                "note" => "<path d=\"M0 8a8 8 0 1 1 16 0A8 8 0 0 1 0 8Zm8-6.5a6.5 6.5 0 1 0 0 13 6.5 6.5 0 0 0 0-13ZM6.5 7.75A.75.75 0 0 1 7.25 7h1a.75.75 0 0 1 .75.75v2.75h.25a.75.75 0 0 1 0 1.5h-2a.75.75 0 0 1 0-1.5h.25v-2h-.25a.75.75 0 0 1-.75-.75ZM8 6a1 1 0 1 1 0-2 1 1 0 0 1 0 2Z\"></path>",
-                "warning" => "<path d=\"M6.457 1.047c.659-1.234 2.427-1.234 3.086 0l6.082 11.378A1.75 1.75 0 0 1 14.082 15H1.918a1.75 1.75 0 0 1-1.543-2.575Zm1.763.707a.25.25 0 0 0-.44 0L1.698 13.132a.25.25 0 0 0 .22.368h12.164a.25.25 0 0 0 .22-.368Zm.53 3.996v2.5a.75.75 0 0 1-1.5 0v-2.5a.75.75 0 0 1 1.5 0ZM9 11a1 1 0 1 1-2 0 1 1 0 0 1 2 0Z\"></path>",
+                "note" => ICON_NOTE,
+                "warning" => ICON_WARNING,
                 _ => {
                     warn_or_err!(
                         diag,