sagev6.0 interactive shell uses colors on prompt, even for dumb terminal
Jskud
================================================================
Run Sage from a dumb terminal (eg, from an Emacs shell with
ansi-color-for-comint-mode-off and TERM=dumb). You will see
unexpected terminal control characters around the prompt.
Platform (CPU) and Operating System
================================================================
Fails running Sage 6.0 on RHEL 5.7 on multi-core Pentium.
Fails running Sage 5.13 on Fedora release 16 (Verne) running on
Windows7 on multi-core Pentium using VirtualBox and downloaded image
Exact version of Sage (command: "version()")
================================================================
'Sage Version 5.13, Release Date: 2013-12-15'
Provide copy-paste-ready reproducible commands causing the error
================================================================
$ sage
sage: version()
==== you should see something like this ====
[[I've replaced the Esc control character with the two character ascii
representation (as Emacs would display it) "^[", and enabled
ansi-color midway through the example.]]
^[[0;34msage: ^[[0mversion()
^[[0;31m^[[0m'Sage Version 5.13, Release Date: 2013-12-15'
sage: "ansi-color-for-comint-on"
'ansi-color-for-comint-on'
sage: version()
'Sage Version 5.13, Release Date: 2013-12-15'
sage:
Other Information
================================================================
I suspect this is caused by either Sage or iPython not checking the
TERM setting. This piece of code which sets colors = 'LightBG', may
be responsible; but of course, iPython could also be responsible for
doing the checking.
[[~/sage-5.13/devel/sage-main/sage/misc/interpreter.py]]
DEFAULT_SAGE_CONFIG = Config(
PromptManager = Config(
in_template = 'sage: ',
in2_template = '....: ',
justify = False,
out_template = ''),
TerminalIPythonApp = Config(
display_banner = False,
verbose_crash = True),
TerminalInteractiveShell = Config(
ast_node_interactivity = 'all',
colors = 'LightBG' if sys.stdout.isatty() else 'NoColor',
confirm_exit = False,
separate_in = ''),
# The extension is *always* loaded for SageTerminalApp
# See the code for SageTerminalApp.init_shell
#InteractiveShellApp = Config(extensions=['sage.misc.sage_extension']),
)
[]
