Revert "Refactor subcommand handling (dandavison#1467)"

Fixes dandavison#1475

This reverts commit 8d14a1e.

src/main.rs

@@ -82,42 +82,42 @@ fn run_app() -> std::io::Result<i32> {
         assets,
     );
 
-    if let Err(error) = if opt.list_languages {
-        list_languages()
+    let subcommand_result = if opt.list_languages {
+        Some(list_languages())
     } else if opt.list_syntax_themes {
-        subcommands::list_syntax_themes::list_syntax_themes()
+        Some(subcommands::list_syntax_themes::list_syntax_themes())
     } else if opt.show_syntax_themes {
-        subcommands::show_syntax_themes::show_syntax_themes()
+        Some(subcommands::show_syntax_themes::show_syntax_themes())
     } else if opt.show_themes {
-        subcommands::show_themes::show_themes(opt.dark, opt.light, opt.computed.is_light_mode)
+        Some(subcommands::show_themes::show_themes(
+            opt.dark,
+            opt.light,
+            opt.computed.is_light_mode,
+        ))
     } else if opt.show_colors {
-        subcommands::show_colors::show_colors()
+        Some(subcommands::show_colors::show_colors())
     } else if opt.parse_ansi {
-        subcommands::parse_ansi::parse_ansi()
+        Some(subcommands::parse_ansi::parse_ansi())
     } else {
-        Ok(())
-    } {
-        match error.kind() {
-            ErrorKind::BrokenPipe => {}
-            _ => fatal(format!("{error}")),
+        None
+    };
+    if let Some(result) = subcommand_result {
+        if let Err(error) = result {
+            match error.kind() {
+                ErrorKind::BrokenPipe => {}
+                _ => fatal(format!("{error}")),
+            }
         }
         return Ok(0);
     };
 
     let _show_config = opt.show_config;
     let config = config::Config::from(opt);
 
-    if let Err(error) = if _show_config {
+    if _show_config {
         let stdout = io::stdout();
         let mut stdout = stdout.lock();
-        subcommands::show_config::show_config(&config, &mut stdout)
-    } else {
-        Ok(())
-    } {
-        match error.kind() {
-            ErrorKind::BrokenPipe => {}
-            _ => fatal(format!("{error}")),
-        }
+        subcommands::show_config::show_config(&config, &mut stdout)?;
         return Ok(0);
     }