added dynamic resizing of description for flag & the like

src/cligen/template/cmd_help.ecr

@@ -3,13 +3,15 @@ Command: <%= @name %>
 Description: <%= @description %>
 <%- end -%>
 
+<%- len = @flags.map{|f| f.short.nil? ? f.long.size : "#{f.short},#{f.long}".size}.max + 5 -%>
+
 Flags:
 ---------------------------------------------------------------
 <%- @flags.each do |flag| -%>
   <%- unless flag.short.nil? -%>
-    <%= "%-30s %s" % ["#{flag.short.not_nil!.strip},#{flag.long.strip}", flag.description.strip] %>
+    <%= "%-#{len}s %s" % ["#{flag.short.not_nil!.strip},#{flag.long.strip}", flag.description.strip] %>
   <%- else -%>
-    <%= "%-30s %s" % [flag.long.strip, flag.description.strip] %>
+    <%= "%-#{len}s %s" % [flag.long.strip, flag.description.strip] %>
   <%- end -%>
 
 <%- end -%>
@@ -17,7 +19,7 @@ Flags:
 Other Commands
 ---------------------------------------------------------------
   <%- @commands.each do |command| -%>
-    <%= "%-30s %s" % [ command.name, command.description ] %>
+    <%= "%-#{len}s %s" % [ command.name, command.description ] %>
   <%- end -%>
 
 <%- end -%>
@@ -25,7 +27,7 @@ Other Commands
 SubCommands of <%= @name %>:
 ---------------------------------------------------------------
   <%- subcommands.each do |cmd| -%>
-    <%= "%-30s %s" % [cmd.name, cmd.description] %>
+    <%= "%-#{len}s %s" % [cmd.name, cmd.description] %>
   <%- end -%>
 
   <%- cmds = subcommands.select{|c| ! c.examples.nil? } -%>