fix(uudoc): Correctly parse version string for documentation (#8600)

.github/workflows/documentation.yml

@@ -74,12 +74,10 @@ jobs:
             exit 1
           fi
 
-          if ! grep -q "v(uutils coreutils) $VERSION" docs/src/utils/ls.md; then
-            echo "Version '$VERSION' not found in docs/src/utils/ls.md"
-            echo "Found version info:"
-            grep "v(uutils coreutils)" docs/src/utils/ls.md || echo "No version info found"
+          if ! grep -q "<div class=\"version\">v$VERSION</div>" docs/src/utils/ls.md; then
+            echo "Expected '<div class=\"version\">v$VERSION</div>' not found in docs/src/utils/ls.md"
             echo "Full version section:"
-            grep -A2 -B2 "version" docs/src/utils/ls.md || echo "No version section found"
+            grep -C 2 "version" docs/src/utils/ls.md || echo "No version section found"
             exit 1
           fi
 

src/bin/uudoc.rs

@@ -511,14 +511,18 @@ impl MDWriter<'_, '_> {
 
     /// # Errors
     /// Returns an error if the writer fails.
-    /// # Panics
-    /// Panics if the version is not found.
     fn version(&mut self) -> io::Result<()> {
-        writeln!(
-            self.w,
-            "<div class=\"version\">v{}</div>",
-            self.command.render_version().split_once(' ').unwrap().1
-        )
+        let full_version_string = self.command.render_version();
+
+        // clap renders the version as "<name> (uutils coreutils) <version>",
+        // e.g. "b2sum (uutils coreutils) 0.3.0". Keep only the version number,
+        // which is the last whitespace-separated token.
+        let version_only = full_version_string
+            .split_whitespace()
+            .last()
+            .unwrap_or(&full_version_string);
+
+        writeln!(self.w, "<div class=\"version\">v{version_only}</div>")
     }
 
     /// # Errors