cli: Open manual on `rad help`

radicle-cli/src/commands/help.rs

@@ -44,19 +44,12 @@ pub struct Options {}
 
 impl Args for Options {
     fn from_args(args: Vec<OsString>) -> anyhow::Result<(Self, Vec<OsString>)> {
-        use lexopt::prelude::*;
-
         let mut parser = lexopt::Parser::from_args(args);
 
         if let Some(arg) = parser.next()? {
-            match arg {
-                Long("help") | Short('h') => {
-                    return Err(Error::Help.into());
-                }
-                _ => return Err(anyhow::anyhow!(arg.unexpected())),
-            }
+            return Err(anyhow::anyhow!(arg.unexpected()));
         }
-        Ok((Options {}, vec![]))
+        Err(Error::HelpManual { name: "rad" }.into())
     }
 }
 

radicle-cli/src/commands/patch.rs

@@ -302,7 +302,7 @@ impl Args for Options {
                     quiet = true;
                 }
                 Long("help") => {
-                    return Err(Error::HelpManual.into());
+                    return Err(Error::HelpManual { name: "rad-patch" }.into());
                 }
                 Short('h') => {
                     return Err(Error::Help.into());

radicle-cli/src/terminal.rs

@@ -84,8 +84,8 @@ where
                     term::help(help.name, help.version, help.description, help.usage);
                     process::exit(0);
                 }
-                Some(Error::HelpManual) => {
-                    let Ok(status) = term::manual(help.name) else {
+                Some(Error::HelpManual { name }) => {
+                    let Ok(status) = term::manual(name) else {
                         io::error(format!("rad {}: failed to load manual page", help.name));
                         process::exit(1);
                     };

radicle-cli/src/terminal/args.rs

@@ -19,7 +19,7 @@ pub enum Error {
     Help,
     /// If this error is returned from argument parsing, the manual page is displayed.
     #[error("help manual invoked")]
-    HelpManual,
+    HelpManual { name: &'static str },
     /// If this error is returned from argument parsing, usage is displayed.
     #[error("usage invoked")]
     Usage,

radicle-term/src/io.rs

@@ -139,9 +139,7 @@ pub fn help(name: &str, version: &str, description: &str, usage: &str) {
 }
 
 pub fn manual(name: &str) -> io::Result<process::ExitStatus> {
-    let mut child = process::Command::new("man")
-        .arg(format!("rad-{name}"))
-        .spawn()?;
+    let mut child = process::Command::new("man").arg(name).spawn()?;
 
     child.wait()
 }