fix(help): Hide subcommands in flattened usage

Author: epage

clap_builder/src/output/usage.rs

@@ -113,7 +113,11 @@ impl<'cmd> Usage<'cmd> {
             }
             let mut cmd = self.cmd.clone();
             cmd.build();
-            for (i, sub) in cmd.get_subcommands().enumerate() {
+            for (i, sub) in cmd
+                .get_subcommands()
+                .filter(|c| !c.is_hide_set())
+                .enumerate()
+            {
                 if i != 0 {
                     styled.trim_end();
                     let _ = write!(styled, "{}", USAGE_SEP);

tests/builder/help.rs

@@ -3314,7 +3314,6 @@ fn flatten_single_hidden_command() {
 parent command
 
 Usage: parent [OPTIONS]
-       parent child1 [OPTIONS]
        parent help [COMMAND]...
 
 Options:
@@ -3346,7 +3345,6 @@ parent command
 Usage: parent [OPTIONS]
        parent child1 [OPTIONS]
        parent child2 [OPTIONS]
-       parent child3 [OPTIONS]
        parent help [COMMAND]...
 
 Options:
@@ -3406,7 +3404,6 @@ Usage: parent [OPTIONS]
        parent child1 grandchild3 [OPTIONS]
        parent child1 help [COMMAND]
        parent child2 [OPTIONS]
-       parent child3 [OPTIONS] [COMMAND]
        parent help [COMMAND]...
 
 Options: