command-line: tahoe ls's way of saying "No such file or directory" leaves something to be desired

[zooko]

$ bin/tahoe ls 
--dir-cap=URI:DIR2-RO:pgj2oefhipe2uzulz7kyvyfcbe:7xoalidet7oignxsnhra77ez7qxh6ro5humhumncabv4cghdkc2q
http://127.0.0.1:8124/uri/URI%3ADIR2-RO%3Apgj2oefhipe2uzulz7kyvyfcbe%3A7xoalidet7oignxsnhra77ez7qxh6ro5humhumncabv4cghdkc2q/?t=json
Traceback (most recent call last):
   File "/disk1.1/usr/home/ben/darcs-work/tahoe/support/bin/tahoe", line 
8, in <module>
     load_entry_point('allmydata-tahoe==1.0.0-r2514', 'console_scripts', 
'tahoe')()
   File 
"/disk1.1/usr/home/ben/darcs-work/tahoe/src/allmydata/scripts/runner.py", 
line 77, in run
     rc = runner(sys.argv[1:])
   File 
"/disk1.1/usr/home/ben/darcs-work/tahoe/src/allmydata/scripts/runner.py", 
line 66, in runner
     rc = cli.dispatch[command](so, stdout, stderr)
   File 
"/disk1.1/usr/home/ben/darcs-work/tahoe/src/allmydata/scripts/cli.py", 
line 145, in list
     stdout, stderr)
   File 
"/disk1.1/usr/home/ben/darcs-work/tahoe/src/allmydata/scripts/tahoe_ls.py", 
line 15, in list
     parsed = simplejson.loads(data)
   File 
"/disk1.1/usr/home/ben/darcs-work/tahoe/support/lib/python2.5/site-packages/simplejson-1.7.3-py2.5-freebsd-6.3-STABLE-i386.egg/simplejson/__init__.py", 
line 262, in loads
     return _default_decoder.decode(s)
   File 
"/disk1.1/usr/home/ben/darcs-work/tahoe/support/lib/python2.5/site-packages/simplejson-1.7.3-py2.5-freebsd-6.3-STABLE-i386.egg/simplejson/decoder.py", 
line 251, in decode
     obj, end = self.raw_decode(s, idx=_w(s, 0).end())
   File 
"/disk1.1/usr/home/ben/darcs-work/tahoe/support/lib/python2.5/site-packages/simplejson-1.7.3-py2.5-freebsd-6.3-STABLE-i386.egg/simplejson/decoder.py", 
line 270, in raw_decode
     raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded

When what it should have said was

$ bin/tahoe ls 
--dir-cap=URI:DIR2-RO:pgj2oefhipe2uzulz7kyvyfcbe:7xoalidet7oignxsnhra77ez7qxh6ro5humhumncabv4cghdkc2q
http://127.0.0.1:8124/uri/URI%3ADIR2-RO%3Apgj2oefhipe2uzulz7kyvyfcbe%3A7xoalidet7oignxsnhra77ez7qxh6ro5humhumncabv4cghdkc2q/?t=json
tahoe ls: http://127.0.0.1:8124/uri/URI%3ADIR2-RO%3Apgj2oefhipe2uzulz7kyvyfcbe%3A7xoalidet7oignxsnhra77ez7qxh6ro5humhumncabv4cghdkc2q: No such file or directory

[warner]

Let's start by changing the internal exception classes, to make a new NoSharesError as a narrower subset of NotEnoughSharesError. NoSharesError would be cause to show "no such file or directory", whereas NotEnoughSharesError (which would imply more than zero) is a more serious problem, closer to an IOError of some sort.

[davidsarah]

This seems to be already fixed.