Clap: Set UnifiedHelpMessage and DeriveDisplayOrder options

docs/src/usage.txt

@@ -3,27 +3,24 @@ Danilo Bargen <mail@dbrgn.ch>
 A fast TLDR client
 
 USAGE:
-    tldr [FLAGS] [OPTIONS] [command]...
+    tldr [OPTIONS] [command]...
 
 ARGS:
     <command>...    The command to show (e.g. `tar` or `git log`)
 
-FLAGS:
-    -c, --clear-cache    Clear the local cache
-        --config-path    Show config file path
-    -h, --help           Prints help information
-    -l, --list           List all commands in the cache
-    -m, --markdown       Display the raw markdown instead of rendering it
-    -p, --pager          Use a pager to page output
-    -q, --quiet          Suppress informational messages
-        --seed-config    Create a basic config
-        --show-paths     Show file and directory paths used by tealdeer
-    -u, --update         Update the local cache
-    -v, --version        Prints the version
-
 OPTIONS:
-        --color <color>          Control whether to use color [always, auto, never]
-    -L, --language <language>    Override the language
-    -o, --os <os>                Override the operating system [linux, macos, sunos, windows]
+    -l, --list                   List all commands in the cache
     -f, --render <render>        Render a specific markdown file
-
+    -o, --os <os>                Override the operating system [linux, macos, sunos, windows]
+    -L, --language <language>    Override the language
+    -u, --update                 Update the local cache
+    -c, --clear-cache            Clear the local cache
+    -p, --pager                  Use a pager to page output
+    -q, --quiet                  Suppress informational messages
+    -m, --markdown               Display the raw markdown instead of rendering it
+        --show-paths             Show file and directory paths used by tealdeer
+        --config-path            Show config file path
+        --seed-config            Create a basic config
+        --color <color>          Control whether to use color [always, auto, never]
+    -v, --version                Prints the version
+    -h, --help                   Prints help information

src/main.rs

@@ -57,6 +57,8 @@ const PAGER_COMMAND: &str = "less -R";
 #[clap(about = "A fast TLDR client", author, version)]
 #[clap(setting = AppSettings::ArgRequiredElseHelp)]
 #[clap(setting = AppSettings::HelpRequired)]
+#[clap(setting = AppSettings::DeriveDisplayOrder)]
+#[clap(setting = AppSettings::UnifiedHelpMessage)]
 struct Args {
     /// The command to show (e.g. `tar` or `git log`)
     #[clap(min_values = 1)]