Add autoload file for CLI

Author: rocky

CHANGES.rst

@@ -41,6 +41,7 @@ Enhancements
 * ``FileNames`` returns a sorted list (#1250).
 * ``FindRoot`` now receives several optional parameters like ``Method`` and ``MaxIterations``.
 * ``FixedPoint`` now supports the ``SameTest`` option.
+* ``mathics`` CLI now uses its own Mathics ``settings.m`` file
 * ``Prepend`` works with ``DownValues`` Issue #1251
 * ``Prime`` and ``PrimePi`` now accept a list parameter and have the ``NumericFunction`` attribute.
 * ``Read`` with ``Hold[Expression]`` now supported. (#1242)
@@ -66,10 +67,16 @@ Bug fixes
 * Functions gone over to ensure the ``Listable`` and ``NumericFunction`` properties are correct.
 
 
+Incompatible changes
+--------------------
+
+``System`$UseSansSerif`` moved from core and is sent front-ends using ``Settings`$UseSansSerif``.
+
 Internal changes
 ----------------
 
-* doctest  accepts the option `-d` to show how long it takes to parse, evaluate and compare each individual test.
+* doctest  accepts the option ``-d`` to show how long it takes to parse, evaluate and compare each individual test.
+  ``-x`` option (akin to ``pytests -x`` is a short-hand for stop on first error
 
 
 2.1.0

mathics/autoload-cli/settings.m

@@ -0,0 +1,6 @@
+(***********************************)
+(* Settings for Mathics CLI script *)
+(***********************************)
+
+System`$Notebooks::usage = "Set True if the Mathics is being used with a notebook-based front end.";
+System`$Notebooks = False;

mathics/main.py

@@ -8,14 +8,18 @@
 import subprocess
 import sys
 
+import os.path as osp
 from mathics.core.parser import MathicsFileLineFeeder, MathicsLineFeeder
 
-from mathics.core.definitions import Definitions, Symbol
+from mathics.core.definitions import autoload_files, Definitions, Symbol
 from mathics.core.expression import strip_context
 from mathics.core.evaluation import Evaluation, Output
 from mathics import version_string, license_string, __version__
 from mathics import settings
 
+def get_srcdir():
+    filename = osp.normcase(osp.dirname(osp.abspath(__file__)))
+    return osp.realpath(filename)
 
 class TerminalShell(MathicsLineFeeder):
     def __init__(self, definitions, colors, want_readline, want_completion):
@@ -82,6 +86,7 @@ def __init__(self, definitions, colors, want_readline, want_completion):
 
         self.incolors, self.outcolors = term_colors
         self.definitions = definitions
+        autoload_files(definitions, get_srcdir(), "autoload-cli")
 
     def get_last_line_number(self):
         return self.definitions.get_line_no()

setup.py

@@ -144,6 +144,7 @@ def subdirs(root, file="*.*", depth=10):
             "doc/xml/data",
             "doc/tex/data",
             "autoload/*.m",
+            "autoload-cli/*.m",
             "autoload/formats/*/Import.m",
             "autoload/formats/*/Export.m",
             "packages/*/*.m",