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environ docs: move variables to new sections (#5501)

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### Motivation

Section "General" in https://xon.sh/envvars.html became huge. It's time
to add new sections and just move vars to them.

Example of the most expected sections:
* cache
* subprocess
* locale

## For community
⬇️ **Please click the 👍 reaction instead of leaving a `+1` or 👍
comment**

---------

Co-authored-by: a <1@1.1>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
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Andy Kipp 2024-06-25 19:06:05 +02:00 • committed by GitHub
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xonsh/environ.py
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@ -859,28 +859,6 @@ class Xettings:
class GeneralSetting(Xettings):
"""General"""
AUTO_CONTINUE = Var.with_default(
False,
"If ``True``, automatically resume stopped jobs when they are disowned. "
"When stopped jobs are disowned and this option is ``False``, a warning "
"will print information about how to continue the stopped process.",
)
COMMANDS_CACHE_SAVE_INTERMEDIATE = Var.with_default(
False,
"If enabled, the CommandsCache is saved between runs and can reduce the startup time.",
)
ENABLE_COMMANDS_CACHE = Var(
default=True,
doc="command names in a directory are cached when enabled. "
"On some platforms it may not be accurate enough"
"(e.g. Windows, Linux save mtime in seconds). "
"Setting it to False would disable the caching mechanism "
"and may slow down the shell",
doc_default="True",
)
HOSTNAME = Var.with_default(
default=default_value(lambda env: platform.node()),
doc="Automatically set to the name of the current host.",
@ -891,18 +869,6 @@ class GeneralSetting(Xettings):
doc="Automatically set to a string that fully describes the system type on which xonsh is executing.",
type_str="str",
)
LANG = Var.with_default(
default="C.UTF-8",
doc="Fallback locale setting for systems where it matters",
type_str="str",
)
LC_COLLATE = Var.for_locale("LC_COLLATE")
LC_CTYPE = Var.for_locale("LC_CTYPE")
LC_MONETARY = Var.for_locale("LC_MONETARY")
LC_NUMERIC = Var.for_locale("LC_NUMERIC")
LC_TIME = Var.for_locale("LC_TIME")
if hasattr(locale, "LC_MESSAGES"):
LC_MESSAGES = Var.for_locale("LC_MESSAGES")
PWD = Var.with_default(
_get_cwd() or ".",
@ -939,18 +905,6 @@ class GeneralSetting(Xettings):
"filtering valid executables by. Each element must be "
"uppercase.",
)
RAISE_SUBPROC_ERROR = Var.with_default(
False,
"Whether or not to raise an error if a subprocess (captured or "
"uncaptured) returns a non-zero exit status, which indicates failure. "
"This is most useful in xonsh scripts or modules where failures "
"should cause an end to execution. This is less useful at a terminal. "
"The error that is raised is a ``subprocess.CalledProcessError``.",
)
LAST_RETURN_CODE = Var.with_default(
0,
"Integer return code of the last command. Only updated during interactive use, i.e. not during execution of scripts.",
)
SHLVL = Var(
is_valid_shlvl,
@ -960,10 +914,7 @@ class GeneralSetting(Xettings):
"Shell nesting level typed as integer, mirrors bash's $SHLVL.",
is_configurable=False,
)
XONSH_SUBPROC_CAPTURED_PRINT_STDERR = Var.with_default(
False,
"If ``True`` the stderr from captured subproc will be printed automatically.",
)
TERM = Var.no_default(
"str",
"TERM is sometimes set by the terminal emulator. This is used (when "
@ -982,47 +933,7 @@ class GeneralSetting(Xettings):
"not always happen.",
is_configurable=False,
)
XONSH_SUBPROC_OUTPUT_FORMAT = Var.with_default(
"stream_lines",
"Set output format for subprocess e.g. ``du $(ls)``. "
"By default (``stream_lines``) subprocess operator returns text output. "
"Set ``list_lines`` to have list of lines.",
)
XONSH_CAPTURE_ALWAYS = Var.with_default(
False,
"Try to capture output of commands run without explicit capturing.\n"
"If True, xonsh will capture the output of commands run directly or in ``![]``"
"to the session history.\n"
"Setting to True has the following disadvantages:\n"
"* Some interactive commands won't work properly (like when ``git`` invokes an interactive editor).\n"
" For more information see discussion at https://github.com/xonsh/xonsh/issues/3672.\n"
"* Stopping these commands with ^Z (i.e. ``SIGTSTP``)\n"
" is disabled as it causes deadlocked terminals.\n"
" ``SIGTSTP`` may still be issued and only the physical pressing\n"
" of ``Ctrl+Z`` is ignored.\n\n"
"Regardless of this value, commands run in ``$()``, ``!()`` or with an IO redirection (``>`` or ``|``) "
"will always be captured.\n"
"Setting this to True depends on ``$THREAD_SUBPROCS`` being True.",
)
THREAD_SUBPROCS = Var(
is_bool_or_none,
to_bool_or_none,
bool_or_none_to_str,
not ON_CYGWIN,
"Note: The ``$XONSH_CAPTURE_ALWAYS`` variable introduces finer control "
"and you should probably use that instead.\n\n"
"Whether or not to try to run subrocess mode in a Python thread, "
"when trying to capture its output. There are various trade-offs.\n\n"
"If True, xonsh is able capture & store the stdin, stdout, and stderr"
" of threadable subprocesses.\n"
"The disadvantages are listed in ``$XONSH_CAPTURE_ALWAYS``.\n"
"The desired effect is often up to the command, user, or use case.\n\n"
"None values are for internal use only and are used to turn off "
"threading when loading xonshrc files. This is done because Bash "
"was automatically placing new xonsh instances in the background "
"at startup when threadable subprocs were used. Please see "
"https://github.com/xonsh/xonsh/pull/3705 for more information.\n",
)
UPDATE_OS_ENVIRON = Var.with_default(
False,
"If True ``os_environ`` will always be updated "
@ -1070,33 +981,7 @@ class GeneralSetting(Xettings):
"are loaded after any files in XONSHRC.",
type_str="env_path",
)
XONSH_COMPLETER_DIRS = Var.with_default(
default_completer_dirs,
"""\
A list of paths where Xonsh searches for command completions.
Any completions defined are lazy loaded when needed.
The name of the completer file should match that of the completing command.
The file should contain a function with the signature
``xonsh_complete(ctx: CommandContext) -> Iterator[RichCompletion|str]``.
""",
type_str="env_path",
)
XONSH_APPEND_NEWLINE = Var.with_default(
xonsh_append_newline,
"Append new line when a partial line is preserved in output.",
doc_default="``$XONSH_INTERACTIVE``",
type_str="bool",
)
XONSH_CACHE_SCRIPTS = Var.with_default(
True,
"Controls whether the code for scripts run from xonsh will be cached"
" (``True``) or re-compiled each time (``False``).",
)
XONSH_CACHE_EVERYTHING = Var.with_default(
False,
"Controls whether all code (including code entered at the interactive"
" prompt) will be cached.",
)
XONSH_CONFIG_DIR = Var.with_default(
xonsh_config_dir,
"This is the location where xonsh user-level configuration information is stored.",
@ -1115,12 +1000,7 @@ The file should contain a function with the signature
"a color map. Run ``xonfig styles`` to see the available styles.",
type_str="str",
)
XONSH_DATETIME_FORMAT = Var.with_default(
"%Y-%m-%d %H:%M",
"The format that is used for ``datetime.strptime()`` in various places, "
"i.e the history timestamp option.",
type_str="str",
)
XONSH_DEBUG = Var(
always_false,
to_debug,
@ -1138,12 +1018,7 @@ The file should contain a function with the signature
doc_default="``$XDG_DATA_HOME/xonsh``",
type_str="str",
)
XONSH_CACHE_DIR = Var.with_default(
xonsh_cache_dir,
"This is the location where cache files used by xonsh are stored, such as commands-cache...",
doc_default="``$XDG_CACHE_HOME/xonsh``",
type_str="str",
)
XONSH_ENCODING = Var.with_default(
DEFAULT_ENCODING,
"This is the encoding that xonsh should use for subprocess operations.",
@ -1172,19 +1047,7 @@ The file should contain a function with the signature
"``True`` if xonsh is running as a login shell, and ``False`` otherwise.",
is_configurable=False,
)
XONSH_PROC_FREQUENCY = Var.with_default(
1e-4,
"The process frequency is the time that "
"xonsh process threads sleep for while running command pipelines. "
"The value has units of seconds [s].",
)
XONSH_SHOW_TRACEBACK = Var.with_default(
False,
"Controls if a traceback is shown if exceptions occur in the shell. "
"Set to ``True`` to always show traceback or ``False`` to always hide. "
"If undefined then the traceback is hidden but a notice is shown on how "
"to enable the full traceback.",
)
XONSH_SOURCE = Var.with_default(
"",
"When running a xonsh script, this variable contains the absolute path "
@ -1208,6 +1071,84 @@ The file should contain a function with the signature
" - ptk style name (string) - ``$XONSH_STYLE_OVERRIDES['pygments.keyword'] = '#ff0000'``\n\n"
"(The rules above are all have the same effect.)",
)
STAR_PATH = Var.no_default("env_path", pattern=re.compile(r"\w*PATH$"))
STAR_DIRS = Var.no_default("env_path", pattern=re.compile(r"\w*DIRS$"))
class SubprocessSetting(Xettings):
"""Subprocess Settings"""
RAISE_SUBPROC_ERROR = Var.with_default(
False,
"Whether or not to raise an error if a subprocess (captured or "
"uncaptured) returns a non-zero exit status, which indicates failure. "
"This is most useful in xonsh scripts or modules where failures "
"should cause an end to execution. This is less useful at a terminal. "
"The error that is raised is a ``subprocess.CalledProcessError``.",
)
LAST_RETURN_CODE = Var.with_default(
0,
"Integer return code of the last command. Only updated during interactive use, i.e. not during execution of scripts.",
)
XONSH_SUBPROC_CAPTURED_PRINT_STDERR = Var.with_default(
False,
"If ``True`` the stderr from captured subproc will be printed automatically.",
)
XONSH_SUBPROC_OUTPUT_FORMAT = Var.with_default(
"stream_lines",
"Set output format for subprocess e.g. ``du $(ls)``. "
"By default (``stream_lines``) subprocess operator returns text output. "
"Set ``list_lines`` to have list of lines.",
)
XONSH_CAPTURE_ALWAYS = Var.with_default(
False,
"Try to capture output of commands run without explicit capturing.\n"
"If True, xonsh will capture the output of commands run directly or in ``![]``"
"to the session history.\n"
"Setting to True has the following disadvantages:\n"
"* Some interactive commands won't work properly (like when ``git`` invokes an interactive editor).\n"
" For more information see discussion at https://github.com/xonsh/xonsh/issues/3672.\n"
"* Stopping these commands with ^Z (i.e. ``SIGTSTP``)\n"
" is disabled as it causes deadlocked terminals.\n"
" ``SIGTSTP`` may still be issued and only the physical pressing\n"
" of ``Ctrl+Z`` is ignored.\n\n"
"Regardless of this value, commands run in ``$()``, ``!()`` or with an IO redirection (``>`` or ``|``) "
"will always be captured.\n"
"Setting this to True depends on ``$THREAD_SUBPROCS`` being True.",
)
THREAD_SUBPROCS = Var(
is_bool_or_none,
to_bool_or_none,
bool_or_none_to_str,
not ON_CYGWIN,
"Note: The ``$XONSH_CAPTURE_ALWAYS`` variable introduces finer control "
"and you should probably use that instead.\n\n"
"Whether or not to try to run subrocess mode in a Python thread, "
"when trying to capture its output. There are various trade-offs.\n\n"
"If True, xonsh is able capture & store the stdin, stdout, and stderr"
" of threadable subprocesses.\n"
"The disadvantages are listed in ``$XONSH_CAPTURE_ALWAYS``.\n"
"The desired effect is often up to the command, user, or use case.\n\n"
"None values are for internal use only and are used to turn off "
"threading when loading xonshrc files. This is done because Bash "
"was automatically placing new xonsh instances in the background "
"at startup when threadable subprocs were used. Please see "
"https://github.com/xonsh/xonsh/pull/3705 for more information.\n",
)
XONSH_APPEND_NEWLINE = Var.with_default(
xonsh_append_newline,
"Append new line when a partial line is preserved in output.",
doc_default="``$XONSH_INTERACTIVE``",
type_str="bool",
)
XONSH_PROC_FREQUENCY = Var.with_default(
1e-4,
"The process frequency is the time that "
"xonsh process threads sleep for while running command pipelines. "
"The value has units of seconds [s].",
)
XONSH_TRACE_SUBPROC = Var(
default=False,
validate=is_bool_or_int,
@ -1215,10 +1156,6 @@ The file should contain a function with the signature
doc="Set to ``True`` or ``1`` to show arguments list of every executed subprocess command. "
"Use ``2`` to have a specification. Use ``3`` to have full specification.",
)
XONSH_TRACE_COMPLETIONS = Var.with_default(
False,
"Set to ``True`` to show completers invoked and their return values.",
)
XONSH_TRACE_SUBPROC_FUNC = Var.with_default(
None,
doc=(
@ -1233,6 +1170,18 @@ By default it just prints ``cmds`` like below.
print(f"TRACE SUBPROC: {cmds}, captured={captured}", file=sys.stderr)
""",
)
class ErrorHandlingSetting(Xettings):
"""Error Handling Settings"""
XONSH_SHOW_TRACEBACK = Var.with_default(
False,
"Controls if a traceback is shown if exceptions occur in the shell. "
"Set to ``True`` to always show traceback or ``False`` to always hide. "
"If undefined then the traceback is hidden but a notice is shown on how "
"to enable the full traceback.",
)
XONSH_TRACEBACK_LOGFILE = Var(
is_logfile_opt,
to_logfile_opt,
@ -1243,19 +1192,79 @@ By default it just prints ``cmds`` like below.
"or None / the empty string if traceback logging is not desired. "
"Logging to a file is not enabled by default.",
)
XONTRIBS_AUTOLOAD_DISABLED = Var(
default=False,
doc="""\
Controls auto-loading behaviour of xontrib packages at the startup.
* Set this to ``True`` to disable autoloading completely.
* Setting this to a list of xontrib names will block loading those specifically.
""",
doc_default="""\
Xontribs with ``xonsh.xontrib`` entrypoint will be loaded automatically by default.
""",
class JobsSetting(Xettings):
"""Jobs Settings"""
AUTO_CONTINUE = Var.with_default(
False,
"If ``True``, automatically resume stopped jobs when they are disowned. "
"When stopped jobs are disowned and this option is ``False``, a warning "
"will print information about how to continue the stopped process.",
)
class LangSetting(Xettings):
"""Language and locale settings."""
LANG = Var.with_default(
default="C.UTF-8",
doc="Fallback locale setting for systems where it matters",
type_str="str",
)
LC_COLLATE = Var.for_locale("LC_COLLATE")
LC_CTYPE = Var.for_locale("LC_CTYPE")
LC_MONETARY = Var.for_locale("LC_MONETARY")
LC_NUMERIC = Var.for_locale("LC_NUMERIC")
LC_TIME = Var.for_locale("LC_TIME")
if hasattr(locale, "LC_MESSAGES"):
LC_MESSAGES = Var.for_locale("LC_MESSAGES")
XONSH_DATETIME_FORMAT = Var.with_default(
"%Y-%m-%d %H:%M",
"The format that is used for ``datetime.strptime()`` in various places, "
"i.e the history timestamp option.",
type_str="str",
)
class CacheSetting(Xettings):
"""Cache Settings"""
XONSH_CACHE_SCRIPTS = Var.with_default(
True,
"Controls whether the code for scripts run from xonsh will be cached"
" (``True``) or re-compiled each time (``False``).",
)
XONSH_CACHE_EVERYTHING = Var.with_default(
False,
"Controls whether all code (including code entered at the interactive"
" prompt) will be cached.",
)
XONSH_CACHE_DIR = Var.with_default(
xonsh_cache_dir,
"This is the location where cache files used by xonsh are stored, such as commands-cache...",
doc_default="``$XDG_CACHE_HOME/xonsh``",
type_str="str",
)
ENABLE_COMMANDS_CACHE = Var(
default=True,
doc="command names in a directory are cached when enabled. "
"On some platforms it may not be accurate enough"
"(e.g. Windows, Linux save mtime in seconds). "
"Setting it to False would disable the caching mechanism "
"and may slow down the shell",
doc_default="True",
)
COMMANDS_CACHE_SAVE_INTERMEDIATE = Var.with_default(
False,
"If enabled, the CommandsCache is saved between runs and can reduce the startup time.",
)
STAR_PATH = Var.no_default("env_path", pattern=re.compile(r"\w*PATH$"))
STAR_DIRS = Var.no_default("env_path", pattern=re.compile(r"\w*DIRS$"))
class ChangeDirSetting(Xettings):
@ -1336,6 +1345,22 @@ class InterpreterSetting(Xettings):
)
class XontribSetting(Xettings):
"""Xontrib Settings"""
XONTRIBS_AUTOLOAD_DISABLED = Var(
default=False,
doc="""\
Controls auto-loading behaviour of xontrib packages at the startup.
* Set this to ``True`` to disable autoloading completely.
* Setting this to a list of xontrib names will block loading those specifically.
""",
doc_default="""\
Xontribs with ``xonsh.xontrib`` entrypoint will be loaded automatically by default.
""",
)
class PromptSetting(Xettings):
"""Interactive Prompt"""
@ -1851,6 +1876,21 @@ This is to reduce the noise in generated completions.""",
"``xonsh.platform.bash_command``.",
doc_default="None",
)
XONSH_COMPLETER_DIRS = Var.with_default(
default_completer_dirs,
"""\
A list of paths where Xonsh searches for command completions.
Any completions defined are lazy loaded when needed.
The name of the completer file should match that of the completing command.
The file should contain a function with the signature
``xonsh_complete(ctx: CommandContext) -> Iterator[RichCompletion|str]``.
""",
type_str="env_path",
)
XONSH_TRACE_COMPLETIONS = Var.with_default(
False,
"Set to ``True`` to show completers invoked and their return values.",
)
class PTKCompletionSetting(AutoCompletionSetting):