incus: Fix completion for image alias create

When there was no remote part in the alias, remote names was included
in the fingerprint completions which was wrong.

Signed-off-by: montag451 <[email protected]>

Author: montag451

cmd/incus/image_alias.go

@@ -82,11 +82,17 @@ func (c *cmdImageAliasCreate) Command() *cobra.Command {
 		}
 
 		fingerprints, directives := c.global.cmpImageFingerprints(toComplete)
-		for i, f := range fingerprints {
-			fingerprints[i], _ = strings.CutPrefix(f, remote+":")
+		fingerprintsNoRemote := make([]string, 0, len(fingerprints))
+		for _, f := range fingerprints {
+			if strings.HasSuffix(f, ":") {
+				continue
+			}
+
+			f, _ = strings.CutPrefix(f, remote+":")
+			fingerprintsNoRemote = append(fingerprintsNoRemote, f)
 		}
 
-		return fingerprints, directives
+		return fingerprintsNoRemote, directives &^ cobra.ShellCompDirectiveNoSpace
 	}
 
 	return cmd