id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	notify_on_close	platform	project
238	cannot intersect built-in selector with atom names	Elaine Meng	Tom Goddard	"commands like ""show helix & @n,ca,c,o"" or ""show @n,ca,c,o & protein"" give a traceback:

Traceback (most recent call last):
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/cmd_line/gui.py"", line 119, in on_enter
cmd = Command(session, cmd_text, final=True)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/cli.py"", line 1759, in __init__
self.parse_text(text, final=final, _used_aliases=_used_aliases)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/cli.py"", line 2168, in parse_text
prev_annos = self._process_positional_arguments()
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/cli.py"", line 2034, in _process_positional_arguments
value, text = self._parse_arg(anno, text, session, False)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/cli.py"", line 1884, in _parse_arg
value, replacement, rest = annotation.parse(text, session)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/cli.py"", line 1039, in parse
return anno.parse(text, session)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/cli.py"", line 901, in parse
objects = aspec.evaluate(session)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/atomspec.py"", line 639, in evaluate
results = Objects.intersect(left_results, right_results)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/objects.py"", line 99, in intersect
atoms = (right.atoms() & left.atoms()))
TypeError: 'Atoms' object is not callable
"	defect	closed	blocker		Command Line		fixed		Conrad Huang				all	ChimeraX