Description of problem:
# tree --charset US-ASCII
tree: Invalid argument -`'.
usage: tree [-adfgilnpqrstuxACDFNS] [-H baseHREF] [-T title ] [-L level [-R]]
        [-P pattern] [-I pattern] [-o filename] [--version] [--help] [--inodes]
        [--device] [--noreport] [--nolinks] [--dirsfirst] [--charset charset]
        [<directory list>]

# tree --charset=US-ASCII
works.

Version-Release number of selected component (if applicable):
tree-1.5.0-3.2.1

How reproducible:


Steps to Reproduce:
1.
2.
3.
  
Actual results:

*** tree.c.org	Mon Aug 16 10:07:21 2004
--- tree.c	Thu Apr 13 15:07:58 2006
***************
*** 369,374 ****
--- 369,375 ----
  		}
  	      if (argv[n] != NULL)
  		charset=argv[n++];
+ 		break;
  	    }
  	  }
  	default:

Expected results:

add '--charset=charset' form in the usage message.

Additional info: