commands: support list all commands without header

Library/Homebrew/cmd/commands.rb

@@ -1,24 +1,33 @@
 module Homebrew
   def commands
-    # Find commands in Homebrew/cmd
+    if ARGV.include? "--quiet"
-    with_directory = false
+      cmds = internal_commands + external_commands
-    cmds = (HOMEBREW_REPOSITORY/"Library/Homebrew/cmd").
+      cmds += HOMEBREW_INTERNAL_COMMAND_ALIASES.keys if ARGV.include? "--include-aliases"
-           children(with_directory).
+      puts_columns cmds.sort
-           map {|f| File.basename(f, '.rb')}
+    else
-    puts "Built-in commands"
+      # Find commands in Homebrew/cmd
-    puts_columns cmds
+      puts "Built-in commands"
+      puts_columns internal_commands
 
-    # Find commands in the path
+      # Find commands in the path
-    exts =  paths.map{ |p| Dir["#{p}/*"] }.flatten.
+      unless (exts = external_commands).empty?
-            map{    |f| File.basename f }.
+        puts
-            select{ |f| f =~ /^brew-(.+)/ }.
+        puts "External commands"
-            map{    |f| File.basename(f, '.rb')[5..-1] }.
+        puts_columns exts
-            reject{ |f| f =~ /\./ }
+      end
-
-    unless exts.empty?
-      puts
-      puts "External commands"
-      puts_columns exts
     end
   end
+
+  def internal_commands
+    with_directory = false
+    (HOMEBREW_REPOSITORY/"Library/Homebrew/cmd").
+       children(with_directory).
+       map {|f| File.basename(f, '.rb')}
+  end
+
+  def external_commands
+    paths.map{ |p| Dir["#{p}/brew-*"] }.flatten.
+      map{ |f| File.basename(f, '.rb')[5..-1] }.
+      reject{ |f| f =~ /\./ }
+  end
 end

Library/Homebrew/manpages/brew.1.md

@@ -75,9 +75,12 @@ Note that these flags should only appear after a command.
   * `command` <cmd>:
     Display the path to the file which is used when invoking `brew <cmd>`.
 
-  * `commands`:
+  * `commands [--quiet [--include-aliases]]`:
     Show a list of built-in and external commands.
 
+    If `--quiet` is passed, list only the names of commands without the header.
+    With `--include-aliases`, the aliases of internal commands will be included.
+
   * `config`:
     Show Homebrew and system configuration useful for debugging. If you file
     a bug report, you will likely be asked for this information if you do not

share/man/man1/brew.1

@@ -80,7 +80,10 @@ If \fB\-s\fR is passed, scrubs the cache, removing downloads for even the latest
 \fBcommand\fR \fIcmd\fR: Display the path to the file which is used when invoking \fBbrew <cmd>\fR\.
 .
 .IP "\(bu" 4
-\fBcommands\fR: Show a list of built\-in and external commands\.
+\fBcommands [\-\-quiet [\-\-include\-aliases]]\fR: Show a list of built\-in and external commands\.
+.
+.IP
+If \fB\-\-quiet\fR is passed, list only the names of commands without the header\. With \fB\-\-include\-aliases\fR, the aliases of internal commands will be included\.
 .
 .IP "\(bu" 4
 \fBconfig\fR: Show Homebrew and system configuration useful for debugging\. If you file a bug report, you will likely be asked for this information if you do not provide it\.