1 files changed, 27 insertions, 0 deletions

diff --git a/src/client/ui.rs b/src/client/ui.rs
index 036c36a..6fc2f62 100644
--- a/src/client/ui.rs
+++ b/src/client/ui.rs
@@ -102,6 +102,33 @@ pub fn help_lines() -> Vec<String> {
     lines
 }
 
+/// Wrap a completion list to `width` columns, one space between names.
+pub fn completion_lines(commands: &[&str], width: usize) -> Vec<String> {
+    let mut lines = vec!["Possible completions:".to_string()];
+    let mut current = String::new();
+
+    for command in commands {
+        let needed = if current.is_empty() {
+            command.len()
+        } else {
+            current.len() + 1 + command.len()
+        };
+        if !current.is_empty() && needed > width {
+            lines.push(current.clone());
+            current.clear();
+        }
+        if !current.is_empty() {
+            current.push(' ');
+        }
+        current.push_str(command);
+    }
+
+    if !current.is_empty() {
+        lines.push(current);
+    }
+    lines
+}
+
 /// Add a command to the history, skipping blanks and consecutive duplicates.
 pub fn record_history(history: &mut Vec<String>, line: &str) {
     let line = line.trim();